fix 32-bits mode.

Large File support for Mac OS-X in 32-bits mode
Fixed potential undefined behavior
Changed makefile for 32-bits mode

11 files changed, 174 insertions, 213 deletions

diff --git a/.travis.yml b/.travis.yml
index f4facad..48ccbc6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ matrix:
 
     - os: linux
       sudo: false
-      env: Ubu=12.04cont Cmd="make gpptest-native && make clean && make examples && make clean && make cmake && make clean && make travis-install && make clean && make clangtest-native" COMPILER=cc
+      env: Ubu=12.04cont Cmd="make gpptest-native && make clean examples && make clean cmake && make clean travis-install && make clean clangtest-native" COMPILER=cc
 
 
     # 14.04 LTS Server Edition 64 bit
@@ -87,7 +87,7 @@ matrix:
           packages:
             - valgrind
 
-    - env: Ubu=14.04 Cmd='make -C tests test-lz4 test-lz4c32 CC=gcc-5 MOREFLAGS=-Werror' COMPILER=gcc-5
+    - env: Ubu=14.04 Cmd='make -C tests test-lz4 clean test-lz4c32 CC=gcc-5 MOREFLAGS=-Werror' COMPILER=gcc-5
       dist: trusty
       sudo: required
       addons:
diff --git a/Makefile b/Makefile
index c6454b0..cbf0932 100644
--- a/Makefile
+++ b/Makefile
@@ -36,8 +36,8 @@ VOID    := /dev/null
 
 LIBDIR ?= $(PREFIX)/lib
 INCLUDEDIR=$(PREFIX)/include
-PRGDIR  = programs
 LZ4DIR  = lib
+PRGDIR  = programs
 TESTDIR = tests
 
 
@@ -51,12 +51,15 @@ endif
 
 .PHONY: default all lib lz4 clean test versionsTest examples
 
-default: lz4
+default: lib lz4
 
-all: lib lz4
+all:
+	@$(MAKE) -C $(LZ4DIR) $@
+	@$(MAKE) -C $(PRGDIR) $@
+	@$(MAKE) -C $(TESTDIR) $@
 
 lib:
-	@$(MAKE) -C $(LZ4DIR) all
+	@$(MAKE) -C $(LZ4DIR)
 
 lz4:
 	@$(MAKE) -C $(PRGDIR)
diff --git a/NEWS b/NEWS
index 9bb1a62..b67bf39 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+v1.7.4
+cli : fix : Large file support in 32-bits mode on Mac OS-X
+
 v1.7.3
 Changed : moved to versioning; package, cli and library have same version number
 Improved: Small decompression speed boost
diff --git a/lib/Makefile b/lib/Makefile
index 4c9b929..216d136 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -70,12 +70,18 @@ else
 	SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
 endif
 
-default: lib
+default: lib-release
 
 all: lib
 
+all32: CFLAGS+=-m32
+all32: all
+
 lib: liblz4.a liblz4
 
+lib-release: CFLAGS := -O3
+lib-release: lib
+
 liblz4.a: *.c
 ifeq ($(BUILD_STATIC),yes)
 	@echo compiling static library
@@ -96,7 +102,7 @@ else
 endif
 
 clean:
-	@$(RM) -f core *.o *.a *.$(SHARED_EXT) *.$(SHARED_EXT).* liblz4.pc dll/liblz4.dll dll/liblz4.lib
+	@$(RM) core *.o *.a *.$(SHARED_EXT) *.$(SHARED_EXT).* liblz4.pc dll/liblz4.dll dll/liblz4.lib
 	@echo Cleaning library completed
 
 
diff --git a/lib/lz4.c b/lib/lz4.c
index 89e3a0f..bdbc73f 100644
--- a/lib/lz4.c
+++ b/lib/lz4.c
@@ -141,12 +141,14 @@
   typedef uint32_t U32;
   typedef  int32_t S32;
   typedef uint64_t U64;
+  typedef uintptr_t uptrval;
 #else
   typedef unsigned char       BYTE;
   typedef unsigned short      U16;
   typedef unsigned int        U32;
   typedef   signed int        S32;
   typedef unsigned long long  U64;
+  typedef size_t uptrval;   /* generally true, except OpenVMS-64 */
 #endif
 
 
@@ -1139,8 +1141,8 @@ FORCE_INLINE int LZ4_decompress_generic(
                 s = *ip++;
                 length += s;
             } while ( likely(endOnInput ? ip<iend-RUN_MASK : 1) & (s==255) );
-            if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)(op))) goto _output_error;   /* overflow detection */
-            if ((safeDecode) && unlikely((size_t)(ip+length)<(size_t)(ip))) goto _output_error;   /* overflow detection */
+            if ((safeDecode) && unlikely((uptrval)(op)+length<(uptrval)(op))) goto _output_error;   /* overflow detection */
+            if ((safeDecode) && unlikely((uptrval)(ip)+length<(uptrval)(ip))) goto _output_error;   /* overflow detection */
         }
 
         /* copy literals */
@@ -1178,7 +1180,7 @@ FORCE_INLINE int LZ4_decompress_generic(
                 if ((endOnInput) && (ip > iend-LASTLITERALS)) goto _output_error;
                 length += s;
             } while (s==255);
-            if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)op)) goto _output_error;   /* overflow detection */
+            if ((safeDecode) && unlikely((uptrval)(op)+length<(uptrval)op)) goto _output_error;   /* overflow detection */
         }
         length += MINMATCH;
 
diff --git a/lib/lz4.h b/lib/lz4.h
index babd78c..ec758fe 100644
--- a/lib/lz4.h
+++ b/lib/lz4.h
@@ -85,7 +85,7 @@ extern "C" {
 /*========== Version =========== */
 #define LZ4_VERSION_MAJOR    1    /* for breaking interface changes  */
 #define LZ4_VERSION_MINOR    7    /* for new (non-breaking) interface capabilities */
-#define LZ4_VERSION_RELEASE  3    /* for tweaks, bug-fixes, or development */
+#define LZ4_VERSION_RELEASE  4    /* for tweaks, bug-fixes, or development */
 
 #define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR *100*100 + LZ4_VERSION_MINOR *100 + LZ4_VERSION_RELEASE)
 
diff --git a/programs/Makefile b/programs/Makefile
index de18f78..2f1c3cc 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -29,18 +29,18 @@
 
 DESTDIR ?=
 PREFIX  ?= /usr/local
-VOID    := /dev/null
 BINDIR  := $(PREFIX)/bin
 MANDIR  := $(PREFIX)/share/man/man1
 LZ4DIR  := ../lib
+VOID    := /dev/null
 
 CFLAGS  ?= -O3   # allows custom optimization flags. For example : CFLAGS="-O2 -g" make
-CFLAGS  += -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow \
+CFLAGS  += -g -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow \
            -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes \
 		   -Wpointer-arith -Wstrict-aliasing=1
 CFLAGS  += $(MOREFLAGS)
 CPPFLAGS:= -I$(LZ4DIR) -DXXH_NAMESPACE=LZ4_
-FLAGS   := $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
+FLAGS    = $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
 
 
 # Define *.exe as extension for Windows systems
@@ -52,27 +52,29 @@ endif
 
 
 
-default: lz4
+default: lz4-release
 
-m32: lz4c32
+all: lz4 lz4c
 
-native: lz4 lz4c
-
-all: native m32
+all32: CFLAGS+=-m32
+all32: all
 
 lz4: $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/lz4frame.o $(LZ4DIR)/xxhash.o bench.o lz4io.o lz4cli.o datagen.o
 	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
-lz4c  : $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/lz4frame.o $(LZ4DIR)/xxhash.o bench.o lz4io.o lz4cli.o datagen.o
+lz4-release: CFLAGS := -O3
+lz4-release: lz4
+
+lz4c  : $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/lz4frame.o $(LZ4DIR)/xxhash.o bench.o lz4io.o lz4cli.c datagen.o
 	$(CC) $(FLAGS) -DENABLE_LZ4C_LEGACY_OPTIONS $^ -o $@$(EXT)
 
-lz4c32: $(LZ4DIR)/lz4.c $(LZ4DIR)/lz4hc.c $(LZ4DIR)/lz4frame.c $(LZ4DIR)/xxhash.c bench.c lz4io.c lz4cli.c datagen.c
-	$(CC) -m32 $(FLAGS) -DENABLE_LZ4C_LEGACY_OPTIONS $^ -o $@$(EXT)
+lz4c32: CFLAGS += -m32
+lz4c32: lz4
 
 clean:
 	@$(MAKE) -C $(LZ4DIR) $@ > $(VOID)
 	@$(RM) core *.o *.test tmp* \
-        lz4$(EXT) lz4c$(EXT) lz4c32$(EXT) \
+           lz4$(EXT) lz4c$(EXT)
 	@echo Cleaning completed
 
 
diff --git a/programs/lz4io.c b/programs/lz4io.c
index 4d076a9..e8eaf60 100644
--- a/programs/lz4io.c
+++ b/programs/lz4io.c
@@ -34,6 +34,8 @@
 *  Compiler Options
 **************************************/
 #define _LARGE_FILES           /* Large file support on 32-bits AIX */
+#define _FILE_OFFSET_BITS 64   /* off_t width */
+#define _LARGEFILE_SOURCE
 
 #if defined(__MINGW32__) && !defined(_POSIX_SOURCE)
 #  define _POSIX_SOURCE 1          /* disable %llu warnings with MinGW on Windows */
@@ -74,6 +76,9 @@
 #    define SET_SPARSE_FILE_MODE(file)
 #  endif
 #else
+#  if (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || (defined(__APPLE__) && defined(__MACH__))
+#    define fseek fseeko
+#  endif
 #  define SET_BINARY_MODE(file)
 #  define SET_SPARSE_FILE_MODE(file)
 #endif
@@ -103,9 +108,6 @@
 #define MIN_STREAM_BUFSIZE (192 KB)
 #define LZ4IO_BLOCKSIZEID_DEFAULT 7
 
-#define sizeT sizeof(size_t)
-#define maskT (sizeT - 1)
-
 
 /**************************************
 *  Macros
@@ -623,11 +625,14 @@ static unsigned LZ4IO_readLE32 (const void* s)
     return value32;
 }
 
+#define sizeT sizeof(size_t)
+#define maskT (sizeT - 1)
+
 static unsigned LZ4IO_fwriteSparse(FILE* file, const void* buffer, size_t bufferSize, unsigned storedSkips)
 {
     const size_t* const bufferT = (const size_t*)buffer;   /* Buffer is supposed malloc'ed, hence aligned on size_t */
     const size_t* ptrT = bufferT;
-    size_t  bufferSizeT = bufferSize / sizeT;
+    size_t bufferSizeT = bufferSize / sizeT;
     const size_t* const bufferTEnd = bufferT + bufferSizeT;
     static const size_t segmentSizeT = (32 KB) / sizeT;
 
@@ -716,11 +721,11 @@ static unsigned long long LZ4IO_decodeLegacyStream(FILE* finput, FILE* foutput)
         unsigned int blockSize;
 
         /* Block Size */
-        { size_t const sizeCheck = fread(in_buff, 1, 4, finput);
-          if (sizeCheck == 0) break;                   /* Nothing to read : file read is completed */
-          if (sizeCheck != 4) EXM_THROW(52, "Read error : cannot access block size "); }
-        blockSize = LZ4IO_readLE32(in_buff);       /* Convert to Little Endian */
-        if (blockSize > LZ4_COMPRESSBOUND(LEGACY_BLOCKSIZE)) {
+        {   size_t const sizeCheck = fread(in_buff, 1, 4, finput);
+            if (sizeCheck == 0) break;                   /* Nothing to read : file read is completed */
+            if (sizeCheck != 4) EXM_THROW(52, "Read error : cannot access block size "); }
+            blockSize = LZ4IO_readLE32(in_buff);       /* Convert to Little Endian */
+            if (blockSize > LZ4_COMPRESSBOUND(LEGACY_BLOCKSIZE)) {
             /* Cannot read next block : maybe new stream ? */
             g_magicRead = blockSize;
             break;
diff --git a/tests/Makefile b/tests/Makefile
index 4e96769..4b0f503 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -23,21 +23,18 @@
 #  - LZ4 source repository : https://github.com/lz4/lz4
 # ##########################################################################
 # fuzzer  : Test tool, to check lz4 integrity on target platform
-# fuzzer32: Same as fuzzer, but forced to compile in 32-bits mode
 # frametest  : Test tool, to check lz4frame integrity on target platform
-# frametest32: Same as frametest, but forced to compile in 32-bits mode
 # fullbench  : Precisely measure speed for each LZ4 function variant
-# fullbench32: Same as fullbench, but forced to compile in 32-bits mode
 # datagen : generates synthetic data samples for tests & benchmarks
 # ##########################################################################
 
 DESTDIR ?=
 PREFIX  ?= /usr/local
-VOID    := /dev/null
 BINDIR  := $(PREFIX)/bin
 MANDIR  := $(PREFIX)/share/man/man1
-LZ4DIR  := ../lib
+LIBDIR  := ../lib
 PRGDIR  := ../programs
+VOID    := /dev/null
 TESTDIR := versionsTest
 PYTHON  ?= python3
 
@@ -46,8 +43,8 @@ CFLAGS  += -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow -Wswitch-enum
            -Wdeclaration-after-statement -Wstrict-prototypes \
            -Wpointer-arith -Wstrict-aliasing=1
 CFLAGS  += $(MOREFLAGS)
-CPPFLAGS:= -I$(LZ4DIR) -DXXH_NAMESPACE=LZ4_
-FLAGS   := $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
+CPPFLAGS:= -I$(LIBDIR) -DXXH_NAMESPACE=LZ4_
+FLAGS    = $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
 
 
 # Define *.exe as extension for Windows systems
@@ -56,6 +53,7 @@ EXT =.exe
 else
 EXT =
 endif
+LZ4     := $(PRGDIR)/lz4$(EXT)
 
 
 # Default test parameters
@@ -64,58 +62,48 @@ FUZZER_TIME  := -T3mn
 NB_LOOPS     ?= -i1
 
 
-default: native
-
-m32: fullbench32 fuzzer32 frametest32
-
-native: fullbench fuzzer frametest datagen fasttest
+default: all
 
-all: native m32
+all: fullbench fuzzer frametest datagen fasttest
 
+all32: CFLAGS+=-m32
+all32: all
 
 lz4:
-	$(MAKE) -C $(PRGDIR) $@
+	$(MAKE) -C $(PRGDIR) clean $@ CFLAGS="$(CFLAGS)"
 
 lz4c:
-	$(MAKE) -C $(PRGDIR) $@
+	$(MAKE) -C $(PRGDIR) clean $@ CFLAGS="$(CFLAGS)"
 
-lz4c32:
-	$(MAKE) -C $(PRGDIR) $@
+lz4c32:   # create a 32-bits version for 32/64 interop tests
+	$(MAKE) -C $(PRGDIR) clean $@ CFLAGS="-m32 $(CFLAGS)"
+	cp $(LZ4) $(LZ4)c32
 
-fullbench  : $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/lz4frame.o $(LZ4DIR)/xxhash.o fullbench.c
+fullbench  : $(LIBDIR)/lz4.o $(LIBDIR)/lz4hc.o $(LIBDIR)/lz4frame.o $(LIBDIR)/xxhash.o fullbench.c
 	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
-fullbench32: $(LZ4DIR)/lz4.c $(LZ4DIR)/lz4hc.c $(LZ4DIR)/lz4frame.c $(LZ4DIR)/xxhash.c fullbench.c
-	$(CC) -m32 $(FLAGS) $^ -o $@$(EXT)
+fullbench-lib: fullbench.c $(LIBDIR)/xxhash.c
+	$(MAKE) -C $(LIBDIR) liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT) $(LIBDIR)/liblz4.a
 
-fullbench-lib: fullbench.c $(LZ4DIR)/xxhash.c
-	$(MAKE) -C $(LZ4DIR) liblz4.a
-	$(CC) $(FLAGS) $^ -o $@$(EXT) $(LZ4DIR)/liblz4.a
+fullbench-dll: fullbench.c $(LIBDIR)/xxhash.c
+	$(MAKE) -C $(LIBDIR) liblz4
+	$(CC) $(FLAGS) $^ -o $@$(EXT) -DLZ4_DLL_IMPORT=1 $(LIBDIR)/dll/liblz4.dll
 
-fullbench-dll: fullbench.c $(LZ4DIR)/xxhash.c
-	$(MAKE) -C $(LZ4DIR) liblz4
-	$(CC) $(FLAGS) $^ -o $@$(EXT) -DLZ4_DLL_IMPORT=1 $(LZ4DIR)/dll/liblz4.dll
-
-fuzzer  : $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/xxhash.o fuzzer.c
+fuzzer  : $(LIBDIR)/lz4.o $(LIBDIR)/lz4hc.o $(LIBDIR)/xxhash.o fuzzer.c
 	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
-fuzzer32: $(LZ4DIR)/lz4.c $(LZ4DIR)/lz4hc.c $(LZ4DIR)/xxhash.c fuzzer.c
-	$(CC) -m32 $(FLAGS) $^ -o $@$(EXT)
-
-frametest: $(LZ4DIR)/lz4frame.o $(LZ4DIR)/lz4.o $(LZ4DIR)/lz4hc.o $(LZ4DIR)/xxhash.o frametest.c
+frametest: $(LIBDIR)/lz4frame.o $(LIBDIR)/lz4.o $(LIBDIR)/lz4hc.o $(LIBDIR)/xxhash.o frametest.c
 	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
-frametest32: $(LZ4DIR)/lz4frame.c $(LZ4DIR)/lz4.c $(LZ4DIR)/lz4hc.c $(LZ4DIR)/xxhash.c frametest.c
-	$(CC) -m32 $(FLAGS) $^ -o $@$(EXT)
-
-fasttest: $(LZ4DIR)/lz4.o fasttest.c
+fasttest: $(LIBDIR)/lz4.o fasttest.c
 	$(CC) $(FLAGS) $^ -o $@$(EXT)
 
 datagen : $(PRGDIR)/datagen.c datagencli.c
 	$(CC) $(FLAGS) -I$(PRGDIR) $^ -o $@$(EXT)
 
 clean:
-	@$(MAKE) -C $(LZ4DIR) $@ > $(VOID)
+	@$(MAKE) -C $(LIBDIR) $@ > $(VOID)
 	@$(RM) core *.o *.test tmp* \
         fullbench-dll$(EXT) fullbench-lib$(EXT) \
         fullbench$(EXT) fullbench32$(EXT) \
@@ -134,40 +122,44 @@ versionsTest:
 #FreeBSD targets
 ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU FreeBSD))
 
-test: test-lz4 test-lz4c test-fasttest test-frametest test-fullbench test-fuzzer
+MD5:=md5sum
+ifneq (,$(filter $(shell uname), Darwin ))
+MD5:=md5 -r
+endif
 
-test32: test-lz4c32 test-frametest32 test-fullbench32 test-fuzzer32
+test: test-lz4 test-lz4c test-fasttest test-frametest test-fullbench test-fuzzer
 
-test-all: test test32
+test32: CFLAGS+=-m32
+test32: test
 
 test-lz4-sparse: lz4 datagen
 	@echo "\n ---- test sparse file support ----"
 	./datagen -g5M  -P100 > tmpSrc
-	$(PRGDIR)/lz4 -B4D tmpSrc | $(PRGDIR)/lz4 -dv --sparse > tmpB4
+	$(LZ4) -B4D tmpSrc | $(LZ4) -dv --sparse > tmpB4
 	diff -s tmpSrc tmpB4
-	$(PRGDIR)/lz4 -B5D tmpSrc | $(PRGDIR)/lz4 -dv --sparse > tmpB5
+	$(LZ4) -B5D tmpSrc | $(LZ4) -dv --sparse > tmpB5
 	diff -s tmpSrc tmpB5
-	$(PRGDIR)/lz4 -B6D tmpSrc | $(PRGDIR)/lz4 -dv --sparse > tmpB6
+	$(LZ4) -B6D tmpSrc | $(LZ4) -dv --sparse > tmpB6
 	diff -s tmpSrc tmpB6
-	$(PRGDIR)/lz4 -B7D tmpSrc | $(PRGDIR)/lz4 -dv --sparse > tmpB7
+	$(LZ4) -B7D tmpSrc | $(LZ4) -dv --sparse > tmpB7
 	diff -s tmpSrc tmpB7
-	$(PRGDIR)/lz4 tmpSrc | $(PRGDIR)/lz4 -dv --no-sparse > tmpNoSparse
+	$(LZ4) tmpSrc | $(LZ4) -dv --no-sparse > tmpNoSparse
 	diff -s tmpSrc tmpNoSparse
 	ls -ls tmp*
-	./datagen -s1 -g1200007 -P100 | $(PRGDIR)/lz4 | $(PRGDIR)/lz4 -dv --sparse > tmpOdd   # Odd size file (to generate non-full last block)
+	./datagen -s1 -g1200007 -P100 | $(LZ4) | $(LZ4) -dv --sparse > tmpOdd   # Odd size file (to generate non-full last block)
 	./datagen -s1 -g1200007 -P100 | diff -s - tmpOdd
 	ls -ls tmpOdd
 	@$(RM) tmp*
 	@echo "\n Compatibility with Console :"
-	echo "Hello World 1 !" | $(PRGDIR)/lz4 | $(PRGDIR)/lz4 -d -c
-	echo "Hello World 2 !" | $(PRGDIR)/lz4 | $(PRGDIR)/lz4 -d | cat
-	echo "Hello World 3 !" | $(PRGDIR)/lz4 --no-frame-crc | $(PRGDIR)/lz4 -d -c
+	echo "Hello World 1 !" | $(LZ4) | $(LZ4) -d -c
+	echo "Hello World 2 !" | $(LZ4) | $(LZ4) -d | cat
+	echo "Hello World 3 !" | $(LZ4) --no-frame-crc | $(LZ4) -d -c
 	@echo "\n Compatibility with Append :"
 	./datagen -P100 -g1M > tmp1M
 	cat tmp1M tmp1M > tmp2M
-	$(PRGDIR)/lz4 -B5 -v tmp1M tmpC
-	$(PRGDIR)/lz4 -d -v tmpC tmpR
-	$(PRGDIR)/lz4 -d -v tmpC >> tmpR
+	$(LZ4) -B5 -v tmp1M tmpC
+	$(LZ4) -d -v tmpC tmpR
+	$(LZ4) -d -v tmpC >> tmpR
 	ls -ls tmp*
 	diff tmp2M tmpR
 	@$(RM) tmp*
@@ -175,14 +167,15 @@ test-lz4-sparse: lz4 datagen
 test-lz4-contentSize: lz4 datagen
 	@echo "\n ---- test original size support ----"
 	./datagen -g15M > tmp
-	$(PRGDIR)/lz4 -v tmp | $(PRGDIR)/lz4 -t
-	$(PRGDIR)/lz4 -v --content-size tmp | $(PRGDIR)/lz4 -d > tmp2
+	$(LZ4) -v tmp | $(LZ4) -t
+	$(LZ4) -v --content-size tmp | $(LZ4) -d > tmp2
 	diff -s tmp tmp2
 	# test large size [2-4] GB
-	@./datagen -g3G -P100 | $(PRGDIR)/lz4 | $(PRGDIR)/lz4 --decompress --force --sparse - tmp
+	@./datagen -g3G -P100 | $(LZ4) --verbose | $(LZ4) --decompress --force --sparse - tmp
 	@ls -ls tmp
-	$(PRGDIR)/lz4 --quiet --content-size tmp | $(PRGDIR)/lz4 --verbose --decompress --force --sparse - tmp2
+	@./datagen -g3G -P100 | $(LZ4) --quiet --content-size | $(LZ4) --verbose --decompress --force --sparse - tmp2
 	@ls -ls tmp2
+	diff -s tmp tmp2
 	@$(RM) tmp*
 
 test-lz4-frame-concatenation: lz4 datagen
@@ -190,10 +183,10 @@ test-lz4-frame-concatenation: lz4 datagen
 	@echo -n > empty.test
 	@echo hi > nonempty.test
 	cat nonempty.test empty.test nonempty.test > orig.test
-	@$(PRGDIR)/lz4 -zq empty.test > empty.lz4.test
-	@$(PRGDIR)/lz4 -zq nonempty.test > nonempty.lz4.test
+	@$(LZ4) -zq empty.test > empty.lz4.test
+	@$(LZ4) -zq nonempty.test > nonempty.lz4.test
 	cat nonempty.lz4.test empty.lz4.test nonempty.lz4.test > concat.lz4.test
-	$(PRGDIR)/lz4 -d concat.lz4.test > result.test
+	$(LZ4) -d concat.lz4.test > result.test
 	sdiff orig.test result.test
 	@$(RM) *.test
 	@echo frame concatenation test completed
@@ -203,54 +196,54 @@ test-lz4-multiple: lz4 datagen
 	@./datagen -s1        > tmp1 2> $(VOID)
 	@./datagen -s2 -g100K > tmp2 2> $(VOID)
 	@./datagen -s3 -g1M   > tmp3 2> $(VOID)
-	$(PRGDIR)/lz4 -f -m tmp*
+	$(LZ4) -f -m tmp*
 	ls -ls tmp*
 	@$(RM) tmp1 tmp2 tmp3
-	$(PRGDIR)/lz4 -df -m *.lz4
+	$(LZ4) -df -m *.lz4
 	ls -ls tmp*
-	$(PRGDIR)/lz4 -f -m tmp1 notHere tmp2; echo $$?
+	$(LZ4) -f -m tmp1 notHere tmp2; echo $$?
 	@$(RM) tmp*
 
 test-lz4-basic: lz4 datagen
 	@echo "\n ---- test lz4 basic compression/decompression ----"
-	./datagen -g0     | $(PRGDIR)/lz4 -v     | $(PRGDIR)/lz4 -t
-	./datagen -g16KB  | $(PRGDIR)/lz4 -9     | $(PRGDIR)/lz4 -t
+	./datagen -g0     | $(LZ4) -v     | $(LZ4) -t
+	./datagen -g16KB  | $(LZ4) -9     | $(LZ4) -t
 	./datagen -g20KB > tmpSrc
-	$(PRGDIR)/lz4 < tmpSrc | $(PRGDIR)/lz4 -d > tmpRes
+	$(LZ4) < tmpSrc | $(LZ4) -d > tmpRes
 	diff -q tmpSrc tmpRes
-	$(PRGDIR)/lz4 --no-frame-crc < tmpSrc | $(PRGDIR)/lz4 -d > tmpRes
+	$(LZ4) --no-frame-crc < tmpSrc | $(LZ4) -d > tmpRes
 	diff -q tmpSrc tmpRes
-	./datagen         | $(PRGDIR)/lz4        | $(PRGDIR)/lz4 -t
-	./datagen -g6M -P99 | $(PRGDIR)/lz4 -9BD | $(PRGDIR)/lz4 -t
-	./datagen -g17M   | $(PRGDIR)/lz4 -9v    | $(PRGDIR)/lz4 -qt
-	./datagen -g33M   | $(PRGDIR)/lz4 --no-frame-crc | $(PRGDIR)/lz4 -t
-	./datagen -g256MB | $(PRGDIR)/lz4 -vqB4D | $(PRGDIR)/lz4 -t
+	./datagen         | $(LZ4)        | $(LZ4) -t
+	./datagen -g6M -P99 | $(LZ4) -9BD | $(LZ4) -t
+	./datagen -g17M   | $(LZ4) -9v    | $(LZ4) -qt
+	./datagen -g33M   | $(LZ4) --no-frame-crc | $(LZ4) -t
+	./datagen -g256MB | $(LZ4) -vqB4D | $(LZ4) -t
 	@$(RM) tmp*
 
 test-lz4-hugefile: lz4 datagen
 	@echo "\n ---- test huge files compression/decompression ----"
-	./datagen -g6GB   | $(PRGDIR)/lz4 -vB5D  | $(PRGDIR)/lz4 -qt
-	./datagen -g6GB   | $(PRGDIR)/lz4 -v5BD  | $(PRGDIR)/lz4 -qt
+	./datagen -g6GB   | $(LZ4) -vB5D  | $(LZ4) -qt
+	./datagen -g6GB   | $(LZ4) -v5BD  | $(LZ4) -qt
 	@$(RM) tmp*
 
 test-lz4-testmode: lz4 datagen
 	@echo "\n ---- bench mode ----"
-	$(PRGDIR)/lz4 -bi1
+	$(LZ4) -bi1
 	@echo "\n ---- test mode ----"
-	./datagen | $(PRGDIR)/lz4 -t             && false || true
-	./datagen | $(PRGDIR)/lz4 -tf            && false || true
+	./datagen | $(LZ4) -t             && false || true
+	./datagen | $(LZ4) -tf            && false || true
 	@echo "\n ---- pass-through mode ----"
-	./datagen | $(PRGDIR)/lz4 -d  > $(VOID)  && false || true
-	./datagen | $(PRGDIR)/lz4 -df > $(VOID)
+	./datagen | $(LZ4) -d  > $(VOID)  && false || true
+	./datagen | $(LZ4) -df > $(VOID)
 	@echo "Hello World !" > tmp1
-	$(PRGDIR)/lz4 -dcf tmp1
+	$(LZ4) -dcf tmp1
 	@echo "from underground..." > tmp2
-	$(PRGDIR)/lz4 -dcfm tmp1 tmp2
+	$(LZ4) -dcfm tmp1 tmp2
 	@echo "\n ---- test cli ----"
-	$(PRGDIR)/lz4     file-does-not-exist    && false || true
-	$(PRGDIR)/lz4 -f  file-does-not-exist    && false || true
-	$(PRGDIR)/lz4 -fm file1-dne file2-dne    && false || true
-	$(PRGDIR)/lz4 -fm file1-dne file2-dne    && false || true
+	$(LZ4)     file-does-not-exist    && false || true
+	$(LZ4) -f  file-does-not-exist    && false || true
+	$(LZ4) -fm file1-dne file2-dne    && false || true
+	$(LZ4) -fm file1-dne file2-dne    && false || true
 
 test-lz4: lz4 datagen test-lz4-basic test-lz4-multiple test-lz4-sparse \
           test-lz4-frame-concatenation test-lz4-testmode test-lz4-contentSize \
@@ -258,53 +251,54 @@ test-lz4: lz4 datagen test-lz4-basic test-lz4-multiple test-lz4-sparse \
 
 test-lz4c: lz4c datagen
 	@echo "\n ---- test lz4c version ----"
-	./datagen -g256MB | $(PRGDIR)/lz4c -l -v    | $(PRGDIR)/lz4c   -t
+	./datagen -g256MB | $(LZ4)c -l -v    | $(LZ4)c   -t
+
+test-lz4c32: CFLAGS+=-m32
+test-lz4c32: test-lz4
 
 test-interop-32-64: lz4 lz4c32 datagen
 	@echo "\n ---- test interoperability 32-bits -vs- 64 bits ----"
-	./datagen -g16KB  | $(PRGDIR)/lz4c32 -9     | $(PRGDIR)/lz4    -t
-	./datagen -P10    | $(PRGDIR)/lz4    -9B4   | $(PRGDIR)/lz4c32 -t
-	./datagen         | $(PRGDIR)/lz4c32        | $(PRGDIR)/lz4    -t
-	./datagen -g1M    | $(PRGDIR)/lz4    -3B5   | $(PRGDIR)/lz4c32 -t
-	./datagen -g256MB | $(PRGDIR)/lz4c32 -vqB4D | $(PRGDIR)/lz4    -qt
-	./datagen -g1G -P90 | $(PRGDIR)/lz4         | $(PRGDIR)/lz4c32 -t
-	./datagen -g6GB   | $(PRGDIR)/lz4c32 -vq9BD | $(PRGDIR)/lz4    -qt
+	./datagen -g16KB  | $(LZ4)c32 -9     | $(LZ4)    -t
+	./datagen -P10    | $(LZ4)    -9B4   | $(LZ4)c32 -t
+	./datagen         | $(LZ4)c32        | $(LZ4)    -t
+	./datagen -g1M    | $(LZ4)    -3B5   | $(LZ4)c32 -t
+	./datagen -g256MB | $(LZ4)c32 -vqB4D | $(LZ4)    -qt
+	./datagen -g1G -P90 | $(LZ4)         | $(LZ4)c32 -t
+	./datagen -g6GB   | $(LZ4)c32 -vq9BD | $(LZ4)    -qt
 
 test-lz4c32-basic: lz4c32 datagen
 	@echo "\n ---- test lz4c32 32-bits version ----"
-	./datagen -g16KB  | $(PRGDIR)/lz4c32 -9     | $(PRGDIR)/lz4c32 -t
-	./datagen         | $(PRGDIR)/lz4c32        | $(PRGDIR)/lz4c32 -t
-	./datagen -g256MB | $(PRGDIR)/lz4c32 -vqB4D | $(PRGDIR)/lz4c32 -qt
-	./datagen -g6GB   | $(PRGDIR)/lz4c32 -vqB5D | $(PRGDIR)/lz4c32 -qt
+	./datagen -g16KB  | $(LZ4)c32 -9     | $(LZ4)c32 -t
+	./datagen         | $(LZ4)c32        | $(LZ4)c32 -t
+	./datagen -g256MB | $(LZ4)c32 -vqB4D | $(LZ4)c32 -qt
+	./datagen -g6GB   | $(LZ4)c32 -vqB5D | $(LZ4)c32 -qt
 
 test-platform:
 	@echo "\n ---- test lz4 $(QEMU_SYS) platform ----"
-	$(QEMU_SYS) ./datagen -g16KB  | $(QEMU_SYS) $(PRGDIR)/lz4 -9     | $(QEMU_SYS) $(PRGDIR)/lz4 -t
-	$(QEMU_SYS) ./datagen         | $(QEMU_SYS) $(PRGDIR)/lz4        | $(QEMU_SYS) $(PRGDIR)/lz4 -t
-	$(QEMU_SYS) ./datagen -g256MB | $(QEMU_SYS) $(PRGDIR)/lz4 -vqB4D | $(QEMU_SYS) $(PRGDIR)/lz4 -qt
+	$(QEMU_SYS) ./datagen -g16KB  | $(QEMU_SYS) $(LZ4) -9     | $(QEMU_SYS) $(LZ4) -t
+	$(QEMU_SYS) ./datagen         | $(QEMU_SYS) $(LZ4)        | $(QEMU_SYS) $(LZ4) -t
+	$(QEMU_SYS) ./datagen -g256MB | $(QEMU_SYS) $(LZ4) -vqB4D | $(QEMU_SYS) $(LZ4) -qt
 ifneq ($(QEMU_SYS),qemu-arm-static)
-	$(QEMU_SYS) ./datagen -g3GB   | $(QEMU_SYS) $(PRGDIR)/lz4 -vqB5D | $(QEMU_SYS) $(PRGDIR)/lz4 -qt
+	$(QEMU_SYS) ./datagen -g3GB   | $(QEMU_SYS) $(LZ4) -vqB5D | $(QEMU_SYS) $(LZ4) -qt
 endif
 
-test-lz4c32: test-lz4c32-basic test-interop-32-64
-
 test-fullbench: fullbench
 	./fullbench --no-prompt $(NB_LOOPS) $(TEST_FILES)
 
-test-fullbench32: fullbench32
-	./fullbench32 --no-prompt $(NB_LOOPS) $(TEST_FILES)
+test-fullbench32: CFLAGS += -m32
+test-fullbench32: test-fullbench
 
 test-fuzzer: fuzzer
 	./fuzzer $(FUZZER_TIME)
 
-test-fuzzer32: fuzzer32
-	./fuzzer32 $(FUZZER_TIME)
+test-fuzzer32: CFLAGS += -m32
+test-fuzzer32: test-fuzzer
 
 test-frametest: frametest
 	./frametest $(FUZZER_TIME)
 
-test-frametest32: frametest32
-	./frametest32 $(FUZZER_TIME)
+test-frametest32: CFLAGS += -m32
+test-frametest32: test-frametest
 
 test-fasttest: fasttest
 	./fasttest
@@ -313,17 +307,17 @@ test-mem: lz4 datagen fuzzer frametest fullbench
 	@echo "\n ---- valgrind tests : memory analyzer ----"
 	valgrind --leak-check=yes --error-exitcode=1 ./datagen -g50M > $(VOID)
 	./datagen -g16KB > tmp
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 -9 -BD -f tmp $(VOID)
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) -9 -BD -f tmp $(VOID)
 	./datagen -g16KB -s2 > tmp2
 	./datagen -g16KB -s3 > tmp3
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 --force --multiple tmp tmp2 tmp3
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) --force --multiple tmp tmp2 tmp3
 	./datagen -g16MB > tmp
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 -9 -B5D -f tmp tmp2
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 -t tmp2
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 -bi1 tmp
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) -9 -B5D -f tmp tmp2
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) -t tmp2
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) -bi1 tmp
 	valgrind --leak-check=yes --error-exitcode=1 ./fullbench -i1 tmp tmp2
 	./datagen -g256MB > tmp
-	valgrind --leak-check=yes --error-exitcode=1 $(PRGDIR)/lz4 -B4D -f -vq tmp $(VOID)
+	valgrind --leak-check=yes --error-exitcode=1 $(LZ4) -B4D -f -vq tmp $(VOID)
 	$(RM) tmp*
 	valgrind --leak-check=yes --error-exitcode=1 ./fuzzer -i64 -t1
 	valgrind --leak-check=yes --error-exitcode=1 ./frametest -i256
diff --git a/tests/fullbench.c b/tests/fullbench.c
index 1cac1e0..03dfe19 100644
--- a/tests/fullbench.c
+++ b/tests/fullbench.c
@@ -229,16 +229,6 @@ static int local_LZ4_saveDict(const char* in, char* out, int inSize)
     return LZ4_saveDict(&LZ4_stream, out, inSize);
 }
 
-static int local_LZ4_compress_default(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_default(in, out, inSize, LZ4_compressBound(inSize));
-}
-
-static int local_LZ4_compress_limitedOutput(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_default(in, out, inSize, LZ4_compressBound(inSize)-1);
-}
-
 static int local_LZ4_compress_default_large(const char* in, char* out, int inSize)
 {
     return LZ4_compress_default(in, out, inSize, LZ4_compressBound(inSize));
@@ -279,26 +269,6 @@ static int local_LZ4_compress_fast_continue0(const char* in, char* out, int inSi
     return LZ4_compress_fast_continue(&LZ4_stream, in, out, inSize, LZ4_compressBound(inSize), 0);
 }
 
-static int local_LZ4_compress_withState(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_fast_extState(&LZ4_stream, in, out, inSize, LZ4_compressBound(inSize), 1);
-}
-
-static int local_LZ4_compress_limitedOutput_withState(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_fast_extState(&LZ4_stream, in, out, inSize, LZ4_compressBound(inSize)-1, 1);
-}
-
-static int local_LZ4_compress_continue(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_fast_continue(&LZ4_stream, in, out, inSize, LZ4_compressBound(inSize), 1);
-}
-
-static int local_LZ4_compress_limitedOutput_continue(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_fast_continue(&LZ4_stream, in, out, inSize, LZ4_compressBound(inSize)-1, 1);
-}
-
 #ifndef LZ4_DLL_IMPORT
 /* declare hidden function */
 int LZ4_compress_forceExtDict (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize);
@@ -328,31 +298,16 @@ static int local_LZ4_compress_HC(const char* in, char* out, int inSize)
     return LZ4_compress_HC(in, out, inSize, LZ4_compressBound(inSize), 9);
 }
 
-static int local_LZ4_compressHC_withStateHC(const char* in, char* out, int inSize)
+static int local_LZ4_compress_HC_extStateHC(const char* in, char* out, int inSize)
 {
     return LZ4_compress_HC_extStateHC(&LZ4_streamHC, in, out, inSize, LZ4_compressBound(inSize), 9);
 }
 
-static int local_LZ4_compressHC_limitedOutput_withStateHC(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_HC_extStateHC(&LZ4_streamHC, in, out, inSize, LZ4_compressBound(inSize)-1, 9);
-}
-
-static int local_LZ4_compressHC_limitedOutput(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_HC(in, out, inSize, LZ4_compressBound(inSize)-1, 9);
-}
-
-static int local_LZ4_compressHC_continue(const char* in, char* out, int inSize)
+static int local_LZ4_compress_HC_continue(const char* in, char* out, int inSize)
 {
     return LZ4_compress_HC_continue(&LZ4_streamHC, in, out, inSize, LZ4_compressBound(inSize));
 }
 
-static int local_LZ4_compressHC_limitedOutput_continue(const char* in, char* out, int inSize)
-{
-    return LZ4_compress_HC_continue(&LZ4_streamHC, in, out, inSize, LZ4_compressBound(inSize)-1);
-}
-
 
 /* decompression functions */
 static int local_LZ4_decompress_fast(const char* in, char* out, int inSize, int outSize)
@@ -530,11 +485,8 @@ int fullSpeedBench(const char** fileNamesTable, int nbFiles)
             case 8 : compressionFunction = local_LZ4_compress_fast_continue0; initFunction = local_LZ4_createStream; compressorName = "LZ4_compress_fast_continue(0)"; break;
 
             case 10: compressionFunction = local_LZ4_compress_HC; compressorName = "LZ4_compress_HC"; break;
-            case 11: compressionFunction = local_LZ4_compressHC_limitedOutput; compressorName = "LZ4_compressHC_limitedOutput"; break;
-            case 12 : compressionFunction = local_LZ4_compressHC_withStateHC; compressorName = "LZ4_compressHC_withStateHC"; break;
-            case 13: compressionFunction = local_LZ4_compressHC_limitedOutput_withStateHC; compressorName = "LZ4_compressHC_limitedOutput_withStateHC"; break;
-            case 14: compressionFunction = local_LZ4_compressHC_continue; initFunction = local_LZ4_resetStreamHC; compressorName = "LZ4_compressHC_continue"; break;
-            case 15: compressionFunction = local_LZ4_compressHC_limitedOutput_continue; initFunction = local_LZ4_resetStreamHC; compressorName = "LZ4_compressHC_limitedOutput_continue"; break;
+            case 12: compressionFunction = local_LZ4_compress_HC_extStateHC; compressorName = "LZ4_compress_HC_extStateHC"; break;
+            case 14: compressionFunction = local_LZ4_compress_HC_continue; initFunction = local_LZ4_resetStreamHC; compressorName = "LZ4_compress_HC_continue"; break;
 #ifndef LZ4_DLL_IMPORT
 			case 20: compressionFunction = local_LZ4_compress_forceDict; initFunction = local_LZ4_resetDictT; compressorName = "LZ4_compress_forceDict"; break;
 #endif
@@ -549,13 +501,6 @@ int fullSpeedBench(const char** fileNamesTable, int nbFiles)
                         if (chunkP[0].origSize < 8) { DISPLAY(" cannot bench %s with less then 8 bytes \n", compressorName); continue; }
                         LZ4_loadDictHC(&LZ4_streamHC, chunkP[0].origBuffer, chunkP[0].origSize);
                         break;
-            case 60: DISPLAY("Obsolete compression functions : \n"); continue;
-            case 61: compressionFunction = local_LZ4_compress_default; compressorName = "LZ4_compress_default"; break;
-            case 62: compressionFunction = local_LZ4_compress_limitedOutput; compressorName = "LZ4_compress_limitedOutput"; break;
-            case 63: compressionFunction = local_LZ4_compress_withState; compressorName = "LZ4_compress_withState"; break;
-            case 64: compressionFunction = local_LZ4_compress_limitedOutput_withState; compressorName = "LZ4_compress_limitedOutput_withState"; break;
-            case 65: compressionFunction = local_LZ4_compress_continue; initFunction = local_LZ4_createStream; compressorName = "LZ4_compress_continue"; break;
-            case 66: compressionFunction = local_LZ4_compress_limitedOutput_continue; initFunction = local_LZ4_createStream; compressorName = "LZ4_compress_limitedOutput_continue"; break;
             default :
                 continue;   /* unknown ID : just skip */
             }
diff --git a/tests/fuzzer.c b/tests/fuzzer.c
index 301b01a..06cfd40 100644
--- a/tests/fuzzer.c
+++ b/tests/fuzzer.c
@@ -170,7 +170,7 @@ static void FUZ_fillCompressibleNoiseBuffer(void* buffer, size_t bufferSize, dou
 static int FUZ_AddressOverflow(void)
 {
     char* buffers[MAX_NB_BUFF_I134+1];
-    int i, nbBuff=0;
+    int nbBuff=0;
     int highAddress = 0;
 
     DISPLAY("Overflow tests : ");
@@ -185,12 +185,13 @@ static int FUZ_AddressOverflow(void)
     buffers[0] = (char*)malloc(BLOCKSIZE_I134);
     buffers[1] = (char*)malloc(BLOCKSIZE_I134);
     if ((!buffers[0]) || (!buffers[1])) {
+        free(buffers[0]); free(buffers[1]);
         DISPLAY("not enough memory for tests \n");
         return 0;
     }
 
     for (nbBuff=2; nbBuff < MAX_NB_BUFF_I134; nbBuff++) {
-        DISPLAY("%3i \b\b\b\b", nbBuff);
+        DISPLAY("%3i \b\b\b\b", nbBuff); fflush(stdout);
         buffers[nbBuff] = (char*)malloc(BLOCKSIZE_I134);
         if (buffers[nbBuff]==NULL) goto _endOfTests;
 
@@ -201,7 +202,7 @@ static int FUZ_AddressOverflow(void)
         }
 
         {   size_t const sizeToGenerateOverflow = (size_t)(- ((uintptr_t)buffers[nbBuff-1]) + 512);
-            int const nbOf255 = (int)((sizeToGenerateOverflow / 255) + 1);
+            unsigned const nbOf255 = (unsigned)((sizeToGenerateOverflow / 255) + 1);
             char* const input = buffers[nbBuff-1];
             char* output = buffers[nbBuff];
             int r;
@@ -209,15 +210,15 @@ static int FUZ_AddressOverflow(void)
             input[1] = (char)0xFF;
             input[2] = (char)0xFF;
             input[3] = (char)0xFF;
-            for(i = 4; i <= nbOf255+4; i++) input[i] = (char)0xff;
+            { unsigned u; for(u = 4; u <= nbOf255+4; u++) input[u] = (char)0xff; }
             r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
-            if (r>0) goto _overflowError;
+            if (r>0) { DISPLAY("LZ4_decompress_safe = %i \n", r); goto _overflowError; }
             input[0] = (char)0x1F;   /* Match length overflow */
             input[1] = (char)0x01;
             input[2] = (char)0x01;
             input[3] = (char)0x00;
             r = LZ4_decompress_safe(input, output, nbOf255+64, BLOCKSIZE_I134);
-            if (r>0) goto _overflowError;
+            if (r>0) { DISPLAY("LZ4_decompress_safe = %i \n", r); goto _overflowError; }
 
             output = buffers[nbBuff-2];   /* Reverse in/out pointer order */
             input[0] = (char)0xF0;   /* Literal length overflow */
@@ -237,7 +238,7 @@ static int FUZ_AddressOverflow(void)
 
     nbBuff++;
 _endOfTests:
-    for (i=0 ; i<nbBuff; i++) free(buffers[i]);
+    { int i; for (i=0 ; i<nbBuff; i++) free(buffers[i]); }
     if (!highAddress) DISPLAY("high address not possible \n");
     else DISPLAY("all overflows correctly detected \n");
     return 0;