[Pkg-gpe-maintainers] Bug#643426: libgpevtype: FTBFS: vcal.c:88:7: error: format not a string literal and no format arguments [-Werror=format-security]

[Didier Raboud]

Source: libgpevtype
Version: 0.50-5
Severity: serious
Tags: wheezy sid
User: debian-qa at lists.debian.org
Usertags: qa-ftbfs-20110923 qa-ftbfs hardening-format-security hardening
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part:
>  gcc -DPACKAGE_NAME=\"libgpevtype\" -DPACKAGE_TARNAME=\"libgpevtype\" -DPACKAGE_VERSION=\"0.50\" "-DPACKAGE_STRING=\"libgpevtype 0.50\"" -DPACKAGE_BUGREPORT=\"gpe-list at linuxtogo.org\" -DPACKAGE=\"libgpevtype\" -DVERSION=\"0.50\" -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -I. -I. -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/mimedir-1.0 -DPACKAGE_LOCALE_DIR=\"/usr/share/locale/libgpevtype\" -g -O2 -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security -Wall -c vcal.c  -fPIC -DPIC -o .libs/vcal.o
> vcal.c: In function 'cal_import_from_vmimedir':
> vcal.c:88:7: error: format not a string literal and no format arguments [-Werror=format-security]
> cc1: some warnings being treated as errors
> 
> make[2]: *** [vcal.lo] Error 1

The full build log is available from:
   http://people.debian.org/~lucas/logs/2011/09/23/libgpevtype_0.50-5_lsid64.buildlog

This happened because since dpkg 1.16.0 [0], hardening flags are enabled 
under various conditions.

[0] http://lists.debian.org/debian-devel-announce/2011/09/msg00001.html

A list of current common problems and possible solutions is available at 
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on about 50 AMD64 nodes
of the Grid'5000 platform, using a clean chroot.  Internet was not
accessible from the build systems.