--- a/ChangeLog	Mon Jun 25 08:28:12 2018 -0700
+++ b/ChangeLog	Mon Jun 25 21:04:11 2018 +0200
@@ -1,3 +1,10 @@
+2018-06-25  Bruno Haible  <bruno@clisp.org>
+
+	manywarnings: Don't enable -Wjump-misses-init warnings by default.
+	* build-aux/gcc-warning.spec: Add -Wjump-misses-init.
+	* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC(C)): Remove
+	-Wjump-misses-init.
+
 2018-06-25  Jim Meyering  <meyering@fb.com>
 
 	acl-internal.h: remove _GL_ATTRIBUTE_CONST on void function

--- a/build-aux/gcc-warning.spec	Mon Jun 25 08:28:12 2018 -0700
+++ b/build-aux/gcc-warning.spec	Mon Jun 25 21:04:11 2018 +0200
@@ -18,7 +18,7 @@
 -Warray-bounds=<0,2>			handled specially by gl_MANYWARN_ALL_GCC
 -Warray-temporaries			fortran
 -Wassign-intercept			objc/objc++
--Wc++-compat				FIXME maybe? borderline.  some will want this
+-Wc++-compat				only useful for code meant to be compiled by a C++ compiler
 -Wc++0x-compat				c++
 -Wc++11-compat				c++
 -Wc++14-compat				c++
@@ -65,6 +65,7 @@
 -Wintrinsic-shadow			fortran
 -Wintrinsics-std			fortran
 -Winvalid-offsetof			c++ and objc++
+-Wjump-misses-init			only useful for code meant to be compiled by a C++ compiler
 -Wlarger-than-				gcc --help=warnings artifact
 -Wlarger-than=<number>			FIXME: choose something sane?
 -Wline-truncation			fortran

--- a/m4/manywarnings.m4	Mon Jun 25 08:28:12 2018 -0700
+++ b/m4/manywarnings.m4	Mon Jun 25 21:04:11 2018 +0200
@@ -1,4 +1,4 @@
-# manywarnings.m4 serial 14
+# manywarnings.m4 serial 15
 dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -108,7 +108,7 @@
   # comm -3 \
   #  <((sed -n 's/^  *\(-[^ 0-9][^ ]*\) .*/\1/p' manywarnings.m4; \
   #     awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec) | sort) \
-  #  <(gcc --help=warnings | sed -n 's/^  \(-[^ ]*\) .*/\1/p' | sort)
+  #  <(LC_ALL=C gcc --help=warnings | sed -n 's/^  \(-[^ ]*\) .*/\1/p' | sort)
 
   gl_manywarn_set=
   for gl_manywarn_item in -fno-common \
@@ -174,7 +174,6 @@
     -Wint-to-pointer-cast \
     -Winvalid-memory-model \
     -Winvalid-pch \
-    -Wjump-misses-init \
     -Wlogical-not-parentheses \
     -Wlogical-op \
     -Wmain \