From 000e9d54435081bd40f877b319658e44dc45c7e0 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Sat, 2 Aug 2025 03:32:06 +0900
Subject: feat: improve error message while processing #define directives

---
 preprocess.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/preprocess.c b/preprocess.c
index 9f98e40..5374c53 100644
--- a/preprocess.c
+++ b/preprocess.c
@@ -680,7 +680,8 @@ PpToken* process_define_directive(Preprocessor* pp, PpToken* tok) {
                 if (tok2->kind == PpTokenKind_punctuator && string_equals_cstr(&tok2->raw, ")")) {
                     ++tok2;
                 } else {
-                    fatal_error("#define: invalid function-like macro syntax");
+                    fatal_error("%s:%d: invalid function-like macro syntax (#define %.*s)", macro_name->loc.filename,
+                                macro_name->loc.line, macro_name->raw.len, macro_name->raw.data);
                 }
                 tok3 = find_next_newline(tok2);
                 if (tok3) {
-- 
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