diff options
| -rw-r--r-- | src/parse.y | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/parse.y b/src/parse.y index 76220499e..5b17649a9 100644 --- a/src/parse.y +++ b/src/parse.y @@ -5118,7 +5118,14 @@ parser_yylex(parser_state *p) pushback(p, c); if (last_state == EXPR_FNAME) goto gvar; tokfix(p); - yylval.nd = new_nth_ref(p, atoi(tok(p))); + { + unsigned long n = strtoul(tok(p), NULL, 10); + if (n > INT_MAX) { + yyerror_i(p, "capture group index must be <= %d", INT_MAX); + return 0; + } + yylval.nd = new_nth_ref(p, (int)n); + } return tNTH_REF; default: |