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Fixing bug #1072259 in SRE.

This commit is contained in:
Gustavo Niemeyer 2004-12-02 16:15:39 +00:00
parent 4901a1f267
commit 166878f544
1 changed files with 10 additions and 7 deletions
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17
Modules/_sre.c
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@ -1024,9 +1024,10 @@ SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern)
state->ptr = ctx->ptr;
ctx->count = SRE_COUNT(state, ctx->pattern+3, ctx->pattern[2]);
RETURN_ON_ERROR(ctx->count);
ret = SRE_COUNT(state, ctx->pattern+3, ctx->pattern[2]);
RETURN_ON_ERROR(ret);
DATA_LOOKUP_AT(SRE_MATCH_CONTEXT, ctx, ctx_pos);
ctx->count = ret;
ctx->ptr += ctx->count;
/* when we arrive here, count contains the number of
@ -1110,13 +1111,14 @@ SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern)
ctx->count = 0;
else {
/* count using pattern min as the maximum */
ctx->count = SRE_COUNT(state, ctx->pattern+3,
ctx->pattern[1]);
RETURN_ON_ERROR(ctx->count);
if (ctx->count < (int) ctx->pattern[1])
ret = SRE_COUNT(state, ctx->pattern+3, ctx->pattern[1]);
RETURN_ON_ERROR(ret);
DATA_LOOKUP_AT(SRE_MATCH_CONTEXT, ctx, ctx_pos);
if (ret < (int) ctx->pattern[1])
/* didn't match minimum number of times */
RETURN_FAILURE;
/* advance past minimum matches of repeat */
ctx->count = ret;
ctx->ptr += ctx->count;
}
@ -1140,6 +1142,7 @@ SRE_MATCH(SRE_STATE* state, SRE_CODE* pattern)
state->ptr = ctx->ptr;
ret = SRE_COUNT(state, ctx->pattern+3, 1);
RETURN_ON_ERROR(ret);
DATA_LOOKUP_AT(SRE_MATCH_CONTEXT, ctx, ctx_pos);
if (ret == 0)
break;
assert(ret == 1);