lld/test/ELF/comdat-binding2.s

   1 # REQUIRES: x86
   2 ## Test we don't report duplicate definition errors when mixing Clang STB_WEAK
   3 ## and GCC STB_GNU_UNIQUE symbols.
   4
   5 # RUN: rm -rf %t && split-file %s %t && cd %t
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 weak.s -o weak.o
   7 # RUN: llvm-mc -filetype=obj -triple=x86_64 unique.s -o unique.o
   8 # RUN: ld.lld weak.o unique.o -o weak
   9 # RUN: llvm-readelf -s weak | FileCheck %s --check-prefix=WEAK
  10 # RUN: ld.lld unique.o weak.o -o unique
  11 # RUN: llvm-readelf -s unique | FileCheck %s --check-prefix=UNIQUE
  12
  13 # WEAK:   OBJECT  WEAK   DEFAULT [[#]] _ZN1BIiE1aE
  14 # UNIQUE: OBJECT  UNIQUE DEFAULT [[#]] _ZN1BIiE1aE
  15
  16 #--- weak.s
  17 ## Clang
  18         .type   _ZN1BIiE1aE,@object
  19         .section        .bss._ZN1BIiE1aE,"aGwR",@nobits,_ZN1BIiE1aE,comdat
  20         .weak   _ZN1BIiE1aE
  21 _ZN1BIiE1aE:
  22         .zero   4
  23
  24         .type   _ZGVN1BIiE1aE,@object
  25         .section        .bss._ZGVN1BIiE1aE,"aGw",@nobits,_ZN1BIiE1aE,comdat
  26         .weak   _ZGVN1BIiE1aE
  27 _ZGVN1BIiE1aE:
  28         .quad   0
  29
  30 #--- unique.s
  31 ## GCC -fgnu-unique. Note the different group signature for the second group.
  32         .weak   _ZN1BIiE1aE
  33         .section        .bss._ZN1BIiE1aE,"awG",@nobits,_ZN1BIiE1aE,comdat
  34         .type   _ZN1BIiE1aE, @gnu_unique_object
  35 _ZN1BIiE1aE:
  36         .zero   4
  37
  38         .weak   _ZGVN1BIiE1aE
  39         .section        .bss._ZGVN1BIiE1aE,"awG",@nobits,_ZGVN1BIiE1aE,comdat
  40         .type   _ZGVN1BIiE1aE, @gnu_unique_object
  41 _ZGVN1BIiE1aE:
  42         .zero   8