llvm-project/lld/test/ELF/linkerscript/discard-section.s

# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: echo "SECTIONS { /DISCARD/ : { *(.aaa*) } }" > %t.script
# RUN: ld.lld -o %t1 --script %t.script %t
# RUN: llvm-objdump --section-headers %t1 | FileCheck %s

# CHECK-NOT: .aaa

.section .aaa,"a"
aab:
  .quad 0

.section .zzz,"a"
  .quad aab
Linker script: fix crash when discarding section If section contains local symbols ldd crashes, because local symbols are added to symbol table before section is discarded by linker script processor. This patch calls copyLocalSymbols() after createSections, so discarded section symbols are not copied llvm-svn: 282244 2016-09-23 21:17:16 +08:00			`# REQUIRES: x86`
			`# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t`
			`# RUN: echo "SECTIONS { /DISCARD/ : { (.aaa) } }" > %t.script`
Alternative fix for reloc tareting discarded section r283984 introduced a problem of too many warning messages being shown when -ffunction-sections and -fdata-sections were used in conjunction with --gc-sections linker flag and debugging information present. This happens because lot of relocations from .debug_line section may become invalid in such case. The newer fix doesn't show any warning message but zeroes OutSec pointer in createInputSectionList() to avoid crash, when relocations are written llvm-svn: 284010 2016-10-12 20:31:34 +08:00			`# RUN: ld.lld -o %t1 --script %t.script %t`
[test] lld/test/: change llvm-objdump single-dash long options to double-dash options 2020-03-16 08:47:44 +08:00			`# RUN: llvm-objdump --section-headers %t1 \| FileCheck %s`
Don't crash if reloc targets discarded section Differential revision: https://reviews.llvm.org/D25433 llvm-svn: 283984 2016-10-12 16:19:30 +08:00
Linker script: fix crash when discarding section If section contains local symbols ldd crashes, because local symbols are added to symbol table before section is discarded by linker script processor. This patch calls copyLocalSymbols() after createSections, so discarded section symbols are not copied llvm-svn: 282244 2016-09-23 21:17:16 +08:00			`# CHECK-NOT: .aaa`

			`.section .aaa,"a"`
Don't crash if reloc targets discarded section Differential revision: https://reviews.llvm.org/D25433 llvm-svn: 283984 2016-10-12 16:19:30 +08:00			`aab:`
Linker script: fix crash when discarding section If section contains local symbols ldd crashes, because local symbols are added to symbol table before section is discarded by linker script processor. This patch calls copyLocalSymbols() after createSections, so discarded section symbols are not copied llvm-svn: 282244 2016-09-23 21:17:16 +08:00			`.quad 0`
Don't crash if reloc targets discarded section Differential revision: https://reviews.llvm.org/D25433 llvm-svn: 283984 2016-10-12 16:19:30 +08:00
			`.section .zzz,"a"`
			`.quad aab`