[Bug c++/17656] New: segmentation fault while loading symbols

tnozicka at gmail dot com sourceware-bugzilla@sourceware.org
Thu Nov 27 15:56:00 GMT 2014 

https://sourceware.org/bugzilla/show_bug.cgi?id=17656

            Bug ID: 17656
           Summary: segmentation fault while loading symbols
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: critical
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: tnozicka at gmail dot com

Hi, symbol
_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE
will cause gdb(demangler) to crash with segmentation fault.
The symbol has been generated by custom build g++-4.9.



Backtrace:
#0  0x000000000083b91a in d_print_comp_inner (dpi=<error reading variable:
Cannot access memory at address 0x7fffff3feec8>, options=<error reading
variable: Cannot access memory at address 0x7fffff3feec4>, 
    dc=<error reading variable: Cannot access memory at address
0x7fffff3feeb8>) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4294
#1  0x000000000083e221 in d_print_comp (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf08) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5368
#2  0x000000000083ba8b in d_print_comp_inner (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf80) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4332
#3  0x000000000083e221 in d_print_comp (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf80) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5368
#4  0x000000000083c9db in d_print_comp_inner (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf98) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4769
#5  0x000000000083e221 in d_print_comp (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf38) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5368
#6  0x000000000083d048 in d_print_comp_inner (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffcf50) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4950
...
#43656 0x000000000083beac in d_print_comp_inner (dpi=0x7fffffffcaa0,
options=259, dc=0x7fffffffd0d0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4442
#43657 0x000000000083e221 in d_print_comp (dpi=0x7fffffffcaa0, options=259,
dc=0x7fffffffd0d0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5368
#43658 0x000000000083b3ff in cplus_demangle_print_callback (options=259,
dc=0x7fffffffd0d0, callback=0x83ae2c <d_growable_string_callback_adapter>,
opaque=0x7fffffffde50)
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:4071
#43659 0x000000000083f1db in d_demangle_callback (mangled=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=259, 
    callback=0x83ae2c <d_growable_string_callback_adapter>,
opaque=0x7fffffffde50) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5898
#43660 0x000000000083f233 in d_demangle (mangled=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=259, palc=0x7fffffffdea8)
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:5919
#43661 0x000000000083f29d in cplus_demangle_v3 (mangled=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=259)
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cp-demangle.c:6076

#43662 0x000000000082dcf8 in cplus_demangle (mangled=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=3)
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/libiberty/cplus-dem.c:858
#43663 0x000000000077205f in bfd_demangle (abfd=0x0, name=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=3)
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/bfd/bfd.c:1885

#43664 0x0000000000730014 in gdb_demangle (name=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
options=3) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/cp-support.c:1490
---Type <return> to continue, or q <return> to quit---
#43665 0x00000000005c65b2 in symbol_find_demangled_name (gsymbol=0xf1ae58,
mangled=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE")
    at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symtab.c:661

#43666 0x00000000005c6afa in symbol_set_names (gsymbol=0xf1ae58,
linkage_name=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
len=77, copy_name=0, 
    objfile=0xe938a0) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symtab.c:871
#43667 0x000000000065674e in prim_record_minimal_symbol_full
(name=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
name_len=77, copy_name=0, address=4218913, 
    ms_type=mst_file_text, section=12, objfile=0xe938a0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/minsyms.c:960
#43668 0x000000000053ce9c in record_minimal_symbol (name=0x7ffff5aacc85
"_ZSt7forwardIRN15SuperiorMySqlppUlOT_E_EES2_RNSt16remove_referenceIS1_E4typeE",
name_len=77, copy_name=0, address=4218913, 
    ms_type=mst_file_text, bfd_section=0xea7f38, objfile=0xe938a0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/elfread.c:206
#43669 0x000000000053d734 in elf_symtab_read (objfile=0xe938a0, type=0,
number_of_symbols=5945, symbol_table=0xf0e540, copy_names=0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/elfread.c:543
#43670 0x000000000053f19f in elf_read_minimal_symbols (objfile=0xe938a0,
symfile_flags=6, ei=0x7fffffffe3d0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/elfread.c:1148

#43671 0x000000000053f446 in elf_symfile_read (objfile=0xe938a0,
symfile_flags=6) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/elfread.c:1264
#43672 0x00000000005d52f8 in read_symbols (objfile=0xe938a0, add_flags=6) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:877
#43673 0x00000000005d58ec in syms_from_objfile_1 (objfile=0xe938a0,
addrs=0xe7e240, add_flags=6) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1080
#43674 0x00000000005d5934 in syms_from_objfile (objfile=0xe938a0, addrs=0x0,
add_flags=6) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1096
#43675 0x00000000005d5b2c in symbol_file_add_with_addrs (abfd=0xe99b80,
name=0x7fffffffec21 "tester", add_flags=6, addrs=0x0, flags=0, parent=0x0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1193
#43676 0x00000000005d5d22 in symbol_file_add_from_bfd (abfd=0xe99b80,
name=0x7fffffffec21 "tester", add_flags=6, addrs=0x0, flags=0, parent=0x0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1282
#43677 0x00000000005d5d7d in symbol_file_add (name=0x7fffffffec21 "tester",
add_flags=6, addrs=0x0, flags=0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1297
#43678 0x00000000005d5e0c in symbol_file_add_main_1 (args=0x7fffffffec21
"tester", from_tty=1, flags=0) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1322
#43679 0x00000000005d5db8 in symbol_file_add_main (args=0x7fffffffec21
"tester", from_tty=1) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/symfile.c:1313
#43680 0x000000000060d13c in catch_command_errors_const (command=0x5d5d93
<symbol_file_add_main>, arg=0x7fffffffec21 "tester", from_tty=1,
mask=RETURN_MASK_ALL) at /tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/main.c:378
#43681 0x000000000060e1e8 in captured_main (data=0x7fffffffe890) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/main.c:1057
#43682 0x0000000000608c2d in catch_errors (func=0x60d3d2 <captured_main>,
func_args=0x7fffffffe890, errstring=0x8ccd93 "", mask=RETURN_MASK_ALL) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/exceptions.c:506
#43683 0x000000000060e569 in gdb_main (args=0x7fffffffe890) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/main.c:1172
#43684 0x000000000045d3c3 in main (argc=2, argv=0x7fffffffe998) at
/tmp/tmp.rz3lynF6C7/gdb-7.8.1/gdb/gdb.c:33

-- 
You are receiving this mail because:
You are on the CC list for the bug.

More information about the Gdb-prs mailing list