1 //===-- sanitizer_symbolizer_itanium.cc -----------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is shared between the sanitizer run-time libraries. 11 // Itanium C++ ABI-specific implementation of symbolizer parts. 12 //===----------------------------------------------------------------------===// 13 #if defined(__APPLE__) || defined(__linux__) 14 15 #include "sanitizer_symbolizer.h" 16 17 #include <stdlib.h> 18 19 // C++ demangling function, as required by Itanium C++ ABI. This is weak, 20 // because we do not require a C++ ABI library to be linked to a program 21 // using sanitizers; if it's not present, we'll just use the mangled name. 22 namespace __cxxabiv1 { 23 extern "C" char *__cxa_demangle(const char *mangled, char *buffer, 24 size_t *length, int *status) 25 SANITIZER_WEAK_ATTRIBUTE; 26 } 27 28 const char *__sanitizer::Demangle(const char *MangledName) { 29 // FIXME: __cxa_demangle aggressively insists on allocating memory. 30 // There's not much we can do about that, short of providing our 31 // own demangler (libc++abi's implementation could be adapted so that 32 // it does not allocate). For now, we just call it anyway, and we leak 33 // the returned value. 34 if (__cxxabiv1::__cxa_demangle) 35 if (const char *Demangled = 36 __cxxabiv1::__cxa_demangle(MangledName, 0, 0, 0)) 37 return Demangled; 38 39 return MangledName; 40 } 41 42 #endif // __APPLE__ || __linux__ 43
