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mark_rts.c (GC_approx_sp): Use __builtin_frame_address when compiling with GCC rather than taking the... 

* mark_rts.c (GC_approx_sp): Use __builtin_frame_address when
	compiling with GCC rather than taking the address of a local
	variable.

From-SVN: r154771
This commit is contained in:
Ben Elliston 2009-11-30 10:19:20 +00:00 committed by Ben Elliston
parent 0761b46075
commit 2fc5ecb5a8
2 changed files with 13 additions and 1 deletions
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6
boehm-gc/ChangeLog
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@ -1,3 +1,9 @@
2009-11-30 Ben Elliston <bje@au.ibm.com>
* mark_rts.c (GC_approx_sp): Use __builtin_frame_address when
compiling with GCC rather than taking the address of a local
variable.
2009-11-30 Ben Elliston <bje@au.ibm.com>
* os_dep.c: Use the POSIX signal API in preference to the BSD API.

6
boehm-gc/mark_rts.c
View File

@ -376,7 +376,13 @@ ptr_t GC_approx_sp()
# ifdef _MSC_VER
# pragma warning(disable:4172)
# endif
#ifdef __GNUC__
/* Eliminate a warning from GCC about taking the address of a
local variable. */
return __builtin_frame_address (0);
#else
return ((ptr_t)(&dummy));
#endif /* __GNUC__ */
# ifdef _MSC_VER
# pragma warning(default:4172)
# endif