diff options
Diffstat (limited to 'lib/libc/stdio/fvwrite.c')
| -rw-r--r-- | lib/libc/stdio/fvwrite.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/lib/libc/stdio/fvwrite.c b/lib/libc/stdio/fvwrite.c index 5061773..75dfca9 100644 --- a/lib/libc/stdio/fvwrite.c +++ b/lib/libc/stdio/fvwrite.c @@ -39,10 +39,11 @@ static char sccsid[] = "@(#)fvwrite.c 8.1 (Berkeley) 6/4/93"; #endif static const char rcsid[] = - "$Id: fvwrite.c,v 1.6 1997/12/24 13:17:13 ache Exp $"; + "$Id: fvwrite.c,v 1.7 1997/12/24 23:23:18 ache Exp $"; #endif /* LIBC_SCCS and not lint */ #include <stdio.h> +#include <stdlib.h> #include <string.h> #include "local.h" #include "fvwrite.h" @@ -111,6 +112,22 @@ __sfvwrite(fp, uio) */ do { GETIOV(;); + if ((fp->_flags & (__SALC | __SSTR)) == + (__SALC | __SSTR) && fp->_w < len) { + size_t blen = fp->_p - fp->_bf._base; + + /* + * Alloc an extra 128 bytes (+ 1 for NULL) + * so we don't call realloc(3) so often. + */ + fp->_w = len + 128; + fp->_bf._size = blen + len + 128; + fp->_bf._base = + realloc(fp->_bf._base, fp->_bf._size + 1); + if (fp->_bf._base == NULL) + goto err; + fp->_p = fp->_bf._base + blen; + } w = fp->_w; if (fp->_flags & __SSTR) { if (len < w) |
