http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59602
Bug ID: 59602 Summary: ARM, __attribute__((interrupt("FIQ"))) causes internal compiler error with -O0 Product: gcc Version: 4.8.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: Sergey.Belyashov at gmail dot com I try to compile simple program. If I use some level of optimization more than zero then no problem. But without optimization compiler dies: $ arm-none-eabi-gcc -O0 -marm -march=armv4 -nostdlib -std=gnu99 -c -o bootldr.o bootldr.c bootldr.c: In function 'fiqHandler': bootldr.c:5:1: error: insn does not satisfy its constraints: } ^ (insn 13 12 14 (set (reg/f:SI 13 sp) (plus:SI (reg/f:SI 11 fp) (const_int 4 [0x4]))) bootldr.c:5 5 {*arm_addsi3} (nil)) bootldr.c:5:1: internal compiler error: in note_invalid_constants, at config/arm/arm.c:15751 $ cat bootldr.c void fiqHandler(void) __attribute__ ((interrupt("FIQ"))); void fiqHandler(void) { __asm__ volatile("nop"); } $ arm-none-eabi-gcc -v Using built-in specs. COLLECT_GCC=arm-none-eabi-gcc COLLECT_LTO_WRAPPER=/usr/bin/../lib/gcc/arm-none-eabi/4.8.3/lto-wrapper Target: arm-none-eabi Configured with: /build/buildd/gcc-arm-none-eabi-4-8-2013q4/src/gcc/configure --target=arm-none-eabi --prefix=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native --libexecdir=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/lib --infodir=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/share/doc/gcc-arm-none-eabi/info --mandir=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/share/doc/gcc-arm-none-eabi/man --htmldir=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/share/doc/gcc-arm-none-eabi/html --pdfdir=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/share/doc/gcc-arm-none-eabi/pdf --enable-languages=c,c++ --enable-plugins --disable-decimal-float --disable-libffi --disable-libgomp --disable-libmudflap --disable-libquadmath --disable-libssp --disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads --disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes --with-python-dir=share/gcc-arm-none-eabi --with-sysroot=/build/buildd/gcc-arm-none-eabi-4-8-2013q4/install-native/arm-none-eabi --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-pkgversion='GNU Tools for ARM Embedded Processors' --with-multilib-list=armv6-m,armv7-m,armv7e-m,armv7-r Thread model: single gcc version 4.8.3 20131129 (release) [ARM/embedded-4_8-branch revision 205641] (GNU Tools for ARM Embedded Processors) $ lsb_release -d Description: Ubuntu 12.04.3 LTS