lld/test/ELF/version-script-weak.s

   1 # REQUIRES: x86
   2
   3 ## An weak undefined symbol does not fetch the lazy definition.
   4 ## Version scripts do not affect undefined symbols.
   5
   6 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   7 # RUN: echo '.globl foo; foo:' | llvm-mc -filetype=obj -triple=x86_64 - -o %t1.o
   8 # RUN: echo "{ local: *; };" > %t.script
   9 # RUN: ld.lld -shared --version-script %t.script %t.o --start-lib %t1.o --end-lib -o %t.so
  10 # RUN: llvm-readobj --dyn-syms -r %t.so | FileCheck %s
  11
  12 # CHECK:      Relocations [
  13 # CHECK-NEXT:   Section ({{.*}}) .rela.plt {
  14 # CHECK-NEXT:     R_X86_64_JUMP_SLOT foo
  15 # CHECK-NEXT:   }
  16 # CHECK-NEXT: ]
  17 # CHECK:      Symbol {
  18 # CHECK:        Name: foo
  19 # CHECK-NEXT:   Value: 0x0
  20 # CHECK-NEXT:   Size: 0
  21 # CHECK-NEXT:   Binding: Weak
  22 # CHECK-NEXT:   Type: None
  23 # CHECK-NEXT:   Other: 0
  24 # CHECK-NEXT:   Section: Undefined
  25 # CHECK-NEXT: }
  26
  27 ## The version of an unfetched lazy symbol is VER_NDX_GLOBAL. It is not affected by version scripts.
  28 # RUN: echo "v1 { *; };" > %t2.script
  29 # RUN: ld.lld -shared --version-script %t2.script %t.o --start-lib %t1.o --end-lib -o %t2.so
  30 # RUN: llvm-readelf --dyn-syms %t2.so | FileCheck %s --check-prefix=CHECK2
  31
  32 # CHECK2: NOTYPE WEAK DEFAULT UND foo{{$}}
  33
  34 # RUN: ld.lld -shared --soname=tshared --version-script %t2.script %t1.o -o %tshared.so
  35 # RUN: ld.lld -shared --version-script %t2.script %t.o --start-lib %t1.o --end-lib %tshared.so -o %t3.so
  36 # RUN: llvm-readelf --dyn-syms %t3.so | FileCheck %s --check-prefix=CHECK3
  37
  38 # CHECK3: NOTYPE WEAK DEFAULT UND foo@v1
  39
  40 .text
  41  callq foo@PLT
  42 .weak foo