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[3.12] gh-112387: Fix error positions for decoded strings with backwards tokenize errors (GH-112409) (#112468)

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gh-112387: Fix error positions for decoded strings with backwards tokenize errors (GH-112409)
(cherry picked from commit 45d648597b)

Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
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Miss Islington (bot) 2023-11-27 19:57:34 +01:00 • committed by GitHub
parent 4463d2e018
commit 7140716c88
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3 changed files with 10 additions and 0 deletions
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Parser/pegen_errors.c
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@ -276,6 +276,10 @@ get_error_line_from_tokenizer_buffers(Parser *p, Py_ssize_t lineno)
Py_ssize_t relative_lineno = p->starting_lineno ? lineno - p->starting_lineno + 1 : lineno;
const char* buf_end = p->tok->fp_interactive ? p->tok->interactive_src_end : p->tok->inp;
if (buf_end < cur_line) {
buf_end = cur_line + strlen(cur_line);
}
for (int i = 0; i < relative_lineno - 1; i++) {
char *new_line = strchr(cur_line, '\n');
// The assert is here for debug builds but the conditional that