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Always load function pointer into a stack variable

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This patch makes sure that compiler won't optimize out loading function
into a stack variable.

	* ld-ifunc/ifunc-main.c (get_bar): New function.
	(main): Use it.
This commit is contained in:
H.J. Lu 2014-11-20 11:29:45 -08:00
parent 5f7cbeec7d
commit 731885c1ad
2 changed files with 16 additions and 2 deletions
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5
ld/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2014-11-20 H.J. Lu <hongjiu.lu@intel.com>
* ld-ifunc/ifunc-main.c (get_bar): New function.
(main): Use it.
2014-11-20 H.J. Lu <hongjiu.lu@intel.com>
* ld-ifunc/ifunc.exp: Run ifunc-main.

13
ld/testsuite/ld-ifunc/ifunc-main.c
View File

@ -3,12 +3,21 @@
extern int foo(void);
extern int bar(void);
int (*foo_ptr)(void) = foo;
typedef int (*func_p) (void);
func_p foo_ptr = foo;
func_p
__attribute__((noinline))
get_bar (void)
{
return bar;
}
int
main (void)
{
int (*bar_ptr)(void) = bar;
func_p bar_ptr = get_bar ();
if (bar_ptr != bar)
__builtin_abort ();
if (bar_ptr() != -1)