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

   1 # REQUIRES: x86
   2
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
   4 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux \
   5 # RUN:   %p/Inputs/allow-shlib-undefined.s -o %t1.o
   6 # RUN: ld.lld -shared %t1.o -o %t.so
   7
   8 # RUN: ld.lld --allow-shlib-undefined %t.o %t.so -o /dev/null
   9 # RUN: not ld.lld --no-allow-shlib-undefined %t.o %t.so -o /dev/null 2>&1 | FileCheck %s
  10 # Executable defaults to --no-allow-shlib-undefined
  11 # RUN: not ld.lld %t.o %t.so -o /dev/null 2>&1 | FileCheck %s
  12 # RUN: ld.lld %t.o %t.so --noinhibit-exec -o /dev/null 2>&1 | FileCheck %s --check-prefix=WARN
  13 # RUN: ld.lld %t.o %t.so --warn-unresolved-symbols -o /dev/null 2>&1 | FileCheck %s --check-prefix=WARN
  14 # -shared defaults to --allow-shlib-undefined
  15 # RUN: ld.lld -shared %t.o %t.so -o /dev/null
  16
  17 # RUN: echo | llvm-mc -filetype=obj -triple=x86_64-unknown-linux -o %tempty.o
  18 # RUN: ld.lld -shared %tempty.o -o %tempty.so
  19 # RUN: ld.lld -shared %t1.o %tempty.so -o %t2.so
  20 # RUN: ld.lld --no-allow-shlib-undefined %t.o %t2.so -o /dev/null
  21
  22 # DSO with undefines:
  23 # should link with or without any of these options.
  24 # RUN: ld.lld -shared %t1.o -o /dev/null
  25 # RUN: ld.lld -shared --allow-shlib-undefined %t1.o -o /dev/null
  26 # RUN: ld.lld -shared --no-allow-shlib-undefined %t1.o -o /dev/null
  27
  28 ## Check that the error is reported if an unresolved symbol is first seen in a
  29 ## regular object file.
  30 # RUN: echo 'callq _unresolved@PLT' | \
  31 # RUN:   llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %tref.o
  32 # RUN: not ld.lld --gc-sections %t.o %tref.o %t.so -o /dev/null 2>&1 | FileCheck %s
  33
  34 ## Check that the error is reported for each shared library where the symbol
  35 ## is referenced.
  36 # RUN: cp %t.so %t2.so
  37 # RUN: not ld.lld %t.o %t.so %t2.so -o /dev/null 2>&1 | \
  38 # RUN:   FileCheck %s --check-prefixes=CHECK,CHECK2
  39
  40 ## Test some cases where relocatable object files provide a hidden definition.
  41 # RUN: echo '.globl _unresolved; _unresolved:' | llvm-mc -filetype=obj -triple=x86_64 -o %tdef.o
  42 # RUN: echo '.globl _unresolved; .hidden _unresolved; _unresolved:' | llvm-mc -filetype=obj -triple=x86_64 -o %tdef-hidden.o
  43 # RUN: ld.lld %t.o %t.so %tdef-hidden.o -o /dev/null 2>&1 | count 0
  44
  45 ## The section containing the definition is discarded, and we report an error.
  46 # RUN: not ld.lld --gc-sections %t.o %t.so %tdef-hidden.o -o /dev/null 2>&1 | FileCheck %s
  47 ## The definition %tdef.so is ignored.
  48 # RUN: ld.lld -shared -soname=tdef.so %tdef.o -o %tdef.so
  49 # RUN: not ld.lld --gc-sections %t.o %t.so %tdef.so %tdef-hidden.o -o /dev/null 2>&1 | FileCheck %s
  50
  51 .globl _start
  52 _start:
  53   callq _shared@PLT
  54
  55 # CHECK:       error: undefined reference due to --no-allow-shlib-undefined: _unresolved
  56 # CHECK-NEXT:  >>> referenced by {{.*}}.so
  57 # CHECK2:      error: undefined reference due to --no-allow-shlib-undefined: _unresolved
  58 # CHECK2-NEXT: >>> referenced by {{.*}}2.so
  59 # WARN:        warning: undefined reference due to --no-allow-shlib-undefined: _unresolved
  60 # WARN-NEXT:   >>> referenced by {{.*}}.so