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Declare ifunc resolver to return a pointer to the same type as the target

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function to help GCC detect incompatibilities between the two when it's
enhanced to do so.

(cherry picked from commit ee4e992ebe5f9712faedeefe8958b67d61eaa0f2)
This commit is contained in:
Martin Sebor 2017-08-22 09:35:23 -06:00 committed by Florian Weimer
parent 2422c6032f
commit ac6113cb01
2 changed files with 7 additions and 1 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2017-08-22 Martin Sebor <msebor@redhat.com>
* include/libc-symbols.h (__ifunc_resolver): Declare resolver
to return a pointer to the same type as the target function.
2017-08-03 Alan Modra <amodra@gmail.com>
* sysdeps/powerpc/mod-tlsopt-powerpc.c: Extract from

3
include/libc-symbols.h
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@ -782,7 +782,8 @@ for linking")
/* Helper / base macros for indirect function symbols. */
#define __ifunc_resolver(type_name, name, expr, arg, init, classifier) \
classifier inhibit_stack_protector void *name##_ifunc (arg) \
classifier inhibit_stack_protector \
__typeof (type_name) *name##_ifunc (arg) \
{ \
init (); \
__typeof (type_name) *res = expr; \