From bda3c885596c445a3f181c3935eabd953b455486 Mon Sep 17 00:00:00 2001
From: "Roberto E. Vargas Caballero" <k0ga@shike2.net>
Date: Sun, 23 Nov 2025 12:31:30 +0100
Subject: [PATCH] bc: Fix comment parsing

The function comment was misparsing comments, because it ate always
the character after a *, invalidating sequences like **/. Also, as it
didn't count new line characters error messages were misleading.
---
 bc.y | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/bc.y b/bc.y
index 37f33e7..6f6b52d 100644
--- a/bc.y
+++ b/bc.y
@@ -587,10 +587,17 @@ operand(int ch)
 static void
 comment(void)
 {
-	do {
-		while (getchar() != '*')
-			;
-	} while (getchar() != '/');
+	int c;
+
+	for (;;) {
+		while ((c = getchar()) != '*') {
+			if (c == '\n')
+				lineno++;
+		}
+		if ((c = getchar()) == '/')
+			break;
+		ungetc(c, stdin);
+	}
 }
 
 static int