https://sourceware.org/bugzilla/show_bug.cgi?id=22394
Bug ID: 22394
Summary: hppa-linux-ld fails to emit dynamic relocations on
function pointer initialization
Product: binutils
Version: 2.30 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: amodra at gmail dot com
Target Milestone: ---
gcc -mfast-indirect-calls emits a function pointer initialization without a P%
(plabel) modifier. ld does not create the necessary dynamic relocations for
this to work.
$ cat funcp.c
extern void foo(void);
void (*fp)(void) = foo;
int main()
{
fp();
return 0;
}
$ cat funcpdef.c
void foo(void) {}
$ gcc -shared -o funcpdef.so funcpdef.c
$ gcc -o funcp funcp.c funcpdef.so -Wl,-rpath=.
$ ./funcp
$ gcc -o funcp funcp.c funcpdef.so -Wl,-rpath=. -mfast-indirect-calls
$ ./funcp
Segmentation fault (core dumped)
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