On Linux/x86-64, libstdc++ failed to compile at -O0: [EMAIL PROTECTED] gcc-work]$ /export/build/gnu/gcc-work/build-x86_64-linux/./gcc/xgcc -shared-libgcc -B/export/build/gnu/gcc-work/build-x86_64-linux/./gcc -nostdinc++ -L/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/src -L/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/bin/ -B/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/lib/ -isystem /usr/gcc-4.4-work/x86_64-unknown-linux-gnu/include -isystem /usr/gcc-4.4-work/x86_64-unknown-linux-gnu/sys-include -I/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/include -I/export/gnu/src/gcc-work/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -O0 -D_GNU_SOURCE -c /export/gnu/src/gcc-work/gcc/libstdc++-v3/src/compatibility.cc -fPIC -DPIC -o .libs/compatibility.o /export/gnu/src/gcc-work/gcc/libstdc++-v3/src/compatibility.cc:408: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [EMAIL PROTECTED] gcc-work]$ Program received signal SIGSEGV, Segmentation fault. 0x00000000004ed628 in ggc_free (p=<value optimized out>) at ../../src-trunk/gcc/ggc-page.c:1421 1421 pe->in_use_p[word] &= ~(1UL << bit); Missing separate debuginfos, use: debuginfo-install glibc.x86_64 gmp.x86_64 mpfr.x86_64 (gdb) bt #0 0x00000000004ed628 in ggc_free (p=<value optimized out>) at ../../src-trunk/gcc/ggc-page.c:1421 #1 0x00000000005233c1 in flow_loops_free (loops=0xff0620) at ../../src-trunk/gcc/cfgloop.c:217 #2 0x0000000000a1d2eb in rest_of_handle_ira () at ../../src-trunk/gcc/ira.c:1885 #3 0x00000000006374d8 in execute_one_pass (pass=0xf672a0) at ../../src-trunk/gcc/passes.c:1279 #4 0x0000000000637705 in execute_pass_list (pass=0xf672a0) at ../../src-trunk/gcc/passes.c:1327 #5 0x000000000063771d in execute_pass_list (pass=0xf625c0) at ../../src-trunk/gcc/passes.c:1328 #6 0x0000000000707487 in tree_rest_of_compilation (fndecl=0x7f3e946e2300) at ../../src-trunk/gcc/tree-optimize.c:418 #7 0x0000000000826554 in cgraph_expand_function (node=0x7f3e942d0700) at ../../src-trunk/gcc/cgraphunit.c:1038 #8 0x0000000000826764 in cgraph_output_in_order () at ../../src-trunk/gcc/cgraphunit.c:1186 #9 0x0000000000827cfd in cgraph_optimize () at ../../src-trunk/gcc/cgraphunit.c:1297 #10 0x0000000000451d6d in cp_write_global_declarations () at ../../src-trunk/gcc/cp/decl2.c:3608 #11 0x00000000006cce81 in toplev_main (argc=<value optimized out>, ---Type <return> to continue, or q <return> to quit--- argv=<value optimized out>) at ../../src-trunk/gcc/toplev.c:979 #12 0x000000342da1e32a in __libc_start_main () from /lib64/libc.so.6 #13 0x0000000000404369 in _start () (gdb)
-- Summary: [4.4 Regression] libstdc++ failed to compile at -O0 Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl dot tools at gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500