From 555bd83a8e8b1e859f698089cbbd9ad938159a0e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 30 Nov 2020 15:19:49 +0900
Subject: Raise when loading unprovided builtin function [Bug #17192]

---
 compile.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'compile.c')

diff --git a/compile.c b/compile.c
index f6f5a1d848..0525c3ed87 100644
--- a/compile.c
+++ b/compile.c
@@ -10296,14 +10296,13 @@ ibf_load_builtin(const struct ibf_load *load, ibf_offset_t *offset)
     const char *name = (char *)ibf_load_ptr(load, offset, len);
 
     if (0) {
-        for (int i=0; i<len; i++) fprintf(stderr, "%c", name[i]);
-        fprintf(stderr, "!!\n");
+        fprintf(stderr, "%.*s!!\n", len, name);
     }
 
     const struct rb_builtin_function *table = GET_VM()->builtin_function_table;
-    if (table == NULL) rb_bug("%s: table is not provided.", RUBY_FUNCTION_NAME_STRING);
+    if (table == NULL) rb_raise(rb_eArgError, "builtin function table is not provided");
     if (strncmp(table[i].name, name, len) != 0) {
-        rb_bug("%s: index (%d) mismatch (expect %s but %s).", RUBY_FUNCTION_NAME_STRING, i, name, table[i].name);
+        rb_raise(rb_eArgError, "builtin function index (%d) mismatch (expect %s but %s)", i, name, table[i].name);
     }
     // fprintf(stderr, "load-builtin: name:%s(%d)\n", table[i].name, table[i].argc);
 
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