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gh-120155: Fix Coverity issue in parse_string() #120997

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Merged
merged 1 commit into from
Jun 25, 2024
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gh-120155: Fix Coverity issue in parse_string() #120997

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5 changes: 5 additions & 0 deletions Parser/string_parser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -229,9 +229,14 @@ _PyPegen_parse_string(Parser *p, Token *t)
PyErr_BadInternalCall();
return NULL;
}

/* Skip the leading quote char. */
s++;
len = strlen(s);
// gh-120155: 's' contains at least the trailing quote,
// so the code '--len' below is safe.
assert(len >= 1);

if (len > INT_MAX) {
PyErr_SetString(PyExc_OverflowError, "string to parse is too long");
return NULL;
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