From: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
Date: Tue, 6 Jan 2026 15:43:45 +0000 (-0500)
Subject: build-sys: (gcc) ignore -Wunused-but-set-variable for bison
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db9047892a45c06bceb5768e7bb8c887289b9859;p=thirdparty%2Futil-linux.git

build-sys: (gcc) ignore -Wunused-but-set-variable for bison

[kzak@redhat.com: - merge two Christian's patches to make it more portable]

Signed-off-by: Christian Goeschel Ndjomouo <cgoesc2@wgu.edu>
Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libsmartcols/src/filter-parser.y b/libsmartcols/src/filter-parser.y
index a7d41408e..23b05df33 100644
--- a/libsmartcols/src/filter-parser.y
+++ b/libsmartcols/src/filter-parser.y
@@ -1,9 +1,12 @@
 %{
-#ifdef __clang__
-/* clang detects yynerrs as unused.
- * Will be fixed in future versions of bison.
+/*
+ * Compilers detect yynerrs as unused. Let's hope it will be fixed in future
+ * versions of Bison.
  */
-#pragma clang diagnostic ignored "-Wunused-but-set-variable"
+#if defined(__GNUC__) && !defined(__clang__)
+# pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#elif defined(__clang__)
+# pragma clang diagnostic ignored "-Wunused-but-set-variable"
 #endif
 
 #include <stdio.h>
diff --git a/sys-utils/hwclock-parse-date.y b/sys-utils/hwclock-parse-date.y
index 5d6daf0e6..dd379cab7 100644
--- a/sys-utils/hwclock-parse-date.y
+++ b/sys-utils/hwclock-parse-date.y
@@ -34,11 +34,14 @@
  * TZ strings in dates.
  */
 
-#ifdef __clang__
-/* clang 15 detects yynerrs as unused.
- * Will be fixed in future versions of bison.
+/*
+ * Compilers detect yynerrs as unused. Let's hope it will be fixed in future
+ * versions of Bison.
  */
-#pragma clang diagnostic ignored "-Wunused-but-set-variable"
+#if defined(__GNUC__) && !defined(__clang__)
+# pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#elif defined(__clang__)
+# pragma clang diagnostic ignored "-Wunused-but-set-variable"
 #endif
 
 /**