common: stack trace: make clang happy with func ptrs
Tested that it builds with: gcc 6.1.1, STATIC=OFF,i686 gcc 6.1.1, STATIC=OFF,armv7h clang 3.8, STATIC=OFF,i686 clang 3.8, STATIC=OFF,armv7h gcc 6.1.1, STATIC=ON,i686 clang 3.8, STATIC=ON,i686 Also tested that stack trace is generated fine on exception on: i686, gcc 6.1.1, STATIC=OFF (didn't bother testing all the other platforms/configs) This should fix the build problem on OSX (#871, #901), but I don't have OSX, so I could only test Clang on Linux.
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1 changed files with 29 additions and 9 deletions
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@ -38,14 +38,33 @@
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#endif
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// from http://stackoverflow.com/questions/11665829/how-can-i-print-stack-trace-for-caught-exceptions-in-c-code-injection-in-c
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// The decl of __cxa_throw in /usr/include/.../cxxabi.h uses
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// 'std::type_info *', but GCC's built-in protype uses 'void *'.
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#ifdef __clang__
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#define CXA_THROW_INFO_T std::type_info
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#else // !__clang__
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#define CXA_THROW_INFO_T void
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#endif // !__clang__
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#ifdef STATICLIB
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#define CXA_THROW __wrap___cxa_throw
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extern "C" void __real___cxa_throw(void *ex, void *info, void (*dest)(void*));
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#else
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extern "C"
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__attribute__((noreturn))
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void __real___cxa_throw(void *ex, CXA_THROW_INFO_T *info, void (*dest)(void*));
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#else // !STATICLIB
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#define CXA_THROW __cxa_throw
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#endif
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extern "C"
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typedef
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#ifdef __clang__ // only clang, not GCC, lets apply the attr in typedef
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__attribute__((noreturn))
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#endif // __clang__
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void (cxa_throw_t)(void *ex, CXA_THROW_INFO_T *info, void (*dest)(void*));
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#endif // !STATICLIB
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extern "C" void CXA_THROW(void *ex, void *info, void (*dest)(void*))
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extern "C"
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__attribute__((noreturn))
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void CXA_THROW(void *ex, CXA_THROW_INFO_T *info, void (*dest)(void*))
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{
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int status;
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@ -53,12 +72,13 @@ extern "C" void CXA_THROW(void *ex, void *info, void (*dest)(void*))
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tools::log_stack_trace((std::string("Exception: ")+((!status && dsym) ? dsym : (const char*)info)).c_str());
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free(dsym);
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#ifdef STATICLIB
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#ifndef STATICLIB
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#ifndef __clang__ // for GCC the attr can't be applied in typedef like for clang
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__attribute__((noreturn))
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#endif // !__clang__
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cxa_throw_t *__real___cxa_throw = (cxa_throw_t*)dlsym(RTLD_NEXT, "__cxa_throw");
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#endif // !STATICLIB
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__real___cxa_throw(ex, info, dest);
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#else
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static void (*const rethrow)(void*, void*, void(*)(void*)) __attribute__((noreturn)) = (void(*)(void*, void*, void(*)(void*)))dlsym(RTLD_NEXT, "__cxa_throw");
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rethrow(ex, info, dest);
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#endif
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}
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namespace
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