From 51153d1951461d33fb7e4688af6a5b38caa68841 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Thu, 18 Dec 2025 20:38:52 +0100
Subject: cpp: better error recovery for #define syntax error

---
 c/lex.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

(limited to 'c')

diff --git a/c/lex.c b/c/lex.c
index 25cd50c..b9b2635 100644
--- a/c/lex.c
+++ b/c/lex.c
@@ -780,14 +780,15 @@ ppdefine(struct lexer *lx)
       while (lex0(lx, &tk) != ')') {
          if (mac.variadic) {
             error(&tk.span, "expected `)' after `...'");
-            if (tk.t == TKEOF)
-               return;
+            if (tk.t == TKEOF || tk.t == '\n') return;
             else break;
          }
          if (params.n > 0) {
-            if (tk.t != ',')
+            if (tk.t != ',') {
                error(&tk.span, "expected `,' or `)'");
-            if (tk.t == TKEOF) return;
+               if (tk.t == TKEOF || tk.t == '\n') return;
+               else break;
+            }
             lex0(lx, &tk);
          }
          if (isppident(tk))
@@ -797,8 +798,8 @@ ppdefine(struct lexer *lx)
             vpush(&params, intern("__VA_ARGS__"));
          } else {
             error(&tk.span, "expected parameter name or `)'");
-            if (tk.t == TKEOF)
-               return;
+            if (tk.t == TKEOF || tk.t == '\n') return;
+            else break;
          }
       }
       if (!params.n) vfree(&params);
-- 
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