reads: fix bug 1078

This commit is contained in:
Denis Vlasenko 2006-10-31 22:46:08 +00:00
parent 4126b1f5c6
commit b141b9b512

View File

@ -86,7 +86,8 @@ char *reads(int fd, char *buffer, size_t size)
if (p) {
off_t offset;
*p++ = '\0';
offset = (p-buffer) - size;
// avoid incorrect (unsigned) widening
offset = (off_t)(p-buffer) - (off_t)size;
// set fd position the right after the \n
if (offset && lseek(fd, offset, SEEK_CUR) == (off_t)-1)
return NULL;