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Microoptimize.

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This commit is contained in:
ache 2015-11-01 08:40:15 +00:00
parent 135d0338a0
commit 1f0f2b0908
1 changed files with 3 additions and 4 deletions
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7
lib/libc/stdio/ftell.c
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@ -118,15 +118,14 @@ _ftello(FILE *fp, fpos_t *offset)
}
if (HASUB(fp))
pos -= fp->_r; /* Can be negative at this point. */
} else if ((fp->_flags & __SWR) && fp->_p != NULL) {
} else if ((fp->_flags & __SWR) && fp->_p != NULL &&
(n = fp->_p - fp->_bf._base) > 0) {
/*
* Writing. Any buffered characters cause the
* position to be greater than that in the
* underlying object.
*/
n = fp->_p - fp->_bf._base;
if (n > 0 &&
((fp->_flags & __SAPP) || (fp->_flags2 & __S2OAP))) {
if ((fp->_flags & __SAPP) || (fp->_flags2 & __S2OAP)) {
int serrno = errno;
errno = 0;