base/compiler_specific.h - Issue 1039823002: Add base::LazyInstance

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Unified Diff: base/compiler_specific.h

Issue 1039823002: Add base::LazyInstance (Closed) Base URL: https://chromium.googlesource.com/chromium/mini_chromium@master

Patch Set: Created 5 years, 9 months ago

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Index: base/compiler_specific.h

diff --git a/base/compiler_specific.h b/base/compiler_specific.h

index a6d9520311f5d0b818cefe8b02d06b4fb71f328f..dfef541e29fd6f7cbcc11d3e03892ccbee5b19bb 100644

--- a/base/compiler_specific.h

+++ b/base/compiler_specific.h

@@ -56,6 +56,17 @@

#define ALIGNAS(byte_alignment) __attribute__((aligned(byte_alignment)))

#endif

+// Return the byte alignment of the given type (available at compile time). Use

+// sizeof(type) prior to checking __alignof to workaround Visual C++ bug:

+// http://goo.gl/isH0C

+// Use like:

+// ALIGNOF(int32_t) // this would be 4

+#if defined(COMPILER_MSVC)

+#define ALIGNOF(type) (sizeof(type) - sizeof(type) + __alignof(type))

+#elif defined(COMPILER_GCC)

+#define ALIGNOF(type) __alignof__(type)

+#endif

#if defined(COMPILER_MSVC)

#define WARN_UNUSED_RESULT

#else

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