lld/test/ELF/undefined-opt.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux \
   4 # RUN:     %p/Inputs/abs.s -o %tabs.o
   5 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux \
   6 # RUN:     %p/Inputs/shared.s -o %tshared.o
   7 # RUN: rm -f %tar.a
   8 # RUN: llvm-ar rcs %tar.a %tabs.o %tshared.o
   9
  10 # Symbols from the archive are not in if not needed
  11 # RUN: ld.lld -o %t1 %t.o %tar.a
  12 # RUN: llvm-readobj --symbols %t1 | FileCheck --check-prefix=NO-UNDEFINED %s
  13 # NO-UNDEFINED: Symbols [
  14 # NO-UNDEFINED-NOT: Name: abs
  15 # NO-UNDEFINED-NOT: Name: big
  16 # NO-UNDEFINED-NOT: Name: bar
  17 # NO-UNDEFINED-NOT: Name: zed
  18 # NO-UNDEFINED: ]
  19
  20 # Symbols from the archive are in if needed, but only from the
  21 # containing object file
  22 # RUN: ld.lld -o %t2 %t.o %tar.a -u bar
  23 # RUN: llvm-readobj --symbols %t2 | FileCheck --check-prefix=ONE-UNDEFINED %s
  24 # ONE-UNDEFINED: Symbols [
  25 # ONE-UNDEFINED-NOT: Name: abs
  26 # ONE-UNDEFINED-NOT: Name: big
  27 # ONE-UNDEFINED: Name: bar
  28 # ONE-UNDEFINED: Name: zed
  29 # ONE-UNDEFINED: ]
  30
  31 # Use the option couple of times, both short and long forms
  32 # RUN: ld.lld -o %t3 %t.o %tar.a -u bar --undefined=abs
  33 # RUN: llvm-readobj --symbols %t3 | FileCheck --check-prefix=TWO-UNDEFINED %s
  34 # RUN: ld.lld -o %t3 %t.o %tar.a -u bar --undefined abs
  35 # RUN: llvm-readobj --symbols %t3 | FileCheck --check-prefix=TWO-UNDEFINED %s
  36 # TWO-UNDEFINED: Symbols [
  37 # TWO-UNDEFINED: Name: abs
  38 # TWO-UNDEFINED: Name: big
  39 # TWO-UNDEFINED: Name: bar
  40 # TWO-UNDEFINED: Name: zed
  41 # TWO-UNDEFINED: ]
  42 # Now the same logic but linker script is used to set undefines
  43 # RUN: echo "EXTERN( bar \"abs\" )" > %t.script
  44 # RUN: ld.lld -o %t3 %t.o %tar.a %t.script
  45 # RUN: llvm-readobj --symbols %t3 | FileCheck --check-prefix=TWO-UNDEFINED %s
  46
  47 # Added undefined symbol may be left undefined without error, but
  48 # shouldn't show up in the dynamic table.
  49 # RUN: ld.lld -shared -o %t4 %t.o %tar.a -u unknown
  50 # RUN: llvm-readobj --dyn-symbols %t4 | \
  51 # RUN:     FileCheck --check-prefix=UNK-UNDEFINED-SO %s
  52 # UNK-UNDEFINED-SO: DynamicSymbols [
  53 # UNK-UNDEFINED-SO-NOT:     Name: unknown
  54 # UNK-UNDEFINED-SO: ]
  55
  56 # Added undefined symbols should appear in the dynamic table if necessary.
  57 # RUN: ld.lld -shared -soname=t -o %t.so %t.o -u export
  58 # RUN: llvm-readobj --dyn-symbols %t.so | \
  59 # RUN:     FileCheck --check-prefix=EXPORT-SO %s
  60 # EXPORT-SO: DynamicSymbols [
  61 # EXPORT-SO:   Name: export
  62 # EXPORT-SO: ]
  63
  64 ## Test that we handle -u before input files: if we handle -u after
  65 ## %t.so, foo would be undefined in the output.
  66 # RUN: rm -f %t.a && llvm-ar rc %t.a %t.o
  67 # RUN: ld.lld -u export %t.a %t.so -o %t5
  68 # RUN: llvm-readobj --dyn-symbols %t5 | FileCheck --check-prefix=EXPORT-SO %s
  69
  70 .globl _start
  71 _start:
  72
  73 .globl export
  74 export: