From 55852df7c82c2a653f17721da5ec31680d3c8ce3 Mon Sep 17 00:00:00 2001 From: Thomas Haller Date: Mon, 6 Feb 2017 14:52:51 +0100 Subject: [PATCH] build: disable -Wformat-truncation warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The warning seems questionable and overly strict. For now, just disable it to allow building with gcc7. src/systemd/src/basic/time-util.c: In function ‘format_timespan’: src/systemd/src/basic/time-util.c:509:46: error: ‘%0*lu’ directive output between 1 and 2147483648 bytes may cause result to exceed ‘INT_MAX’ [-Werror=format-truncation=] "%s"USEC_FMT".%0*"PRI_USEC"%s", ^~~~ src/systemd/src/basic/time-util.c:509:60: note: format string is defined here "%s"USEC_FMT".%0*"PRI_USEC"%s", src/systemd/src/basic/time-util.c:509:46: note: directive argument in the range [0, 18446744073709551614] "%s"USEC_FMT".%0*"PRI_USEC"%s", ^~~~ https://mail.gnome.org/archives/networkmanager-list/2017-February/msg00001.html (cherry picked from commit 705e63a292974abeccaaabb8dd405804e676275b) --- m4/compiler_options.m4 | 1 + 1 file changed, 1 insertion(+) diff --git a/m4/compiler_options.m4 b/m4/compiler_options.m4 index e2f51c4838..11ee322fe6 100644 --- a/m4/compiler_options.m4 +++ b/m4/compiler_options.m4 @@ -81,6 +81,7 @@ if test "$GCC" = "yes" -a "$set_more_warnings" != "no"; then -Wformat-nonliteral \ -Wmissing-include-dirs \ -Wno-pragmas \ + -Wno-format-truncation \ ; do dnl GCC 4.4 does not warn when checking for -Wno-* flags (https://gcc.gnu.org/wiki/FAQ#wnowarning) _NM_COMPILER_FLAG([$(printf '%s' "$option" | sed 's/^-Wno-/-W/')], [],