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Simplify overflow calculations a bit

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This commit is contained in:
Andrey A. Chernov 2001-08-17 11:08:56 +00:00
parent 4a9f1ee4e5
commit 98aa5183a2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=81822
1 changed files with 2 additions and 4 deletions
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6
lib/libc/stdio/fseek.c
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@ -144,8 +144,7 @@ _fseeko(fp, offset, whence, ltest)
curoff += fp->_p - fp->_bf._base;
/* curoff always >= 0 */
if (offset > 0 &&
curoff > (ltest ? LONG_MAX : OFF_MAX) - offset) {
if (offset > 0 && curoff > OFF_MAX - offset) {
errno = EOVERFLOW;
return (EOF);
}
@ -212,8 +211,7 @@ _fseeko(fp, offset, whence, ltest)
if (_fstat(fp->_file, &st))
goto dumb;
/* st.st_size always >= 0 */
if (offset > 0 &&
st.st_size > (ltest ? LONG_MAX : OFF_MAX) - offset) {
if (offset > 0 && st.st_size > OFF_MAX - offset) {
errno = EOVERFLOW;
return (EOF);
}