http://sourceware.org/bugzilla/show_bug.cgi?id=12694
Summary: Local IFUNC symbol causes TEXTREL
Product: binutils
Version: 2.22 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassig...@sources.redhat.com
ReportedBy: hjl.to...@gmail.com
[hjl@gnu-6 ifunc-textrel]$ make clean
rm -f *.o *.so
[hjl@gnu-6 ifunc-textrel]$ cat foo.c
static int
zero (int x)
{
return 0;
}
void * foo_ifunc (void) __asm__ ("foo");
void * foo_ifunc (void) { return zero; }
__asm__(".type foo, %gnu_indirect_function");
[hjl@gnu-6 ifunc-textrel]$ cat bar.c
extern int foo (void) __attribute__ ((visibility ("hidden")));
int
bar (void)
{
return foo ();
}
int
bar2 ()
{
return foo () + 3;
}
[hjl@gnu-6 ifunc-textrel]$ make
gcc -m32 -O2 -fPIC -c -o bar.o bar.c
gcc -m32 -O2 -fPIC -c -o foo.o foo.c
./ld -m elf_i386 -z nocombreloc -shared -o libfoo.so bar.o foo.o
--version-script=libfoo.map
readelf -d libfoo.so | grep TEXTREL
0x00000016 (TEXTREL) 0x0
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