nobu	2015-12-01 10:05:48 +0900 (Tue, 01 Dec 2015)

  New Revision: 52823

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=52823

  Log:
    configure.in: FUNC_UNOPTIMIZED
    
    * configure.in: check if optimize pragma is supported.
    
    * include/ruby/defines.h (FUNC_UNOPTIMIZED): fallback definition.

  Modified files:
    trunk/configure.in
    trunk/include/ruby/defines.h
    trunk/missing/explicit_bzero.c
Index: include/ruby/defines.h
===================================================================
--- include/ruby/defines.h	(revision 52822)
+++ include/ruby/defines.h	(revision 52823)
@@ -244,6 +244,9 @@ void rb_ia64_flushrs(void); https://github.com/ruby/ruby/blob/trunk/include/ruby/defines.h#L244
 #ifndef FUNC_MINIMIZED
 #define FUNC_MINIMIZED(x) x
 #endif
+#ifndef FUNC_UNOPTIMIZED
+#define FUNC_UNOPTIMIZED(x) x
+#endif
 #ifndef RUBY_ALIAS_FUNCTION_TYPE
 #define RUBY_ALIAS_FUNCTION_TYPE(type, prot, name, args) \
     FUNC_MINIMIZED(type prot) {return (type)name args;}
Index: configure.in
===================================================================
--- configure.in	(revision 52822)
+++ configure.in	(revision 52823)
@@ -1757,6 +1757,7 @@ if_i386=${universal_binary+[defined __i3 https://github.com/ruby/ruby/blob/trunk/configure.in#L1757
 RUBY_FUNC_ATTRIBUTE(stdcall,  [], [], ${if_i386})
 RUBY_FUNC_ATTRIBUTE(cdecl,    [], [], ${if_i386})
 RUBY_FUNC_ATTRIBUTE(fastcall, [], [], ${if_i386})
+RUBY_FUNC_ATTRIBUTE(optimize("O0"), FUNC_UNOPTIMIZED, rb_cv_func_unoptimized)
 RUBY_FUNC_ATTRIBUTE(optimize("-Os","-fomit-frame-pointer"), FUNC_MINIMIZED, rb_cv_func_minimized)
 
 if test "$GCC" = yes; then
Index: missing/explicit_bzero.c
===================================================================
--- missing/explicit_bzero.c	(revision 52822)
+++ missing/explicit_bzero.c	(revision 52823)
@@ -12,13 +12,15 @@ https://github.com/ruby/ruby/blob/trunk/missing/explicit_bzero.c#L12
  * http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1381.pdf
  */
 
-#ifdef __GNUC__
-#pragma GCC optimize ("O0")
+#ifndef FUNC_UNOPTIMIZED
+# define FUNC_UNOPTIMIZED(x) x
 #endif
 
 #ifndef HAVE_EXPLICIT_BZERO
 /* Similar to bzero(), but have a guarantee not to be eliminated from compiler
    optimization. */
+FUNC_UNOPTIMIZED(void explicit_bzero(void *b, size_t len));
+
 void
 explicit_bzero(void *b, size_t len)
 {

--
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