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thread.c: fix for older gcc

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* thread.c (only_if_constant): get rid of __builtin_choose_expr()
  on older gcc.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47868 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-10-10 14:31:37 +00:00
parent 97d3b04c9b
commit adfce27ee0
1 changed files with 1 additions and 1 deletions
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2
thread.c
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@ -145,7 +145,7 @@ static inline void blocking_region_end(rb_thread_t *th, struct rb_blocking_regio
} while(0)
#ifdef __GNUC__
#ifdef HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR
#ifdef HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P
#define only_if_constant(expr, notconst) __builtin_choose_expr(__builtin_constant_p(expr), (expr), (notconst))
#else
#define only_if_constant(expr, notconst) (__builtin_constant_p(expr) ? (expr) : (notconst))