https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61207
--- Comment #4 from Thomas Petazzoni <thomas.petazz...@free-electrons.com> --- (In reply to Kai Tietz from comment #3) > Hmm, does it help to specify additional option '-fno-ms-extensions'? No, it doesn't help. In fact in my case, it isn't a -Os problem, but a -O3 problem. I had both the compile command line, with -O3 being last. So in the end, I tested the following cases: * -O2 -> builds fine * -Os -> builds fine * -O3 -> breaks * -O3 -fno-ms-extensions -> breaks If you want to have a look at the code, I've put the pre-processed version of the file at http://free-electrons.com/~thomas/pub/SVGAllInOne.cpp.xz. I'm able to reproduce the bug under Ubuntu, using the Ubuntu ARM g++ compiler, which uses gcc 4.9.1 : # Default -> OK thomas@skate:/tmp$ arm-linux-gnueabihf-g++ -c SVGAllInOne.cpp # -O2 -> OK thomas@skate:/tmp$ arm-linux-gnueabihf-g++ -O2 -c SVGAllInOne.cpp # -Os -> OK thomas@skate:/tmp$ arm-linux-gnueabihf-g++ -Os -c SVGAllInOne.cpp # -O3 -> NOK thomas@skate:/tmp$ arm-linux-gnueabihf-g++ -O3 -c SVGAllInOne.cpp In file included from svg/SVGAnimateMotionElement.cpp:37:0, from svg/SVGAllInOne.cpp:36: svg/SVGPathElement.h: In member function ‘virtual WebCore::FloatRect WebCore::SVGPathElement::_ZTv0_n24_N7WebCore14SVGPathElement7getBBoxENS_12SVGLocatable19StyleUpdateStrategyE(WebCore::SVGLocatable::StyleUpdateStrategy)’: svg/SVGPathElement.h:95:23: internal compiler error: in expand_expr_addr_expr_1, at expr.c:7649 Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.9/README.Bugs> for instructions. Preprocessed source stored into /tmp/cccMXXZg.out file, please attach this to your bugreport. # -O3 -fno-ms-extensions -> NOK thomas@skate:/tmp$ arm-linux-gnueabihf-g++ -O3 -fno-ms-extensions -c SVGAllInOne.cpp In file included from svg/SVGAnimateMotionElement.cpp:37:0, from svg/SVGAllInOne.cpp:36: svg/SVGPathElement.h: In member function ‘virtual WebCore::FloatRect WebCore::SVGPathElement::_ZTv0_n24_N7WebCore14SVGPathElement7getBBoxENS_12SVGLocatable19StyleUpdateStrategyE(WebCore::SVGLocatable::StyleUpdateStrategy)’: svg/SVGPathElement.h:95:23: internal compiler error: in expand_expr_addr_expr_1, at expr.c:7649 Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.9/README.Bugs> for instructions. Beware that the C++ source file is 7 MB in size, and takes a little while to build: $ time arm-linux-gnueabihf-g++ -O2 -c SVGAllInOne.cpp real 0m32.544s user 0m32.032s sys 0m0.431s
