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llvm-project/lld/test/ELF/weak-undef.s

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ELF: Simplify preemption logic. Do not include weak undefined symbols in non-DSOs. Add a test for -Bsymbolic + undefined symbols. llvm-svn: 267323
2016-04-24 12:29:59 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t -pie
# RUN: llvm-readobj -dyn-symbols %t | FileCheck %s
# CHECK: DynamicSymbols [
# CHECK-NEXT: Symbol {
Remove string table offsets from tests. <N> where "foo (<N>)" is the offset of string "foo" in the string table. llvm-svn: 285751
2016-11-02 05:26:28 +08:00
# CHECK-NEXT: Name: @
ELF: Simplify preemption logic. Do not include weak undefined symbols in non-DSOs. Add a test for -Bsymbolic + undefined symbols. llvm-svn: 267323
2016-04-24 12:29:59 +08:00
# CHECK-NEXT: Value: 0x0
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Binding: Local (0x0)
# CHECK-NEXT: Type: None (0x0)
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: Undefined (0x0)
# CHECK-NEXT: }
Keep some relocations with undefined weak symbols. This fixes pr34301. As the bug points out, we want to keep some relocations with undefined weak symbols. This means that we cannot always claim that these symbols are not preemptible as we do now. Unfortunately, we cannot also just always claim that they are preemptible. Doing so would, for example, cause us to try to create a plt entry when we don't even have a dynamic symbol table. What almost works is to say that weak undefined symbols are preemptible if and only if we have a dynamic symbol table. Almost because we don't want to fail the build trying to create a copy relocation to a weak undefined. llvm-svn: 313372
2017-09-16 02:05:02 +08:00
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: foo@
# CHECK-NEXT: Value: 0x0
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Binding: Weak
# CHECK-NEXT: Type: None
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: Undefined
# CHECK-NEXT: }
ELF: Simplify preemption logic. Do not include weak undefined symbols in non-DSOs. Add a test for -Bsymbolic + undefined symbols. llvm-svn: 267323
2016-04-24 12:29:59 +08:00
# CHECK-NEXT: ]
.weak foo
.globl _start
_start:
[ELF] Make tests with undefined symbols more explicit. Differential Revision: https://reviews.llvm.org/D40253 llvm-svn: 318939
2017-11-24 14:42:32 +08:00
.data
.dc.a foo