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unwind: remove a second instance of -Wexpansion-to-defined 

Remove the use of undefined behaviour in the c preprocessor by always defining
the value according to the state that was being checked.  NFC.

llvm-svn: 266916
This commit is contained in:
Saleem Abdulrasool 2016-04-20 20:54:55 +00:00
parent 87bd085e88
commit a0ec6a58f5
1 changed files with 8 additions and 5 deletions
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13
libunwind/src/config.h
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@ -86,11 +86,14 @@
#endif
#endif
#define _LIBUNWIND_BUILD_ZERO_COST_APIS \
(defined(__i386__) || defined(__x86_64__) || \
(!defined(__APPLE__) && defined(__arm__)) || \
(defined(__arm64__) || defined(__aarch64__)) || \
(defined(__APPLE__) && defined(__mips__)))
#if defined(__i386__) || defined(__x86_64__) || \
(!defined(__APPLE__) && defined(__arm__)) || \
(defined(__arm64__) || defined(__aarch64__)) || \
(defined(__APPLE__) && defined(__mips__))
#define _LIBUNWIND_BUILD_ZERO_COST_APIS 1
#else
#define _LIBUNWIND_BUILD_ZERO_COST_APIS 0
#endif
// Macros that define away in non-Debug builds
#ifdef NDEBUG