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Fix valgrind problem caused by reading text[-1].

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This commit is contained in:
Brian 2007-04-19 14:15:11 -06:00
parent 121f2212cc
commit 020cdb47cf
1 changed files with 5 additions and 3 deletions
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8
src/mesa/shader/grammar/grammar.c
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@ -2693,14 +2693,16 @@ fast_match (dict *di, const byte *text, int *index, rule *ru, int *_PP, bytepool
if (status == mr_matched)
{
if (sp->m_emits != NULL)
if (emit_push (sp->m_emits, _BP->_F + _P, text[ind - 1], save_ind, &ctx))
if (sp->m_emits != NULL) {
const byte ch = (ind <= 0) ? 0 : text[ind - 1];
if (emit_push (sp->m_emits, _BP->_F + _P, ch, save_ind, &ctx))
{
free_regbyte_ctx_stack (ctx, *rbc);
return mr_internal_error;
}
_P = _P2;
}
_P = _P2;
}
/* if the rule operator is a logical or, we pick up the first matching specifier */