nathanchance added a comment.
I suspect this is the same issue but our CI pointed out another instance of
this error in some x86 code
(https://storage.tuxsuite.com/public/clangbuiltlinux/continuous-integration2/builds/2SW8BY7moEweMJC6DJpzidlGYt8/build.log),
which does not appear to use local labels with the same name, but rather
unique label names. `cvise` spits out:
void emulator_cmpxchg_emulated() {
int __ret = ({
asm goto(" .pushsection \"__ex_table\",\"a\"\n"
" .popsection\n"
:
:
:
: efaultu16);
__ret;
});
efaultu16:
({
asm goto(" .pushsection \"__ex_table\",\"a\"\n"
" .popsection\n"
:
:
:
: efaultu32);
efaultu32:;
});
}
$ clang -fsyntax-only x86.i
x86.i:3:5: error: cannot jump from this asm goto statement to one of its
possible targets
3 | asm goto(" .pushsection \"__ex_table\",\"a\"\n"
| ^
x86.i:19:3: note: possible target of asm goto statement
19 | efaultu32:;
| ^
x86.i:12:3: note: jump enters a statement expression
12 | ({
| ^
1 error generated.
which certainly seems bogus to me.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D154696/new/
https://reviews.llvm.org/D154696
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