[Bug middle-end/46667] [4.6 Regression] -freorder-blocks-and-partition -g failed and libstdc++ builds for arm-eabi are broken.

["ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46667

--- Comment #7 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2010-12-02 17:52:38 UTC ---
Here's the backtrace I see for arm-eabi.


#0  error (gmsgid=0xf323c8 "%+D causes a section type conflict") at
../../combined/gcc/diagnostic.c:747
#1  0x0000000000affd0d in get_section (name=0xf324e2 ".text.unlikely",
flags=2099456, decl=0x2ba5b228f900) at ../../combined/gcc/varasm.c:301
#2  0x0000000000afff64 in get_named_section (decl=0x2ba5b228f900, name=0xf324e2
".text.unlikely", reloc=0) at ../../combined/gcc/varasm.c:392
#3  0x0000000000b007ea in get_named_text_section (decl=0x2ba5b228f900,
text_section_name=0xf324e2 ".text.unlikely", named_section_suffix=0x0)
    at ../../combined/gcc/varasm.c:531
#4  0x0000000000b00880 in default_function_section (decl=0x2ba5b228f900,
freq=NODE_FREQUENCY_UNLIKELY_EXECUTED, startup=0 '\0', exit=0 '\0')
    at ../../combined/gcc/varasm.c:554
#5  0x0000000000b00955 in function_section_1 (decl=0x2ba5b228f900, force_cold=1
'\001') at ../../combined/gcc/varasm.c:605
#6  0x0000000000b009b8 in current_function_section () at
../../combined/gcc/varasm.c:635
#7  0x0000000000b39835 in arm_is_long_call_p (decl=0x2ba5b225cd00) at
../../combined/gcc/config/arm/arm.c:5001
#8  0x0000000000b39937 in arm_function_ok_for_sibcall (decl=0x2ba5b225cd00,
exp=0x2ba5b2a84370) at ../../combined/gcc/config/arm/arm.c:5033
#9  0x00000000006b1a4b in expand_call (exp=0x2ba5b2a84370, target=0x0,
ignore=1) at ../../combined/gcc/calls.c:2306
#10 0x00000000007614e0 in expand_expr_real_1 (exp=0x2ba5b2a84370, target=0x0,
tmode=VOIDmode, modifier=EXPAND_NORMAL, alt_rtl=0x0) at
../../combined/gcc/expr.c:9299
#11 0x00000000006c2796 in expand_gimple_stmt (stmt=0x2ba5b22caee0) at
../../combined/gcc/cfgexpand.c:1916
#12 0x00000000006c342b in expand_gimple_basic_block (bb=0x2ba5b253e548) at
../../combined/gcc/cfgexpand.c:2154
#13 0x00000000006c47b8 in gimple_expand_cfg () at
../../combined/gcc/cfgexpand.c:4046
#14 0x0000000000897d6f in execute_one_pass (pass=0x136b600) at
../../combined/gcc/passes.c:1553
#15 0x0000000000898065 in execute_pass_list (pass=0x136b600) at
../../combined/gcc/passes.c:1608
#16 0x000000000099c576 in tree_rest_of_compilation (fndecl=0x2ba5b228f900) at
../../combined/gcc/tree-optimize.c:422
#17 0x0000000000b4d650 in cgraph_expand_function (node=0x2ba5b2465420) at
../../combined/gcc/cgraphunit.c:1508
#18 0x0000000000b50469 in cgraph_optimize () at
../../combined/gcc/cgraphunit.c:1567
#19 0x0000000000b5089d in cgraph_finalize_compilation_unit () at
../../combined/gcc/cgraphunit.c:1031
#20 0x0000000000548c67 in cp_write_global_declarations () at
../../combined/gcc/cp/decl2.c:3973
#21 0x0000000000940051 in toplev_main (argc=25, argv=0x7ffff9418f78) at
../../combined/gcc/toplev.c:591
#22 0x000000350401d974 in __libc_start_main () from /lib64/libc.so.6
#23 0x000000000048a669 in _start ()

In a compiler configured in a combined tree with :

../combined/configure --with-newlib --target=arm-eabi --with-cpu=cortex-a9
--with-fpu=vfpv3-d16 --with-float=softfp
--with-gmp=/projects/pl802_weddell/tools/linux_x86_64
--with-mpfr=/projects/pl802_weddell/tools/linux_x86_64
--with-mpc=/projects/pl802_weddell/tools/linux_x86_64 --enable-languages=c,c++