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From 382877acc6c029e59e359a076d203ca03b4b9e9e Mon Sep 17 00:00:00 2001
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From: Jan Synacek <jsynacek@redhat.com>
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Date: Wed, 3 May 2017 14:34:36 +0200
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Subject: [PATCH] compile with -Werror
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The maybe-uninitialized flag has to be disabled, because gcc on RHEL7
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reports tons of obvious false-positive warnings when variables are
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wrapped with _cleanup_.
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Also, LTO is better to be disabled. According to gcc folks, it makes
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debugging really hard and is not really recommended on RHEL7. Plus it
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makes the compilation fail with
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In function '__ppoll_alias',
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inlined from 'bus_poll' at src/libsystemd/sd-bus/sd-bus.c:2822:11:
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/usr/include/bits/poll2.h:71:9: warning: call to '__ppoll_chk_warn' declared with attribute warning: ppoll called with fds buffer too small file nfds entries
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return __ppoll_chk (__fds, __nfds, __timeout, __ss, __bos (__fds));
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That is also a gcc bug, already fixed in the gcc upstream
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(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61886).
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Resolves: #1447937
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---
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configure.ac | 12 ++----------
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src/core/main.c | 1 -
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src/login/logind-session.c | 2 +-
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3 files changed, 3 insertions(+), 12 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index 2734368dc..def9fe5ce 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -187,7 +187,8 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
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-Wno-unused-parameter \
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-Wno-missing-field-initializers \
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-Wno-unused-result \
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- -Werror=overflow \
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+ -Werror \
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+ -Wno-error=maybe-uninitialized \
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-Wdate-time \
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-Wnested-externs \
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-ffast-math \
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@@ -208,15 +209,6 @@ AS_CASE([$CC], [*clang*],
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-Wno-gnu-variable-sized-type-not-at-end \
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])])
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-AC_ARG_ENABLE([lto], AS_HELP_STRING([--disable-lto], [Disable Link time optimization]))
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-AS_IF([test "x$enable_lto" != "xno"], [
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-AS_CASE([$CFLAGS], [*-O[[12345\ ]]*], [
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- CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [-flto -ffat-lto-objects])
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- CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS],[-Wl,-fuse-ld=gold])
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- ],
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-[AC_MSG_RESULT([skipping -flto, optimization not enabled])])
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-])
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-
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AC_SUBST([OUR_CFLAGS], "$with_cflags $sanitizer_cflags")
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AS_CASE([$CFLAGS], [*-O[[12345sz\ ]]*],
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diff --git a/src/core/main.c b/src/core/main.c
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index 50c9714f7..37e3ea0ce 100644
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--- a/src/core/main.c
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+++ b/src/core/main.c
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@@ -1205,7 +1205,6 @@ static int status_welcome(void) {
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static int write_container_id(void) {
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const char *c;
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- int r;
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c = getenv("container");
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if (isempty(c))
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diff --git a/src/login/logind-session.c b/src/login/logind-session.c
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index 4575a029f..daf875a7d 100644
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--- a/src/login/logind-session.c
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+++ b/src/login/logind-session.c
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@@ -183,7 +183,7 @@ int session_save(Session *s) {
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"STATE=%s\n"
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"REMOTE=%i\n"
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"STOPPING=%i\n",
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- (unsigned long) s->user->uid,
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+ s->user->uid,
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s->user->name,
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session_is_active(s),
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session_state_to_string(session_get_state(s)),
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