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Crash regression for gdb.dwarf2/dw2-inheritance.exp [Re: [RFA 3/3] Initial Fission support, the actual Fission stuff]


On Wed, 18 Apr 2012 20:57:38 +0200, Doug Evans wrote:
> 2012-04-18  Doug Evans  <dje@google.com>
> 
> 	Initial support for Fission.  http://gcc.gnu.org/wiki/DebugFission

 Running gdb/testsuite/gdb.dwarf2/dw2-inheritance.exp ...
-PASS: gdb.dwarf2/dw2-inheritance.exp: ptype inherited
+ERROR: couldn't load /unsafegdb/testsuite.unix.-m32/gdb.dwarf2/dw2-inheritance.x into /unsafegdb/testsuite.unix.-m32/../../gdb/gdb (end of file).
+ERROR: Couldn't send ptype inherited to GDB.
+UNRESOLVED: gdb.dwarf2/dw2-inheritance.exp: ptype inherited

Program terminated with signal 11, Segmentation fault.
#0  0x000000000063037c in dwarf_decode_line_header (offset=0, cu=0x2c4b410) at dwarf2read.c:12320
12320	  abfd = section->asection->owner;
(gdb) p section->asection
$2 = (asection *) 0x0
(gdb) bt
#0  0x000000000063037c in dwarf_decode_line_header (offset=0, cu=0x2c4b410) at dwarf2read.c:12320
#1  0x000000000061c354 in dwarf2_build_include_psymtabs (cu=0x2c4b410, die=0x2c4b5d0, pst=0x2c2d810) at dwarf2read.c:3324
#2  0x000000000061e46b in process_psymtab_comp_unit_reader (reader=0x7fff3fa1ac90, info_ptr=0x2c2d777 "\003base", comp_unit_die=0x2c4b5d0, has_children=1, 
    data=0x0) at dwarf2read.c:4159
#3  0x000000000061dc53 in init_and_read_dies_worker (this_cu=0x2c2d7a0, use_existing_cu=0, keep=0, die_reader_func=
    0x61e036 <process_psymtab_comp_unit_reader>, data=0x0) at dwarf2read.c:3895
#4  0x000000000061dd12 in init_cu_and_read_dies (this_cu=0x2c2d7a0, use_existing_cu=0, keep=0, die_reader_func=0x61e036 <process_psymtab_comp_unit_reader>, 
    data=0x0) at dwarf2read.c:3936
#5  0x000000000061e4f9 in process_psymtab_comp_unit (this_cu=0x2c2d7a0) at dwarf2read.c:4178
#6  0x000000000061e726 in dwarf2_build_psymtabs_hard (objfile=0x2c386d0) at dwarf2read.c:4269
#7  0x000000000061bca2 in dwarf2_build_psymtabs (objfile=0x2c386d0) at dwarf2read.c:3133
#8  0x0000000000508db2 in read_psyms (objfile=0x2c386d0) at elfread.c:1449
#9  0x000000000058f9be in require_partial_symbols (objfile=0x2c386d0, verbose=0) at psymtab.c:92

It happens on RHEL-6 i386/x86_68/x86_64-m32.  Feel free to request more info.


Regards,
Jan


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