diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4b2594053e..8342f15ff3 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-14  Pedro Alves  <pedro@codesourcery.com>
+
+	gdb/
+	* configure.ac (build_warnings): Add -Wunused-value.
+	* configure: Regenerate.
+
 2009-10-14  Tristan Gingold  <gingold@adacore.com>
 
 	* solib-darwin.c: Remove trailing whitespaces.
diff --git a/gdb/configure b/gdb/configure
index 40fb80319a..d628b6ae18 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -13117,7 +13117,7 @@ fi
 # gdb/doc/gdbint.texinfo.
 build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
 -Wformat-nonliteral -Wno-pointer-sign \
--Wno-unused -Wno-switch -Wno-char-subscripts"
+-Wno-unused -Wunused-value -Wno-switch -Wno-char-subscripts"
 
 # Enable -Wno-format by default when using gcc on mingw since many
 # GCC versions complain about %I64.
diff --git a/gdb/configure.ac b/gdb/configure.ac
index f9c17fdc23..b96caef4f7 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1542,7 +1542,7 @@ fi
 # gdb/doc/gdbint.texinfo.
 build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
 -Wformat-nonliteral -Wno-pointer-sign \
--Wno-unused -Wno-switch -Wno-char-subscripts"
+-Wno-unused -Wunused-value -Wno-switch -Wno-char-subscripts"
 
 # Enable -Wno-format by default when using gcc on mingw since many
 # GCC versions complain about %I64.