[Pkg-xen-devel] Bug#778181: xen: ftbfs with GCC-5

[Matthias Klose]

Package: src:xen
Version: 4.4.1-6
Severity: normal
Tags: sid stretch
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-5

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-5/g++-5, but succeeds to build with gcc-4.9/g++-4.9. The
severity of this report may be raised before the stretch release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc5-20150205/xen_4.4.1-6_unstable_gcc5.log
The last lines of the build log are at the end of this report.

To build with GCC 5, either set CC=gcc-5 CXX=g++-5 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t experimental install g++ 

Common build failures are C11 as the default C mode, new warnings
resulting in build failures with -Werror turned on, or new/dropped
symbols in Debian symbols files.  For other C/C++ related build failures
see the porting guide at http://gcc.gnu.org/gcc-5/porting_to.html

[...]
objdump -h reloc.o | sed -n '/[0-9]/{s,00*,0,g;p}' |\
	while read idx name sz rest; do \
		case "$name" in \
		.data|.data.*|.rodata|.rodata.*|.bss|.bss.*) \
			test $sz != 0 || continue; \
			echo "Error: non-empty $name: 0x$sz" >&2; \
			exit $(expr $idx + 1);; \
		esac; \
	done
ld -melf_i386 -N -Ttext 0 -o reloc.lnk reloc.o
objcopy -O binary reloc.lnk reloc.bin
(od -v -t x reloc.bin | tr -s ' ' | awk 'NR > 1 {print s} {s=$0}' | \
sed 's/ /,0x/g' | sed 's/,0x$//' | sed 's/^[0-9]*,/ .long /') >reloc.S
make[7]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/boot'
gcc -D__ASSEMBLY__ -include /«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/xen/config.h -O2 -fomit-frame-pointer -m64 -fno-strict-aliasing -Wall -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-but-set-variable -Wno-unused-local-typedefs -DNDEBUG -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/asm-x86/mach-generic -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/asm-x86/mach-default -msoft-float -fno-stack-protector -fno-exceptions -Wnested-externs -DHAVE_GAS_VMX -DHAVE_GAS_EPT -DHAVE_GAS_FSGSBASE -mno-red-zone -mno-sse -fpic -fno-asynchronous-unwind-tables -DGCC_HAS_VISIBILITY_ATTRIBUTE -fno-builtin -fno-common -Werror -Wredundant-decls -Wno-pointer-arith -pipe -g -D__XEN__ -include /«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/xen/config.h -nostdinc -DHAS_ACPI -DHAS_GDBSX -DHAS_PASSTHROUGH -DHAS_PCI -DHAS_IOPORTS -MMD -MF .head.o.d -c head.S -o head.o
ld    -melf_x86_64  -r -o built_in.o head.o
make[6]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/boot'
/usr/bin/make -f /«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/Rules.mk -C /«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/efi built_in.o
make[6]: Entering directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/efi'
gcc -O2 -fomit-frame-pointer -m64 -fno-strict-aliasing -std=gnu99 -Wall -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-but-set-variable -Wno-unused-local-typedefs   -DNDEBUG -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include  -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/asm-x86/mach-generic -I/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/asm-x86/mach-default -msoft-float -fno-stack-protector -fno-exceptions -Wnested-externs -DHAVE_GAS_VMX -DHAVE_GAS_EPT -DHAVE_GAS_FSGSBASE -mno-red-zone -mno-sse -fpic -fno-asynchronous-unwind-tables -DGCC_HAS_VISIBILITY_ATTRIBUTE -fno-builtin -fno-common -Werror -Wredundant-decls -Wno-pointer-arith -pipe -g -D__XEN__ -include /«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/include/xen/config.h -nostdinc -DHAS_ACPI -DHAS_GDBSX -DHAS_PASSTHROUGH -DHAS_PCI -DHAS_IOPORTS -MMD -MF .boot.o.d -fshort-wchar -DINIT_SECTIONS_ONLY -c boot.c -o boot.o
objdump -h boot.o | sed -n '/[0-9]/{s,00*,0,g;p}' | while read idx name sz rest; do \
	case "$name" in \
	.text|.text.*|.data|.data.*|.bss) \
		test $sz != 0 || continue; \
		echo "Error: size of boot.o:$name is 0x$sz" >&2; \
		exit $(expr $idx + 1);; \
	esac; \
done
Error: size of boot.o:.text is 0x01e9
make[6]: *** [boot.init.o] Error 1
/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/Rules.mk:174: recipe for target 'boot.init.o' failed
make[6]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/efi'
make[5]: *** [/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/efi/built_in.o] Error 2
/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/Rules.mk:153: recipe for target '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86/efi/built_in.o' failed
make[5]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/arch/x86'
make[4]: *** [/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/xen] Error 2
Makefile:100: recipe for target '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen/xen' failed
make[4]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen'
make[3]: *** [build] Error 2
Makefile:26: recipe for target 'build' failed
make[3]: Leaving directory '/«PKGBUILDDIR»/debian/build/build-hypervisor_amd64_amd64/xen'
make[2]: *** [debian/stamps/build-hypervisor_amd64_amd64] Error 2
debian/rules.real:83: recipe for target 'debian/stamps/build-hypervisor_amd64_amd64' failed
make[2]: Leaving directory '/«PKGBUILDDIR»'
make[1]: *** [build-arch_amd64_none_amd64] Error 2
debian/rules.gen:50: recipe for target 'build-arch_amd64_none_amd64' failed
make[1]: Leaving directory '/«PKGBUILDDIR»'
make: *** [build-arch] Error 2
debian/rules:20: recipe for target 'build-arch' failed
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2