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On elf, undefined symbols can start with .L.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114958 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2010-09-28 16:19:11 +00:00
parent c577c271b1
commit 53725bc57a
2 changed files with 19 additions and 1 deletions
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5
lib/MC/ELFObjectWriter.cpp
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@@ -689,12 +689,15 @@ void ELFObjectWriterImpl::ComputeSymbolTable(MCAssembler &Asm) {
const MCSymbol &Symbol = it->getSymbol(); const MCSymbol &Symbol = it->getSymbol();
// Ignore non-linker visible symbols. // Ignore non-linker visible symbols.
if (!Asm.isSymbolLinkerVisible(Symbol)) if (!Asm.isSymbolLinkerVisible(Symbol) && !Symbol.isUndefined())
continue; continue;
if (!it->isExternal() && !Symbol.isUndefined()) if (!it->isExternal() && !Symbol.isUndefined())
continue; continue;
if (Symbol.isVariable())
continue;
uint64_t &Entry = StringIndexMap[Symbol.getName()]; uint64_t &Entry = StringIndexMap[Symbol.getName()];
if (!Entry) { if (!Entry) {
Entry = StringTable.size(); Entry = StringTable.size();

15
test/MC/ELF/undef.s Normal file
View File

@@ -0,0 +1,15 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump | FileCheck %s
// Test that there is an undefined reference to .Lset0, but not .Lset1
.long .Lset0
foo:
bar:
.Lset1 = foo - bar
.long .Lset1
// CHECK: ('_symbols', [
// CHECK-NOT: Lset1
// CHECK: (('st_name', 9) # '.Lset0'
// CHECK-NOT: Lset1
// CHECK: (('sh_name', 36) # '.strtab'