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bdash/dladdr-lambda-test.mm

Created October 20, 2015 19:30
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  1. bdash created this gist Oct 20, 2015.
    42 changes: 42 additions & 0 deletions dladdr-lambda-test.mm
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,42 @@
    // c++ -framework Foundation -std=c++14 -o dladdr-lambda-test dladdr-lambda-test.mm

    #import <Foundation/Foundation.h>
    #include <cxxabi.h>
    #include <dlfcn.h>
    #include <execinfo.h>

    @interface MyObject : NSObject
    @end

    @implementation MyObject

    + (void)doStuff
    {
    [] {
    void* callstack[128];
    int i, frames = backtrace(callstack, 128);
    for (i = 0; i < frames; ++i) {
    if ((intptr_t)callstack[i] == 1)
    continue;

    const char* mangledName;
    const char* demangledName;
    Dl_info info;
    if (dladdr(callstack[i], &info) && info.dli_sname)
    mangledName = info.dli_sname;
    if (mangledName)
    demangledName = abi::__cxa_demangle(mangledName, nullptr, nullptr, nullptr);
    if (mangledName || demangledName)
    printf("0x%016lx %s + %ld\n", (intptr_t)callstack[i], demangledName ? demangledName : mangledName, (intptr_t)callstack[i] - (intptr_t)info.dli_saddr);
    else
    printf("?\n");
    }
    }();
    }

    @end

    int main(int argc, char** argv)
    {
    [MyObject doStuff];
    }