On 1 Feb 2017 at 14:52, Arnd Bergmann wrote: > On my ARM test builds (using a recent gcc-7 snapshot), allmodconfig failed > with a compiler > crash, I have managed to minimize the test case to this: > > /home/arnd/cross-gcc/bin/arm-linux-gnueabi-gcc-7.0.1 -O2 -Wall > -fplugin=/home/arnd/arm-soc/build/tmp/scripts/gcc-plugins/initify_plugin.so > -DINITIFY_PLUGIN > -fplugin-arg-initify_plugin-search_init_exit_functions > -fno-inline-functions-called-once -S atmel_lcdfb.i > arm-linux-gnueabi-gcc-7.0.1: internal compiler error: Segmentation fault > (program cc1) > [...] > > While trying to reproduce it, one time I ended up killing the gcc task when it > used more than 80 gigabytes (!) of memory after around six minutes of > compiling > the same file (drivers/video/fbdev/atmel_lcdfb.c), but other times it just > crashed > as above using various ARM cross compilers (4.9.3, 5.3, 6.1.1).
i tried to reproduce it with 5.4 and 6.3 to no avail (arm64->arm cross compiler) so some more information will be needed. first, which plugin version did you try? second, if you build your own gcc, can you configure one with this additional option: --enable-checking=assert,df,gimple,misc,rtl,rtlflag,runtime,tree,types this will enable lots of compile time self-checking in gcc and may pinpoint the problem sooner (it also increases compile time so you probably want to keep this gcc as a separate build from your main one).
