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msvcrt: Don't write to buffer in ungetc if _IOSTRG flag is specified.

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This commit is contained in:
Piotr Caban 2013-12-30 16:55:59 +01:00 committed by Alexandre Julliard
parent 6122c2ba37
commit ed2d53a36a
1 changed files with 9 additions and 1 deletions
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8
dlls/msvcrt/file.c
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@ -4713,7 +4713,15 @@ int CDECL MSVCRT_ungetc(int c, MSVCRT_FILE * file)
file->_ptr++;
if(file->_ptr>file->_base) {
file->_ptr--;
if(file->_flag & MSVCRT__IOSTRG) {
if(*file->_ptr != c) {
file->_ptr++;
MSVCRT__unlock_file(file);
return MSVCRT_EOF;
}
}else {
*file->_ptr = c;
}
file->_cnt++;
MSVCRT_clearerr(file);
MSVCRT__unlock_file(file);