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| author | Corinna Vinschen <corinna@vinschen.de> | 2011-12-20 09:06:58 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2011-12-20 09:06:58 +0000 |
| commit | 87865f4c9a6b629a054cd763d2baca7f8132c423 (patch) | |
| tree | 4da32e0053bc221a3eaa1925a138283ebb27f23b /newlib/libc/stdio/fvwrite.c | |
| parent | e7c65aae83d9872531cb3c7992364b115d8373e1 (diff) | |
| download | cygnal-87865f4c9a6b629a054cd763d2baca7f8132c423.tar.gz cygnal-87865f4c9a6b629a054cd763d2baca7f8132c423.tar.bz2 cygnal-87865f4c9a6b629a054cd763d2baca7f8132c423.zip | |
* fvwrite.c (__sfvwrite_r): Set __SMBF flag to avoid double free in
fclose. Enhance comment.
Diffstat (limited to 'newlib/libc/stdio/fvwrite.c')
| -rw-r--r-- | newlib/libc/stdio/fvwrite.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/newlib/libc/stdio/fvwrite.c b/newlib/libc/stdio/fvwrite.c index f196b3cfe..384c62ce0 100644 --- a/newlib/libc/stdio/fvwrite.c +++ b/newlib/libc/stdio/fvwrite.c @@ -155,8 +155,10 @@ _DEFUN(__sfvwrite_r, (ptr, fp, uio), newsize); if (!str) { - /* Free buffer which is no longer used. */ + /* Free buffer which is no longer used and clear + __SMBF flag to avoid double free in fclose. */ _free_r (ptr, fp->_bf._base); + fp->_flags &= ~__SMBF; /* Ensure correct errno, even if free changed it. */ ptr->_errno = ENOMEM; goto err; |