From b442b21d3f304f18647165e46c62de7b6a72fac1 Mon Sep 17 00:00:00 2001
From: Ian Henry <ianthehenry@gmail.com>
Date: Mon, 20 Feb 2023 17:04:12 -0800
Subject: [PATCH] fix a segfault in the (number) special

This was an error about the base argument that referenced the tag argument,
which might not exist.
---
 src/core/peg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/peg.c b/src/core/peg.c
index 236d497b..b7de920d 100644
--- a/src/core/peg.c
+++ b/src/core/peg.c
@@ -1034,7 +1034,7 @@ static void spec_capture_number(Builder *b, int32_t argc, const Janet *argv) {
     emit_3(r, RULE_CAPTURE_NUM, rule, base, tag);
     return;
 error:
-    peg_panicf(b, "expected integer between 2 and 36, got %v", argv[2]);
+    peg_panicf(b, "expected integer between 2 and 36, got %v", argv[1]);
 }
 
 static void spec_reference(Builder *b, int32_t argc, const Janet *argv) {