http://sourceware.org/bugzilla/show_bug.cgi?id=12372
Summary: Segfault with STT_GNU_IFUNC symbols on x86_64
Product: binutils
Version: 2.22 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gold
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Depends on: 12366
+++ This bug was initially created as a clone of Bug #12366 +++
The x86 and x86_64 IFUNC code assumes that check_relocs can rely on def_regular
being set for all regular definitions. That's not true, because def_regular is
set by the same pass that calls check_relocs, and doesn't therefore take into
account regular definitions in later objects. Everything works if the regular
definition comes before the regular use, but not the other way round.
+++
[...@gnu-6 pr12366-1]$ make LD=ld.gold
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o main.o main.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o bar.o bar.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o foo.o foo.c
ld.gold -shared -o libfoo.so bar.o foo.o
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -o main main.o libfoo.so
-Wl,-rpath,.
./main
make: *** [all] Segmentation fault
[...@gnu-6 pr12366-1]$
GNU linker works:
[...@gnu-6 pr12366-1]$ make clean
rm -f a.out *.o *.so
[...@gnu-6 pr12366-1]$ make
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o main.o main.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o bar.o bar.c
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -fPIC -c -o foo.o foo.c
./ld -shared -o libfoo.so bar.o foo.o
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -o main main.o libfoo.so
-Wl,-rpath,.
./main
Hello, world!
[...@gnu-6 pr12366-1]$
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/bug-binutils
