lld/test/ELF/allow-shlib-undefined-weak.s

   1 # REQUIRES: x86
   2
   3 # RUN: rm -rf %t.dir
   4 # RUN: split-file %s %t.dir
   5 # RUN: cd %t.dir
   6
   7 ## Verify that in the following case:
   8 ##
   9 ##   <exec>
  10 ##   +- ref.so (weak reference to foo)
  11 ##   +- wrap.so (non-weak reference to foo)
  12 ##      +- def.so (defines foo)
  13 ##
  14 ## we don't report that foo is undefined in ref.so when linking <exec>.
  15
  16 # RUN: llvm-mc -filetype=obj -triple=x86_64 ref.s -o ref.o
  17 # RUN: llvm-mc -filetype=obj -triple=x86_64 wrap.s -o wrap.o
  18 # RUN: llvm-mc -filetype=obj -triple=x86_64 def.s -o def.o
  19 # RUN: ld.lld -shared ref.o -o ref.so
  20 # RUN: ld.lld -shared def.o -soname def.so -o def.so
  21 # RUN: ld.lld -shared wrap.o def.so -o wrap.so
  22
  23 # RUN: llvm-mc -filetype=obj -triple=x86_64 start.s -o start.o
  24 # RUN: ld.lld --no-allow-shlib-undefined start.o wrap.so ref.so -o /dev/null 2>&1 | count 0
  25
  26 #--- start.s
  27 .globl _start
  28 _start:
  29   callq wrap_get_foo@PLT
  30
  31 #--- ref.s
  32 .weak foo
  33 .globl ref_get_foo
  34 ref_get_foo:
  35   movq foo@GOTPCREL(%rip), %rax
  36   retq
  37
  38 #--- wrap.s
  39 .globl wrap_get_foo
  40 wrap_get_foo:
  41   movq foo@GOTPCREL(%rip), %rax
  42   retq
  43
  44 #--- def.s
  45 .data
  46 .globl foo
  47 foo:
  48   .long 0