From ab7bee2bcb8c8ad131cec611e67c0b93fba2d32b Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Sun, 16 Sep 2012 18:58:06 +0200
Subject: [PATCH] Accept -Wformat=2 because it implies -Wformat.

---
 bin/blhc    | 3 ++-
 t/logs/good | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/bin/blhc b/bin/blhc
index 9525baa..b77420d 100755
--- a/bin/blhc
+++ b/bin/blhc
@@ -182,7 +182,7 @@ my @def_cflags = (
     '-O(?:2|3)',
 );
 my @def_cflags_format = (
-    '-Wformat',
+    '-Wformat(?:=2)?', # -Wformat=2 implies -Wformat, accept it too
     '-Werror=format-security', # implies -Wformat-security
 );
 my @def_cflags_fortify = (
@@ -251,6 +251,7 @@ my @flag_refs_all = (
 # stores string values of flag regexps above, see compile_flag_regexp().
 my %flag_renames = (
     '-O(?:2|3)'         => '-O2',
+    '-Wformat(?:=2)?'   => '-Wformat',
     '-Wl,(?:-z,)?relro' => '-Wl,-z,relro',
     '-Wl,(?:-z,)?now'   => '-Wl,-z,now',
 );
diff --git a/t/logs/good b/t/logs/good
index 0be962c..9837879 100644
--- a/t/logs/good
+++ b/t/logs/good
@@ -20,6 +20,9 @@ gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-s
 gcc -g -O3 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -c test-d.c
 gcc -Wl,-z,relro -o test test-a.o test-b.o test-c.o -ltest
 
+# -Wformat=2 implies -Wformat.
+gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat=2 -Werror=format-security -D_FORTIFY_SOURCE=2 -c test.c
+
 # Compiling and linking in one step must also check CFLAGS/CPPFLAGS.
 gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2 -Wl,-z,relro -o test test.c -ltest
 gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2 -shared -fPIC -Wl,-z,relro -o test.so test.c -ltest
-- 
2.43.2