[Bug bootstrap/39849] segfault for '__divtf3' during bootstrap and non-bootstrap install

["dennis dot wassel at googlemail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #13 from dennis dot wassel at googlemail dot com  2009-05-04 14:55 -------
I just noticed/remembered that [x]gcc only drives the compilers, so I plugged
cc1 into gdb and here is the (somewhat messy, slightly edited) result:


gdb /localdata/install/gcc/gcc-4.4.0-build/./gcc/cc1

GNU gdb 6.8
This GDB was configured as "i686-pc-linux-gnu"...


run -quiet -v -I. -I. -I../.././gcc -I../../../gcc-4.4.0/libgcc
-I../../../gcc-4.4.0/libgcc/. -I../../../gcc-4.4.0/libgcc/../gcc
-I../../../gcc-4.4.0/libgcc/../include
-I../../../gcc-4.4.0/libgcc/config/libbid -iprefix
/localdata/install/gcc/gcc-4.4.0-build/gcc/../lib/gcc/i686-pc-linux-gnu/4.4.0/
-isystem /localdata/install/gcc/gcc-4.4.0-build/./gcc/include -isystem
/localdata/install/gcc/gcc-4.4.0-build/./gcc/include-fixed -MD divtf3.d -MF
divtf3.dep -MP -MT divtf3.o -DIN_GCC -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS
-DHIDE_EXPORTS -isystem /localdata/i686-pc-linux-gnu/include -isystem
/localdata/i686-pc-linux-gnu/sys-include -isystem ./include
../../../gcc-4.4.0/libgcc/../gcc/config/soft-fp/divtf3.c -quiet -dumpbase
divtf3.c -mtune=generic -auxbase-strip divtf3.o -g -g -g -O2 -O2 -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wcast-qual -Wold-style-definition
-Wno-missing-prototypes -Wno-type-limits -version -fPIC -fexceptions
-fvisibility=hidden -o /tmp/ccuJ4Jyu.s

Starting program: /localdata/install/gcc/gcc-4.4.0-build/gcc/cc1 -quiet -v -I.
-I. -I../.././gcc -I../../../gcc-4.4.0/libgcc -I../../../gcc-4.4.0/libgcc/.
-I../../../gcc-4.4.0/libgcc/../gcc -I../../../gcc-4.4.0/libgcc/../include
-I../../../gcc-4.4.0/libgcc/config/libbid -iprefix
/localdata/install/gcc/gcc-4.4.0-build/gcc/../lib/gcc/i686-pc-linux-gnu/4.4.0/
-isystem /localdata/install/gcc/gcc-4.4.0-build/./gcc/include -isystem
/localdata/install/gcc/gcc-4.4.0-build/./gcc/include-fixed -MD divtf3.d -MF
divtf3.dep -MP -MT divtf3.o -DIN_GCC -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS
-DHIDE_EXPORTS -isystem /localdata/i686-pc-linux-gnu/include -isystem
/localdata/i686-pc-linux-gnu/sys-include -isystem ./include
../../../gcc-4.4.0/libgcc/../gcc/config/soft-fp/divtf3.c -quiet -dumpbase
divtf3.c -mtune=generic -auxbase-strip divtf3.o -g -g -g -O2 -O2 -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wcast-qual -Wold-style-definition
-Wno-missing-prototypes -Wno-type-limits -version -fPIC -fexceptions
-fvisibility=hidden -o /tmp/ccuJ4Jyu.s

Failed to read a valid object file image from memory.

ignoring nonexistent directory "/localdata/i686-pc-linux-gnu/include"
ignoring nonexistent directory "/localdata/i686-pc-linux-gnu/sys-include"
ignoring nonexistent directory "./include"
ignoring nonexistent directory
"/localdata/install/gcc/gcc-4.4.0-build/gcc/../lib/gcc/i686-pc-linux-gnu/4.4.0/include"
ignoring nonexistent directory
"/localdata/install/gcc/gcc-4.4.0-build/gcc/../lib/gcc/i686-pc-linux-gnu/4.4.0/include-fixed"
ignoring nonexistent directory
"/localdata/install/gcc/gcc-4.4.0-build/gcc/../lib/gcc/i686-pc-linux-gnu/4.4.0/../../../../i686-pc-linux-gnu/include"
ignoring nonexistent directory
"/localdata/lib/gcc/i686-pc-linux-gnu/4.4.0/include"
ignoring nonexistent directory
"/localdata/lib/gcc/i686-pc-linux-gnu/4.4.0/include-fixed"
ignoring nonexistent directory
"/localdata/lib/gcc/i686-pc-linux-gnu/../../../i686-pc-linux-gnu/include"
ignoring duplicate directory "."
ignoring duplicate directory "../../../gcc-4.4.0/libgcc/."
#include "..." search starts here:
#include <...> search starts here:
 .
 ../.././gcc
 ../../../gcc-4.4.0/libgcc
 ../../../gcc-4.4.0/libgcc/../gcc
 ../../../gcc-4.4.0/libgcc/../include
 ../../../gcc-4.4.0/libgcc/config/libbid
 /localdata/install/gcc/gcc-4.4.0-build/./gcc/include
 /localdata/install/gcc/gcc-4.4.0-build/./gcc/include-fixed
 /usr/local/include
 /localdata/include
 /usr/include
End of search list.

GNU C (GCC) version 4.4.0 (i686-pc-linux-gnu)
        compiled by GNU C version 4.3.3, GMP version 4.3, MPFR version
2.4.1-p5.
warning: GMP header version 4.3 differs from library version 4.3.0.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: ac242e6eff36fdeb132b194aac7540a7

Program received signal SIGSEGV, Segmentation fault.
0x0816a5ba in c_tree_printer (pp=0x9e3d288, text=0xbfd3ca04, spec=0x9e23129
"D", precision=0, wide=0 '\0', set_locus=0 '\0', hash=0 '\0')
    at ../../gcc-4.4.0/gcc/c-objc-common.c:99
99        tree t = va_arg (*text->args_ptr, tree);
(gdb) bt
#0  0x0816a5ba in c_tree_printer (pp=0x9e3d288, text=0xbfd3ca04, spec=0x9e23129
"D", precision=0, wide=0 '\0', set_locus=0 '\0',
    hash=0 '\0') at ../../gcc-4.4.0/gcc/c-objc-common.c:99
#1  0x088568b4 in pp_base_format (pp=0x9e3d288, text=0xbfd3ca04) at
../../gcc-4.4.0/gcc/pretty-print.c:557
#2  0x083cc846 in diagnostic_report_diagnostic (context=0x9dc3aa0,
diagnostic=0xbfd3ca04) at ../../gcc-4.4.0/gcc/diagnostic.c:402
#3  0x083ccbb1 in warning_at (location=682268, opt=208, gmsgid=0x9c21ee8 "%qD
may be used uninitialized in this function")
    at ../../gcc-4.4.0/gcc/diagnostic.c:537
#4  0x091dd663 in warn_uninit (t=0xb75047a8, gmsgid=0x9c21ee8 "%qD may be used
uninitialized in this function", data=0x0)
    at ../../gcc-4.4.0/gcc/tree-ssa.c:1446
#5  0x091dda54 in warn_uninitialized_phi (phi=0xb7518880) at
../../gcc-4.4.0/gcc/tree-ssa.c:1563
#6  0x091ddc48 in execute_late_warn_uninitialized () at
../../gcc-4.4.0/gcc/tree-ssa.c:1626
#7  0x0881c261 in execute_one_pass (pass=0x9db57c0) at
../../gcc-4.4.0/gcc/passes.c:1277
#8  0x0881c401 in execute_pass_list (pass=0x9db57c0) at
../../gcc-4.4.0/gcc/passes.c:1326
#9  0x0881c41d in execute_pass_list (pass=0x9db4820) at
../../gcc-4.4.0/gcc/passes.c:1327
#10 0x08ca2fbe in tree_rest_of_compilation (fndecl=0xb7678800) at
../../gcc-4.4.0/gcc/tree-optimize.c:420
#11 0x0947a994 in cgraph_expand_function (node=0xb7678b80) at
../../gcc-4.4.0/gcc/cgraphunit.c:1047
#12 0x0947ab36 in cgraph_expand_all_functions () at
../../gcc-4.4.0/gcc/cgraphunit.c:1106
#13 0x0947b0b1 in cgraph_optimize () at ../../gcc-4.4.0/gcc/cgraphunit.c:1311
#14 0x0809ceeb in c_write_global_declarations () at
../../gcc-4.4.0/gcc/c-decl.c:8102
#15 0x08a7bc25 in compile_file () at ../../gcc-4.4.0/gcc/toplev.c:981
#16 0x08a7d829 in do_compile () at ../../gcc-4.4.0/gcc/toplev.c:2193
#17 0x08a7d88b in toplev_main (argc=65, argv=0xbfd3ce24) at
../../gcc-4.4.0/gcc/toplev.c:2225
#18 0x081e31a2 in main (argc=Cannot access memory at address 0x0
) at ../../gcc-4.4.0/gcc/main.c:35


I hope this helps!


-- 

dennis dot wassel at googlemail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39849