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Use C++11 static_assert() for build asserts. 

llvm-svn: 292350
This commit is contained in:
Jonathan Peyton 2017-01-18 07:49:30 +00:00
parent 7f976d556a
commit 3692fcf665
1 changed files with 2 additions and 21 deletions
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23
openmp/runtime/src/kmp_debug.h
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@ -26,27 +26,8 @@
// Build-time assertion.
// -------------------------------------------------------------------------------------------------
/*
Build-time assertion can do compile-time checking of data structure sizes, etc. This works by
declaring a negative-length array if the conditional expression evaluates to false. In that
case, the compiler issues a syntax error and stops the compilation. If the expression is
true, we get an extraneous static single character array in the scope of the macro.
Usage:
KMP_BUILD_ASSERT( sizeof( some_t ) <= 32 );
KMP_BUILD_ASSERT( offsetof( some_t, field ) % 8 == 0 );
Do not use _KMP_BUILD_ASSERT and __KMP_BUILD_ASSERT directly, it is working guts.
*/
#define __KMP_BUILD_ASSERT( expr, suffix ) typedef char __kmp_build_check_##suffix[ (expr) ? 1 : -1 ]
#define _KMP_BUILD_ASSERT( expr, suffix ) __KMP_BUILD_ASSERT( (expr), suffix )
#ifdef KMP_USE_ASSERT
#define KMP_BUILD_ASSERT( expr ) _KMP_BUILD_ASSERT( (expr), __LINE__ )
#else
#define KMP_BUILD_ASSERT( expr ) /* nothing to do */
#endif
// New C++11 style build assert
#define KMP_BUILD_ASSERT( expr ) static_assert(expr, "Build condition error")
// -------------------------------------------------------------------------------------------------
// Run-time assertions.