On 27-10-15 21:25, Martin Jansa wrote:
On Tue, Oct 27, 2015 at 08:57:42PM +0100, Martin Jansa wrote:
On Tue, Oct 27, 2015 at 11:26:32AM -0700, Khem Raj wrote:
On Tue, Oct 27, 2015 at 11:21 AM, Martin Jansa <[email protected]> wrote:
On Sat, Sep 05, 2015 at 02:39:14PM +0200, Mike Looijmans wrote:
I got this weird build failure from the "krb" package:
| make[3]: Entering directory
'/TOPDIR/build/tmp/work/mips32el-oe-linux/krb5/1.13.2-r0/krb5-1.13.2/src/lib/krb5/ccache'
| mipsel-oe-linux-gcc -mel -mabi=32 -mhard-float -march=mips32
--sysroot=/TOPDIR/build/tmp/sysroots/formuler1 -fPIC -DSHARED
-DHAVE_CONFIG_H -I../../../include -I../../../include -I./ccapi -I. -I.
-DKRB5_DEPRECATED=1 -DKRB5_PRIVATE -Os -pipe -g
-feliminate-unused-debug-types -DDESTRUCTOR_ATTR_WORKS=1
-I/TOPDIR/build/tmp/sysroots/formuler1/usr/include/et -Wall -Wcast-align
-Wshadow -Wmissing-prototypes -Wno-format-zero-length -Woverflow
-Wstrict-overflow -Wmissing-format-attribute -Wmissing-prototypes
-Wreturn-type -Wmissing-braces -Wparentheses -Wswitch -Wunused-function
-Wunused-label -Wunused-variable -Wunused-value -Wunknown-pragmas
-Wsign-compare -Werror=uninitialized -Werror=pointer-arith
-Werror=declaration-after-statement
-Werror-implicit-function-declaration -pthread -c cc_file.c -o
cc_file.so.o && mv -f cc_file.so.o cc_file.so
| cc_file.c: In function 'fcc_next_cred':
| cc_file.c:368:9: error: 'maxsize' may be used uninitialized in this
function [-Werror=maybe-uninitialized]
| ret = load_data(context, id, maxsize, buf);
| ^
| cc_file.c:1091:12: note: 'maxsize' was declared here
| size_t maxsize;
| ^
| cc1: some warnings being treated as errors
Looking at the source, this doesn't make any sense at all. The
declaration of the variable isn't even in the same method body. And the
line it complains about is about the fifth time it passes that variable
to another method.
And working around it by initializing maxsize=0 just makes the compiler
choke on a similar situation elsewhere:
| packet.c:50:67: error: 'id' may be used uninitialized in this function
I suspect the problem here is GCC and not the krb code. Anyone seen this?
I've seen it today in my world builds, It seems to fail only when building with
-Os.
I've seen similar issue in mdadm, also only with -Os.
is this regression ? or seen for first time?
krb5 fails to build like this with -Os at least since dizzy
Since the move to gcc5 this fails. This workaround makes the build pass once
more:
https://github.com/OpenPLi/openpli-oe-core/commit/781fea2e5e5e9a18ee905a01b1e2ee80b3aa4721
...
Quick grep in my last -Os world build shows 2 more recipes with
similar issue (smbnetfs is failing in krb5 dependency already):
...
I suspect the bug is in GCC, not in the code of these recipes.
Kind regards,
Mike Looijmans
System Expert
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