[I isolated the compiler crash down to a 20 line program that makes the assert fail.]
On 2018-Nov-22, at 13:03, Mark Millard <marklmi at yahoo.com> wrote: > During a (native) poudriere-devel run I got the following failure. > [Unfortunately clang and poudriere are mismatched for where the > preprocessed source(s) and run script(s) are placed as far as > what is in the poudriere tar archive produced. But I did have > kern.corefile set so that the core file was captured.] > > This happens to be on powerpc64 where I experiment with using > fairly modern cc/c++ and the like. devel/powerpc64-xtoolchain-gcc > was used for buildworld buildkernel and clang was built as cc. > But the system binutils is from base/binutils . So not an official > gcc 4.2.1 toolchain context, more of a futures-testing context. > > The error report from clang (after 332 other ports had built): > > cc: error: unable to execute command: Abort trap (core dumped) > cc: error: clang frontend command failed due to signal (use -v to see > invocation) > FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on LLVM > 6.0.1) > Target: powerpc64-unknown-freebsd13.0 > Thread model: posix > InstalledDir: /usr/bin > cc: note: diagnostic msg: PLEASE submit a bug report to > https://bugs.freebsd.org/submit/ and include the crash backtrace, > preprocessed source, and associated run script. > cc: note: diagnostic msg: > ******************** > > PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: > Preprocessed source(s) and associated run script(s) are located at: > cc: note: diagnostic msg: /tmp/vf_convolution-9639c0.c > cc: note: diagnostic msg: /tmp/vf_convolution-9639c0.sh > cc: note: diagnostic msg: > > ******************** > gmake[1]: *** [ffbuild/common.mak:60: libavfilter/vf_convolution.o] Error 254 > gmake[1]: *** Waiting for unfinished jobs.... > gmake[1]: Leaving directory > '/wrkdirs/usr/ports/multimedia/ffmpeg/work/ffmpeg-4.1' > ===> Compilation failed unexpectedly. > Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to > the maintainer. > *** Error code 1 > > . . . > I isolated the system-clang crash down to a 15 line program that makes the assert fail for the reduced command: "/usr/bin/cc" "-cc1" "-emit-obj" "-target-cpu" "ppc64" "-O1" "-vectorize-loops" "vf_convolution-mmjnk.c" ( -O2 and -O3 also cause the failure. ) # more vf_convolution-mmjnk.c double sqrt(double); static void filter_sobel(unsigned char *dst, int width, const unsigned char *c[]) { const unsigned char *c0 = c[0], *c1 = c[1]; int x; for (x = 0; x < width; x++) { dst[x] = sqrt(c0[x] * -1 + c1[x] * -2); } } void (*mmjnk)(unsigned char *dst, int width, const unsigned char *c[]) = filter_sobel; The error reported is: Assertion failed: (isSimple() && "Expected a SimpleValueType!"), function getSimpleVT, file /usr/src/contrib/llvm/include/llvm/CodeGen/ValueTypes.h, line 254. Abort trap (core dumped) === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar) _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
