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[3.13] gh-132769: Refactor possible read-out-of-bounds in lexer.c (GH-132770) (#132788)

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gh-132769: Refactor possible read-out-of-bounds in `lexer.c` (GH-132770)
(cherry picked from commit ea8ec95cfa)

Co-authored-by: sobolevn <mail@sobolevn.me>
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Miss Islington (bot) 2025-04-22 00:42:55 +02:00 • committed by GitHub
parent cdabbc126f
commit e140e6ef78
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Parser/lexer/lexer.c
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@ -140,7 +140,7 @@ set_fstring_expr(struct tok_state* tok, struct token *token, char c) {
for (i = 0, j = 0; i < input_length; i++) {
if (tok_mode->last_expr_buffer[i] == '#') {
// Skip characters until newline or end of string
while (tok_mode->last_expr_buffer[i] != '\0' && i < input_length) {
while (i < input_length && tok_mode->last_expr_buffer[i] != '\0') {
if (tok_mode->last_expr_buffer[i] == '\n') {
result[j++] = tok_mode->last_expr_buffer[i];
break;