https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100148
Bug ID: 100148 Summary: [10/11 Regression] -fcompare-debug failure (length) with -O2 -fno-dce -fno-tree-dce -fno-tree-dominator-opts -fno-tree-sink Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz CC: aoliva at gcc dot gnu.org Target Milestone: --- Host: x86_64-pc-linux-gnu Created attachment 50630 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50630&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O2 -fno-dce -fno-tree-dce -fno-tree-dominator-opts -fno-tree-sink -fcompare-debug testcase.C x86_64-pc-linux-gnu-gcc: error: testcase.C: '-fcompare-debug' failure (length) $ x86_64-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r11-8244-20210419132718-g714bdc31b69-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/11.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld --with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r11-8244-20210419132718-g714bdc31b69-checking-yes-rtl-df-extra-amd64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.0.1 20210419 (experimental) (GCC)