Host: x86_64, Ubuntu Linux 9.10 Target: lm32-elf GCC 4.5.0 ../configure --prefix=/opt/lm32 --target=lm32-elf --enable-languages=c,c++ --with-newlib --enable-sjlj-exceptions
As reported on the Milkymist mailing list, gcc-4.5.0 is unable to build the Milkymist branch of the Linux kernel (http://github.com/tmatsuya/linux-2.6). This manifests itself as an Internal Compiler Error when compiling fs/timerfd.c: make -f scripts/Makefile.build obj=fs/sysfs lm32-elf-gcc -Wp,-MD,fs/.timerfd.o.d -nostdinc -isystem /opt/lm32/lib/gcc/lm32-elf/4.5.0/include -I/home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include -Iinclude -include include/generated/autoconf.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -Wframe-larger-than=1024 -fno-stack-protector -fomit-frame-pointer -g -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(timerfd)" -D"KBUILD_MODNAME=KBUILD_STR(timerfd)" -c -o fs/timerfd.o fs/timerfd.c fs/timerfd.c: In function timerfd_poll: fs/timerfd.c:105:1: error: unrecognizable insn: (insn 44 43 45 5 fs/timerfd.c:94 (set (reg:SI 68) (subreg:SI (mem/s:DI (plus:SI (reg/v/f:SI 39 [ ctx ]) (const_int 64 [0x40])) [0 S8 A64]) 4)) -1 (nil)) fs/timerfd.c:105:1: internal compiler error: in extract_insn, at recog.c:2103 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. make[1]: *** [fs/timerfd.o] Error 1 make: *** [fs] Error 2 And from the command line with "-v -save-temps": phil...@cheetah:~/lm32/KERNELBUILD/linux-2.6$ lm32-elf-gcc -v -save-temps -Wp,-MD,fs/.timerfd.o.d -nostdinc -isystem /opt/lm32/lib/gcc/lm32-elf/4.5.0/include -I/home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include -Iinclude -include include/generated/autoconf.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -Wframe-larger-than=1024 -fno-stack-protector -fomit-frame-pointer -g -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(timerfd)" -D"KBUILD_MODNAME=KBUILD_STR(timerfd)" -save-temps -c -o fs/timerfd.o fs/timerfd.c Using built-in specs. COLLECT_GCC=lm32-elf-gcc COLLECT_LTO_WRAPPER=/opt/lm32/libexec/gcc/lm32-elf/4.5.0/lto-wrapper Target: lm32-elf Configured with: ../configure --prefix=/opt/lm32 --target=lm32-elf --enable-languages=c,c++ --with-newlib --enable-sjlj-exceptions Thread model: single gcc version 4.5.0 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-nostdinc' '-isystem' '/opt/lm32/lib/gcc/lm32-elf/4.5.0/include' '-I/home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include' '-Iinclude' '-include' 'include/generated/autoconf.h' '-D__KERNEL__' '-Wall' '-Wundef' '-Wstrict-prototypes' '-Wno-trigraphs' '-fno-strict-aliasing' '-fno-common' '-Werror-implicit-function-declaration' '-Wno-format-security' '-fno-delete-null-pointer-checks' '-O2' '-Wframe-larger-than=1024' '-fno-stack-protector' '-fomit-frame-pointer' '-g' '-Wdeclaration-after-statement' '-Wno-pointer-sign' '-fno-strict-overflow' '-fno-dwarf2-cfi-asm' '-fconserve-stack' '-DKBUILD_STR(s)=#s' '-DKBUILD_BASENAME=KBUILD_STR(timerfd)' '-DKBUILD_MODNAME=KBUILD_STR(timerfd)' '-save-temps' '-c' '-o' 'fs/timerfd.o' /opt/lm32/libexec/gcc/lm32-elf/4.5.0/cc1 -E -quiet -nostdinc -v -I/home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include -Iinclude -D__KERNEL__ -DKBUILD_STR(s)=#s -DKBUILD_BASENAME=KBUILD_STR(timerfd) -DKBUILD_MODNAME=KBUILD_STR(timerfd) -isystem /opt/lm32/lib/gcc/lm32-elf/4.5.0/include -include include/generated/autoconf.h -MD fs/.timerfd.o.d fs/timerfd.c -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -Werror-implicit-function-declaration -Wno-format-security -Wframe-larger-than=1024 -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-aliasing -fno-common -fno-delete-null-pointer-checks -fno-stack-protector -fomit-frame-pointer -fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -g -fworking-directory -O2 -fpch-preprocess -o timerfd.i #include "..." search starts here: #include <...> search starts here: /home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include include /opt/lm32/lib/gcc/lm32-elf/4.5.0/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-nostdinc' '-isystem' '/opt/lm32/lib/gcc/lm32-elf/4.5.0/include' '-I/home/philpem/lm32/KERNELBUILD/linux-2.6/arch/lm32/include' '-Iinclude' '-include' 'include/generated/autoconf.h' '-D__KERNEL__' '-Wall' '-Wundef' '-Wstrict-prototypes' '-Wno-trigraphs' '-fno-strict-aliasing' '-fno-common' '-Werror-implicit-function-declaration' '-Wno-format-security' '-fno-delete-null-pointer-checks' '-O2' '-Wframe-larger-than=1024' '-fno-stack-protector' '-fomit-frame-pointer' '-g' '-Wdeclaration-after-statement' '-Wno-pointer-sign' '-fno-strict-overflow' '-fno-dwarf2-cfi-asm' '-fconserve-stack' '-DKBUILD_STR(s)=#s' '-DKBUILD_BASENAME=KBUILD_STR(timerfd)' '-DKBUILD_MODNAME=KBUILD_STR(timerfd)' '-save-temps' '-c' '-o' 'fs/timerfd.o' /opt/lm32/libexec/gcc/lm32-elf/4.5.0/cc1 -fpreprocessed timerfd.i -quiet -dumpbase timerfd.c -auxbase-strip fs/timerfd.o -g -O2 -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -Werror-implicit-function-declaration -Wno-format-security -Wframe-larger-than=1024 -Wdeclaration-after-statement -Wno-pointer-sign -version -fno-strict-aliasing -fno-common -fno-delete-null-pointer-checks -fno-stack-protector -fomit-frame-pointer -fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -o timerfd.s GNU C (GCC) version 4.5.0 (lm32-elf) compiled by GNU C version 4.4.1, GMP version 4.3.1, MPFR version 2.4.1-p2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C (GCC) version 4.5.0 (lm32-elf) compiled by GNU C version 4.4.1, GMP version 4.3.1, MPFR version 2.4.1-p2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 82b2fc76371f663ecc11fc912a8ee928 fs/timerfd.c: In function timerfd_poll: fs/timerfd.c:105:1: error: unrecognizable insn: (insn 44 43 45 5 fs/timerfd.c:94 (set (reg:SI 68) (subreg:SI (mem/s:DI (plus:SI (reg/v/f:SI 39 [ ctx ]) (const_int 64 [0x40])) [0 S8 A64]) 4)) -1 (nil)) fs/timerfd.c:105:1: internal compiler error: in extract_insn, at recog.c:2103 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. This kernel compiles fine with gcc 3.4.0 and the lm32 patch which was published on the GCC mailing list. Removing "-O2" from the command line allows gcc to pass the ICE and compile successfully. -- Summary: ICE when building Linux kernel 2.6.34-rc4 Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: philpem at philpem dot me dot uk http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43805
