Question

尝试使用未定义的行为检查器

编译带有clang 3.5的C ++源文件

 clang++-3.5 -std=c++11 -fsanitize=undefined main.cpp

我在链接时遇到以下错误：

Undefined symbols for architecture x86_64:
  "typeinfo for __cxxabiv1::__class_type_info", referenced from:
      __ubsan::checkDynamicType(void*, void*, unsigned long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
      isDerivedFromAtOffset(__cxxabiv1::__class_type_info const*, __cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
      findBaseAtOffset(__cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
  "typeinfo for __cxxabiv1::__si_class_type_info", referenced from:
      isDerivedFromAtOffset(__cxxabiv1::__class_type_info const*, __cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
      findBaseAtOffset(__cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
  "typeinfo for __cxxabiv1::__vmi_class_type_info", referenced from:
      isDerivedFromAtOffset(__cxxabiv1::__class_type_info const*, __cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
      findBaseAtOffset(__cxxabiv1::__class_type_info const*, long) in libclang_rt.ubsan_osx.a(ubsan_type_hash.o)
ld: symbol(s) not found for architecture x86_64

我是否需要链接其他库？

Answer 1

您似乎缺少libc++abi。尝试添加

-lc++abi

到您的链接命令。

Clang undefined行为检查器链接错误

1 个答案: