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Correct reference to dangling pointer and better note bounds checking

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lib/jit_note.c: Correct bounds check and wrong code keeping
	a pointer that could be changed after a realloc call.
This commit is contained in:
pcpa 2013-01-18 18:26:14 -02:00
parent 9e86ef12cf
commit 2da31e82fa
2 changed files with 7 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-01-18 Paulo Andrade <pcpa@gnu.org>
lib/jit_note.c: Correct bounds check and wrong code keeping
a pointer that could be changed after a realloc call.
2013-01-18 Paulo Andrade <pcpa@gnu.org>
* check/3to2.tst, check/add.tst, check/allocai.tst, check/bp.tst,

4
lib/jit_note.c
View file

@ -195,10 +195,10 @@ _new_note(jit_state_t *_jit, jit_uint8_t *code, char *name)
_jit->note.ptr = malloc(sizeof(jit_note_t) * 8);
}
else {
prev = _jit->note.ptr + _jit->note.length - 1;
if ((_jit->note.length & 7) == 7)
_jit->note.ptr = realloc(_jit->note.ptr, sizeof(jit_note_t) *
(_jit->note.length + 9));
prev = _jit->note.ptr + _jit->note.length - 1;
}
if (prev) {
assert(code >= prev->code);
@ -255,7 +255,7 @@ _note_search_index(jit_state_t *_jit, jit_uint8_t *code)
if (code < notes[index].code)
top = index;
else if (code >= notes[index].code &&
code - notes[index].code <= notes[index].size)
code - notes[index].code < notes[index].size)
break;
else
bot = index + 1;