Code review markups:

- Correct use of CPPFLAGS
- Detect allocation failure
- Add a CHECK macro for failure

1 files changed, 11 insertions, 7 deletions

diff --git a/ossfuzz/compress_fuzzer.cc b/ossfuzz/compress_fuzzer.cc
index 006a0ab..4a720e2 100644
--- a/ossfuzz/compress_fuzzer.cc
+++ b/ossfuzz/compress_fuzzer.cc
@@ -3,20 +3,24 @@
 #include <stdlib.h>
 #include "lz4.h"
 
+#define CHECK(COND)   if (!(COND)) { abort(); }
+
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
   size_t const compressed_dest_size = LZ4_compressBound(size);
   char *const dest_buffer = (char *)malloc(compressed_dest_size);
 
-  int result = LZ4_compress_default((const char*)data, dest_buffer,
-                                    size, compressed_dest_size);
-
-  if (result == 0)
+  if (dest_buffer != NULL)
   {
-    abort();
-  }
+    // Allocation succeeded, try compressing the incoming data.
+    int result = LZ4_compress_default((const char*)data,
+                                      dest_buffer,
+                                      size,
+                                      compressed_dest_size);
+    CHECK(result != 0);
 
-  free(dest_buffer);
+    free(dest_buffer);
+  }
 
   return 0;
 }