Hello, x86_64-w64-mingw32-gcc from the mingw64-gcc-7.2.0-1.fc27.x86_64 package on Fedora 27 is reporting the following error in compiling some of our code:
internal compiler error: in get_constraint_for_ptr_offset, at tree-ssa-structalias.c:3155 Is this the right place to ask about the bug? Assuming so, here is some more information. We see this on Fedora 27 with the standard package: $ x86_64-w64-mingw32-gcc -v Using built-in specs. COLLECT_GCC=x86_64-w64-mingw32-gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-w64-mingw32/7.2.0/lto-wrapper Target: x86_64-w64-mingw32 Configured with: ../configure --prefix=/usr --bindir=/usr/bin --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose --without-newlib --disable-multilib --disable-plugin --with-system-zlib --disable-nls --without-included-gettext --disable-win32-registry --enable-languages=c,c++,objc,obj-c++,fortran --with-bugurl= http://bugzilla.redhat.com/bugzilla --with-cloog --enable-threads=posix --enable-libgomp --target=x86_64-w64-mingw32 --with-sysroot=/usr/x86_64-w64-mingw32/sys-root --with-gxx-include-dir=/usr/x86_64-w64-mingw32/sys-root/mingw/include/c++ Thread model: posix gcc version 7.2.0 20170814 (Fedora MinGW 7.2.0-1.fc27) (GCC) We also see the same issue on Fedora 25 $ x86_64-w64-mingw32-gcc -v Using built-in specs. COLLECT_GCC=x86_64-w64-mingw32-gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-w64-mingw32/6.4.0/lto-wrapper Target: x86_64-w64-mingw32 Configured with: ../configure --prefix=/usr --bindir=/usr/bin --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose --without-newlib --disable-multilib --disable-plugin --with-system-zlib --disable-nls --without-included-gettext --disable-win32-registry --enable-languages=c,c++,objc,obj-c++,fortran --with-bugurl= http://bugzilla.redhat.com/bugzilla --with-cloog --enable-threads=posix --enable-libgomp --target=x86_64-w64-mingw32 --with-sysroot=/usr/x86_64-w64-mingw32/sys-root --with-gxx-include-dir=/usr/x86_64-w64-mingw32/sys-root/mingw/include/c++ Thread model: posix gcc version 6.4.0 20170704 (Fedora MinGW 6.4.0-1.fc25) (GCC) We do not see the issue on Fedora 21: $ x86_64-w64-mingw32-gcc -v Using built-in specs. COLLECT_GCC=x86_64-w64-mingw32-gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-w64-mingw32/4.9.2/lto-wrapper Target: x86_64-w64-mingw32 Configured with: ../configure --prefix=/usr --bindir=/usr/bin --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --with-gnu-as --with-gnu-ld --verbose --without-newlib --disable-multilib --disable-plugin --with-system-zlib --disable-nls --without-included-gettext --disable-win32-registry --enable-languages=c,c++,objc,obj-c++,fortran --with-bugurl= http://bugzilla.redhat.com/bugzilla --with-cloog --enable-threads=posix --enable-libgomp --target=x86_64-w64-mingw32 --with-sysroot=/usr/x86_64-w64-mingw32/sys-root --with-gxx-include-dir=/usr/x86_64-w64-mingw32/sys-root/mingw/include/c++ Thread model: posix gcc version 4.9.2 20141030 (Fedora MinGW 4.9.2-1.fc21) (GCC) We only see the issue when optimization is enabled. When building the same code natively using gcc on CentOS 6 and 7 and Fedora 21, 26, and 27, we see no such error. I do not have a pared-down, stand-alone case that reproduces the issue, nor do I have a clear correlation with any particular code pattern. Could anyone shed any light on what this error means, so that I might have a better chance of working around it? Thank you, Matt ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
