[Bug middle-end/37500] New: [4.4 Regression] libstdc++ failed to compile at -O0

["hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

On Linux/x86-64, libstdc++ failed to compile at -O0:

[hjl@gnu-6 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.
[hjl@gnu-6 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