https://bugs.llvm.org/show_bug.cgi?id=36623
Bug ID: 36623
Summary: llvm doesn't handle @@@ in symbol names at lto time
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: raf...@espindo.la
CC: llvm-bugs@lists.llvm.org, pe...@pcc.me.uk,
tejohn...@google.com
Given
$ cat test.ll
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
module asm ".global foo"
module asm "foo:"
module asm ".symver foo,foo@@@VER1"
llc produces a file with:
0000000000000000 T foo@@VER1
But running llvm-nm on the bitcode shows
---------------- T foo
---------------- T foo@@@VER1
So it looks like we are missing a special case for @@@ in the asm parsing we do
for creating bitcode symbol tables.
This results in LTO failures. Given a test.ver with "VER1 {};", we get:
$ ld.lld -shared test.o -o t.so --version-script test.ver
(no errors)
but
$ ld.lld: error: duplicate symbol: foo@@@VER1
>>> defined in test.bc
>>> defined in test.bc
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