Hi On Tue, Feb 24, 2015 at 4:07 PM, Zbigniew Jędrzejewski-Szmek <[email protected]> wrote: > On Tue, Feb 24, 2015 at 07:02:49AM -0800, David Herrmann wrote: >> configure.ac | 1 + >> 1 file changed, 1 insertion(+) >> >> New commits: >> commit 0a98d66159e474915afd6597d3aa444a698fdd2d >> Author: David Herrmann <[email protected]> >> Date: Tue Feb 24 15:59:06 2015 +0100 >> >> build: add -Wno-format-signedness >> >> gcc5 introduced this option (gcc4 silently ignores it, which is fine). >> Given that gcc5 thinks 'unsigned char'/'unsigned short' is promoted to >> 'int' for var-args, stuff like this spits out warnings: >> uint8_t x; >> printf("%" PRIu8", x); >> >> gcc5 promots 'x' to 'int', instead of 'unsigned int' and thus gets a >> signedness-warnings as it expects an 'unsigned int'. >> >> glibc states otherwise: unsigneds are always promoted to 'unsigned int'. >> Until gcc and glibc figure this out, lets just ignore that warning (which >> is totally useless in its current form). >> >> diff --git a/configure.ac b/configure.ac >> index 9a2235b..22a6f17 100644 >> --- a/configure.ac >> +++ b/configure.ac >> @@ -186,6 +186,7 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\ >> -Wno-unused-parameter \ >> -Wno-missing-field-initializers \ >> -Wno-unused-result \ >> + -Wno-format-signedness \ > This doesn't really work, as discussed previously on the list.
Why? Works fine with gcc4 and gcc5 here. What's the problem exactly? Thanks David _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
