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Fix warnings

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This change fixes Cosmopolitan so it has fewer opinions about compiler
warnings. The whole repository had to be cleaned up to be buildable in
-Werror -Wall mode. This lets us benefit from things like strict const
checking. Some actual bugs might have been caught too.
This commit is contained in:
Justine Tunney 2023-09-01 20:49:13 -07:00
parent e2b3c3618e
commit 0d748ad58e
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GPG key ID: BE714B4575D6E328
571 changed files with 1306 additions and 1888 deletions
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6
libc/str/mbtowc.c
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@ -51,19 +51,19 @@ int mbtowc(wchar_t *restrict wc, const char *restrict src, size_t n) {
* insufficient to read a character */
if (n < 4 && ((c << (6 * n - 6)) & (1U << 31))) goto ilseq;
if (OOB(c, *s)) goto ilseq;
c = c << 6 | *s++ - 0x80;
c = c << 6 | (*s++ - 0x80);
if (!(c & (1U << 31))) {
*wc = c;
return 2;
}
if (*s - 0x80u >= 0x40) goto ilseq;
c = c << 6 | *s++ - 0x80;
c = c << 6 | (*s++ - 0x80);
if (!(c & (1U << 31))) {
*wc = c;
return 3;
}
if (*s - 0x80u >= 0x40) goto ilseq;
*wc = c << 6 | *s++ - 0x80;
*wc = c << 6 | (*s++ - 0x80);
return 4;
ilseq:
errno = EILSEQ;