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gh-109631: Allow interruption of short repeated regex matches (GH-109867)

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Counting for signal checking now continues in new match from the point where
it ended in the previous match instead of starting from 0.
This commit is contained in:
Serhiy Storchaka 2023-09-26 10:56:33 +03:00 • committed by GitHub
parent 7c61a361fc
commit 8ac2085b80
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 8 additions and 2 deletions
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6
Modules/_sre/sre_lib.h
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@ -564,7 +564,7 @@ SRE(match)(SRE_STATE* state, const SRE_CODE* pattern, int toplevel)
Py_ssize_t alloc_pos, ctx_pos = -1;
Py_ssize_t ret = 0;
int jump;
unsigned int sigcount=0;
unsigned int sigcount = state->sigcount;
SRE(match_context)* ctx;
SRE(match_context)* nextctx;
@ -1567,8 +1567,10 @@ exit:
ctx_pos = ctx->last_ctx_pos;
jump = ctx->jump;
DATA_POP_DISCARD(ctx);
if (ctx_pos == -1)
if (ctx_pos == -1) {
state->sigcount = sigcount;
return ret;
}
DATA_LOOKUP_AT(SRE(match_context), ctx, ctx_pos);
switch (jump) {