https://sourceware.org/bugzilla/show_bug.cgi?id=24218
Bug ID: 24218
Summary: [2.32 Regression] ld.bfd fails to link shared library
built by clang (x86_64)
Product: binutils
Version: 2.32
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: doko at debian dot org
Target Milestone: ---
seen when using ld.bfd 2.32 with clang 7 or 8, works with GCC:
# Segfault https://bugs.llvm.org/show_bug.cgi?id=26580
echo '
extern int a;
extern void bar (void);
int main() {
bar ();
if (a != 30)
__builtin_abort();
return 0;
}' > x.c
echo 'int a;
__attribute__((visibility("protected"))) int a;
void bar () {
a = 30;
}
' > bar.c
# reported in https://bugs.llvm.org/show_bug.cgi?id=26580#c18
if [ $DEB_HOST_ARCH != "i386" ]; then
clang-$VERSION -O3 -c -o x.o x.c
clang-$VERSION -O3 -fpic -c -o bar.o bar.c
clang-$VERSION -fuse-ld=bfd -shared -o libfoo.so bar.o
clang-$VERSION -fuse-ld=bfd -o y x.o libfoo.so -Wl,-R,.
# Still failing, commenting
./y || true
fi
/usr/bin/ld.bfd: bar.o: relocation R_X86_64_PC32 against protected symbol `a'
can not be used when making a shared object
/usr/bin/ld.bfd: final link failed: nonrepresentable section on output
clang: error: linker command failed with exit code 1 (use -v to see invocation)
The failing command is:
clang-$VERSION -fuse-ld=bfd -shared -o libfoo.so bar.o
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