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gh-103824: fix use-after-free error in Parser/tokenizer.c by chgnrdv · Pull Request #103993 · python/cpython · GitHub
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gh-103824: fix use-after-free error in Parser/tokenizer.c #103993

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Merged
pablogsal merged 5 commits into from
May 1, 2023
+18 −1
Merged

gh-103824: fix use-after-free error in Parser/tokenizer.c #103993

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c120bc2
Fix use-after-free in tokenizer.c
chgnrdv Apr 29, 2023
a36418c
added test
chgnrdv Apr 30, 2023
0ef4f23
fixed test
chgnrdv Apr 30, 2023
a58adfd
Merge branch 'main' into fix-tokenizer-use-after-free
chgnrdv Apr 30, 2023
b198bc8
Update Parser/tokenizer.c
pablogsal May 1, 2023
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Update Parser/tokenizer.c
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@pablogsal
pablogsal authored May 1, 2023
commit b198bc8ccaaedf91dd032c7f590f54dfafe8ac59
3 changes: 2 additions & 1 deletion Parser/tokenizer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2552,8 +2552,9 @@ tok_get_fstring_mode(struct tok_state *tok, tokenizer_mode* current_tok, struct
while (end_quote_size != current_tok->f_string_quote_size) {
int c = tok_nextc(tok);
if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
if (tok->decoding_erred)
if (tok->decoding_erred) {
return MAKE_TOKEN(ERRORTOKEN);
}

assert(tok->multi_line_start != NULL);
// shift the tok_state's location into
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