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Iterate more on recent changes

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This commit is contained in:
Justine Tunney 2023-11-10 22:55:33 -08:00
parent 7138399f96
commit d0ad2694ed
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GPG key ID: BE714B4575D6E328
22 changed files with 90 additions and 158 deletions
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12
libc/intrin/extend.c
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@ -44,11 +44,9 @@ static void *_mapframe_impl(void *p, int f) {
if (!rc) {
return p;
} else {
unassert(errno == ENOMEM);
return 0;
}
} else {
unassert(errno == ENOMEM);
return 0;
}
}
@ -86,12 +84,16 @@ static void *_mapframe(void *p, int f) {
*/
void *_extend(void *p, size_t n, void *e, int f, intptr_t h) {
char *q;
unassert(!((uintptr_t)SHADOW(p) & (G - 1)));
unassert((uintptr_t)p + (G << kAsanScale) <= h);
#ifndef NDEBUG
if ((uintptr_t)SHADOW(p) & (G - 1)) notpossible;
if ((uintptr_t)p + (G << kAsanScale) > h) notpossible;
#endif
// TODO(jart): Make this spin less in non-ASAN mode.
for (q = e; q < ((char *)p + n); q += 8) {
if (!((uintptr_t)q & (G - 1))) {
unassert(q + G <= (char *)h);
#ifndef NDEBUG
if (q + G > (char *)h) notpossible;
#endif
if (!_mapframe(q, f)) return 0;
if (IsAsan()) {
if (!((uintptr_t)SHADOW(q) & (G - 1))) {