parse.y: prohibit numbered parameters as arguments; fix #5605

2026-06-08 16:11:16 +00:00 · 2021-12-25 23:05:42 +09:00
parent e6b6413932
commit 27e57aad0b
2 changed files with 498 additions and 504 deletions
@@ -2751,6 +2751,7 @@ primary         : literal
                | tLAMBDA
                    {
                      local_nest(p);
+                      nvars_nest(p);
                      $<num>$ = p->lpar_beg;
                      p->lpar_beg = ++p->paren_nest;
                    }
@@ -2764,6 +2765,7 @@ primary         : literal
                      p->lpar_beg = $<num>2;
                      $$ = new_lambda(p, $3, $5);
                      local_unnest(p);
+                      nvars_unnest(p);
                      p->cmdarg_stack = $<stack>4;
                      CMDARG_LEXPOP();
                    }
@@ -6426,14 +6428,9 @@ parser_yylex(parser_state *p)
          if (nvar == -1) {
            yywarning(p, "numbered parameter used in inner block");
          }
-          if (nvar >= -1) {
-            pylval.num = n;
-            p->lstate = EXPR_END;
-            return tNUMPARAM;
-          }
-          else {
-            yywarning(p, "identifier for numbered parameter; consider another name");
-          }
+          pylval.num = n;
+          p->lstate = EXPR_END;
+          return tNUMPARAM;
        }
      }
      /* fall through */