reactos/lib/sdk/crt/misc/assert.c

   1 /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
   2 #include <precomp.h>
   3 #include <assert.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <signal.h>
   7
   8 static const char formatstr[] =
   9     "Assertion failed!\n\n"
  10     "Program: %s\n"
  11     "File: %s\n"
  12     "Line: %ld\n\n"
  13     "Expression: %s\n"
  14     "Press Retry to debug the application\n";
  15
  16
  17 /*
  18  * @implemented
  19  */
  20 void _assert(const char *exp, const char *file, unsigned line)
  21 {
  22     int (WINAPI *pMessageBoxA)(HWND, LPCTSTR, LPCTSTR, UINT);
  23     HMODULE hmodUser32;
  24     char achProgram[40];
  25     char *pszBuffer;
  26     size_t len;
  27     int iResult;
  28
  29     /* Assertion failed at foo.c line 45: x<y */
  30     fprintf(stderr, "Assertion failed at %s line %d: %s\n", file, line, exp);
  31     FIXME("Assertion failed at %s line %d: %s\n", file, line, exp);
  32
  33     /* Get MessageBoxA function pointer */
  34     hmodUser32 = LoadLibrary("user32.dll");
  35     pMessageBoxA = (PVOID)GetProcAddress(hmodUser32, "MessageBoxA");
  36     if (!pMessageBoxA)
  37     {
  38         abort();
  39     }
  40
  41     /* Get the file name of the module */
  42     len = GetModuleFileNameA(NULL, achProgram, 40);
  43
  44     /* Calculate full length of the message */
  45     len += sizeof(formatstr) + len + strlen(exp) + strlen(file);
  46
  47     /* Allocate a buffer */
  48     pszBuffer = malloc(len + 1);
  49
  50     /* Format a message */
  51     _snprintf(pszBuffer, len, formatstr, achProgram, file, line, exp);
  52
  53     /* Display a message box */
  54     iResult = pMessageBoxA(NULL,
  55                           pszBuffer,
  56                           "ReactOS C Runtime Library",
  57                           MB_ABORTRETRYIGNORE | MB_ICONERROR);
  58
  59     free(pszBuffer);
  60
  61     /* Does the user want to abort? */
  62     if (iResult == IDABORT)
  63     {
  64         abort();
  65     }
  66
  67     /* Does the user want to debug? */
  68     if (iResult == IDRETRY)
  69     {
  70         DbgRaiseAssertionFailure();
  71     }
  72 }