windows: fix integer truncation issues for helper binaries

Disable the size_t truncation warning.  (Note that this leaves on
the other truncation-related warnings, like int->char.)

4 files changed, 14 insertions, 6 deletions

diff --git a/configure.py b/configure.py
index 95f88b1..76abc72 100755
--- a/configure.py
+++ b/configure.py
@@ -110,6 +110,9 @@ else:
 if platform == 'windows':
     cflags = ['/nologo', '/Zi', '/W4', '/WX', '/wd4530', '/wd4100', '/wd4706',
               '/wd4512', '/wd4800', '/wd4702', '/wd4819', '/GR-',
+              # Disable size_t -> int truncation warning.
+              # We never have strings or arrays larger than 2**31.
+              '/wd4267',
               '/DNOMINMAX', '/D_CRT_SECURE_NO_WARNINGS',
               '/DNINJA_PYTHON="%s"' % options.with_python]
     ldflags = ['/DEBUG', '/libpath:$builddir']
diff --git a/src/canon_perftest.cc b/src/canon_perftest.cc
index d0ed397..59bd18f 100644
--- a/src/canon_perftest.cc
+++ b/src/canon_perftest.cc
@@ -27,7 +27,7 @@ int main() {
   string err;
 
   char buf[200];
-  int len = strlen(kPath);
+  size_t len = strlen(kPath);
   strcpy(buf, kPath);
 
   for (int j = 0; j < 5; ++j) {
diff --git a/src/hash_collision_bench.cc b/src/hash_collision_bench.cc
index 6736109..d0eabde 100644
--- a/src/hash_collision_bench.cc
+++ b/src/hash_collision_bench.cc
@@ -14,6 +14,11 @@
 
 #include "build_log.h"
 
+#include <algorithm>
+using namespace std;
+
+#include <time.h>
+
 int random(int low, int high) {
   return int(low + (rand() / double(RAND_MAX)) * (high - low) + 0.5);
 }
@@ -22,7 +27,7 @@ void RandomCommand(char** s) {
   int len = random(5, 100);
   *s = new char[len];
   for (int i = 0; i < len; ++i)
-    (*s)[i] = random(32, 127);
+    (*s)[i] = (char)random(32, 127);
 }
 
 int main() {
@@ -32,7 +37,7 @@ int main() {
   char** commands = new char*[N];
   pair<uint64_t, int>* hashes = new pair<uint64_t, int>[N];
 
-  srand(time(NULL));
+  srand((int)time(NULL));
 
   for (int i = 0; i < N; ++i) {
     RandomCommand(&commands[i]);
diff --git a/src/util_test.cc b/src/util_test.cc
index 5ace5e7..7a34671 100644
--- a/src/util_test.cc
+++ b/src/util_test.cc
@@ -105,18 +105,18 @@ TEST(CanonicalizePath, AbsolutePath) {
 TEST(CanonicalizePath, NotNullTerminated) {
   string path;
   string err;
-  int len;
+  size_t len;
 
   path = "foo/. bar/.";
   len = strlen("foo/.");  // Canonicalize only the part before the space.
   EXPECT_TRUE(CanonicalizePath(&path[0], &len, &err));
-  EXPECT_EQ(strlen("foo"), static_cast<size_t>(len));
+  EXPECT_EQ(strlen("foo"), len);
   EXPECT_EQ("foo/. bar/.", string(path));
 
   path = "foo/../file bar/.";
   len = strlen("foo/../file");
   EXPECT_TRUE(CanonicalizePath(&path[0], &len, &err));
-  EXPECT_EQ(strlen("file"), static_cast<size_t>(len));
+  EXPECT_EQ(strlen("file"), len);
   EXPECT_EQ("file ./file bar/.", string(path));
 }