mingw-w64-crt/misc/wassert.c

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <string.h>
#include <signal.h>

extern int mingw_app_type;

static cpy_wstr (char *buf, const wchar_t *src, size_t max)
{
  if (src)
    {
      while (max > 0 && *src != 0)
       {
         *buf++ = (char) src[0];
         --max; src++;
       }
    }
  *buf = 0;
}

void __cdecl
_wassert(const wchar_t *_Message,const wchar_t *_File,unsigned _Line)
{
  char *msgbuf = (char *) malloc (8192);
  char fn[MAX_PATH + 1], msg[MAX_PATH + 1], iFile[MAX_PATH + 1];
  DWORD nCode;

  cpy_wstr (msg, _Message, MAX_PATH);
  cpy_wstr (iFile, _File, MAX_PATH);
  if (iFile[0] == 0)
    strcpy (iFile, "<unknown>");
  if (msg[0] == 0)
    strcpy (msg, "?");
  fn[MAX_PATH] = 0;
  if (! GetModuleFileName (NULL, fn, MAX_PATH))
    strcpy (fn, "<unknown>");
  sprintf (msgbuf, "Assertation failed!\n\nProgram: %s\nFile: %s, Line %u\n\nExpression: %s",
      	   fn, iFile,_Line,msg);
  if (mingw_app_type == 0)
    {
      fprintf (stderr, "%s\n", msgbuf);
      abort ();
    }
  nCode = MessageBoxA (NULL, msgbuf, "MinGW Runtime Assertation", MB_ABORTRETRYIGNORE|
    MB_ICONHAND|MB_SETFOREGROUND|MB_TASKMODAL);
  if (nCode == IDABORT)
    {
      raise (SIGABRT);
      _exit (3);
      abort ();
    }
  if (nCode == IDIGNORE)
    return;
  abort ();
}