lld/test/ELF/gc-sections-startstop-hint.s

   1 # REQUIRES: x86
   2 ## Some projects may not work with GNU ld<2015-10 (ld.lld 13.0.0) --gc-sections behavior.
   3 ## Give a hint.
   4
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   6 # RUN: ld.lld %t.o -o /dev/null
   7 # RUN: ld.lld %t.o --gc-sections -z nostart-stop-gc -o /dev/null
   8 # RUN: not ld.lld %t.o --gc-sections -o /dev/null 2>&1 | FileCheck %s
   9
  10 # CHECK:      error: undefined symbol: __start_meta
  11 # CHECK-NEXT: >>> referenced by {{.*}}
  12 # CHECK-NEXT: >>> the encapsulation symbol needs to be retained under --gc-sections properly; consider -z nostart-stop-gc (see https://lld.llvm.org/ELF/start-stop-gc)
  13
  14 .section .text,"ax",@progbits
  15 .global _start
  16 _start:
  17   .quad __start_meta - .
  18   .quad __stop_meta - .
  19
  20 .section meta,"aw",@progbits
  21 .quad 0