synctex/patches/06-mingw-_synctex_error.diff

0001 _vscprintf() is specific for MSVC; thus in _synctex_error(), for any other
0002 compiler on Windows, use _vsnprintf() and grow the buffer until necessary.
0003
0004 Patch provided by Patrick Spendrin <ps_ml@gmx.de>.
0005
0006 Index: synctex/synctex_parser_utils.c
0007 ===================================================================
0008 --- synctex.orig/synctex_parser_utils.c
0009 +++ synctex/synctex_parser_utils.c
0010 @@ -104,8 +104,26 @@ int _synctex_log(int level, const char *
0011                 char *buff;
0012                 size_t len;
0013                 OutputDebugStringA(prompt);
0014 +#      ifdef _MSC_VER
0015                 len = _vscprintf(reason, arg) + 1;
0016                 buff = (char*)malloc( len * sizeof(char) );
0017 +#      else  /* MinGW */
0018 +               size_t buffersize = 1024;
0019 +               size_t max_buffersize = 1024 * buffersize;
0020 +               int result;
0021 +               buff = (char*)malloc(buffersize * sizeof(char));
0022 +               result = _vsnprintf(buff, buffersize - 1, reason, arg);
0023 +               while(-1 == result && buffersize <= max_buffersize) {
0024 +                       buffersize = buffersize * 2;
0025 +                       buff = (char*)realloc(buff, buffersize * sizeof(char));
0026 +                       result = _vsnprintf(buff, buffersize - 1, reason, arg);
0027 +               }
0028 +               if(-1 == result) {
0029 +                       // could not make the buffer big enough or simply could not write to it
0030 +                       free(buff);
0031 +                       return -1;
0032 +               }
0033 +#      endif
0034                 result = vsprintf(buff, reason, arg) +strlen(prompt);
0035                 OutputDebugStringA(buff);
0036                 OutputDebugStringA("\n");