StackWalk64 on Windows - Get symbol name

You have set symbol.MaxNameLength to 255, but you allocated "symbol" on the stack with IMAGEHLP_SYMBOL64 symbol;. That type is defined as:

typedef struct _IMAGEHLP_SYMBOL64 {  DWORD   SizeOfStruct;  DWORD64 Address;  DWORD   Size;  DWORD   Flags;  DWORD   MaxNameLength;  TCHAR   Name[1];} IMAGEHLP_SYMBOL64;

Notice that the Name field only has one character by default. If you want to store bigger names, you need to do something like:

 const int MaxNameLen = 255; IMAGEHLP_SYMBOL64* pSymbol =        malloc(sizeof(IMAGEHLP_SYMBOL64)+MaxNameLen*sizeof(TCHAR)); pSymbol->MaxNameLength = MaxNameLen;

Otherwise, SymGetSymFromAddr64() is likely to overwrite memory. Here is what the help page for the structure says (emphasis added):

MaxNameLength: The maximum length of the string that the Name member can contain, in characters, not including the null-terminating character. Because symbol names can vary in length, this data structure is allocated by the caller. This member is used so the library knows how much memory is available for use by the symbol name.

Check out the Stackwalker project on codeplex - it's open source. Works nicely.

I used your code and it also didn't work at first, until I noticed in the documentation that you first need to call SymInitialize, like SymInitialize(process, NULL, TRUE) . You can call this before RtlCaptureContext.