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| author | Henrique Nakashima <hnakashima@chromium.org> | 2018-01-24 22:05:20 +0000 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2018-01-24 22:05:20 +0000 |
| commit | f9f1a5dd73b918d50bcd3a4b461b87544260b9f8 (patch) | |
| tree | b02afd5cf2d1429334f83f7718c8c27f2769339a /third_party/base/numerics/safe_math_impl.h | |
| parent | 6daeb04d3f61378d46d2543573d87e587dd9e544 (diff) | |
| download | pdfium-f9f1a5dd73b918d50bcd3a4b461b87544260b9f8.tar.xz | |
Support compiling pdfium with emscripten.
Bug: chromium:804907
Change-Id: I3562653fbc26d669d1e0a99894a69da032a0349e
Reviewed-on: https://pdfium-review.googlesource.com/23810
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Diffstat (limited to 'third_party/base/numerics/safe_math_impl.h')
| -rw-r--r-- | third_party/base/numerics/safe_math_impl.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/third_party/base/numerics/safe_math_impl.h b/third_party/base/numerics/safe_math_impl.h index 4bcc67188c..61f18d2b2a 100644 --- a/third_party/base/numerics/safe_math_impl.h +++ b/third_party/base/numerics/safe_math_impl.h @@ -44,7 +44,11 @@ struct UnsignedOrFloatForSize<Numeric, false, true> { }; // Probe for builtin math overflow support on Clang and version check on GCC. -#if defined(__has_builtin) +#if defined(EMSCRIPTEN) +// Emscripten Clang reports that it has the builtins, it may be lowered to an +// instruction that is unsupported in asm.js +#define USE_OVERFLOW_BUILTINS (0) +#elif defined(__has_builtin) #define USE_OVERFLOW_BUILTINS (__has_builtin(__builtin_add_overflow)) #elif defined(__GNUC__) #define USE_OVERFLOW_BUILTINS (__GNUC__ >= 5) |