https://bugs.llvm.org/show_bug.cgi?id=34012
Bug ID: 34012
Summary: --no-undefined-version fails with version aliases
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: ELF
Assignee: unassignedb...@nondot.org
Reporter: smee...@fb.com
CC: compn...@compnerd.org, gri...@accesssoftek.com,
llvm-bugs@lists.llvm.org, rafael.espind...@gmail.com,
r...@google.com
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: echo "V1 { global: f; local: *; };" > %t.script
# RUN: ld.lld -shared --version-script %t.script --no-undefined-version %t.o \
# RUN: -o %t.so
.global _f
_f:
retq
.symver _f, f@V1
The above fails with
error: version script assignment of 'V1' to symbol 'f' failed: symbol not
defined
We attempt to look up f in the symbol table. However, the symbol table actually
contains f@V1, so the lookup fails.
I'm not 100% sure my version script (marking a symbol as global when it already
has a .symver) is valid, but both bfd and gold are happy with it. Additionally,
bfd actually needs the global: f to export the symbol even with the .symver;
gold and lld export it without.
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