[llvm-bugs] [Bug 31476] New: LLD failed to link symbols with "protected" visibility

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31476

            Bug ID: 31476
           Summary: LLD failed to link symbols with "protected" visibility
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: mail+llvm at tzik.jp
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

On ToT LLD, I hit a link error when I try to use protected symbol in a .so from
an elf binary.
Here is a repro:

$ cat > foo.c <<EOF
void foo() {}
EOF
$ clang -shared -fPIC -fvisibility=protected -o libfoo.so foo.c
$ cat > bar.c <<EOF
void foo();

int main() {
  foo();
  return 0;
}
EOF
$ clang -fuse-ld=lld bar.c libfoo.so
ld.lld: error: bar.c:(function main): cannot preempt symbol 'foo' defined in
libfoo.so

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