This is the mail archive of the
gdb-prs@sourceware.org
mailing list for the GDB project.
[Bug symtab/11409] New: syms_from_objfile mishandles duplicate section names
- From: "schwab at linux-m68k dot org" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: 20 Mar 2010 19:54:46 -0000
- Subject: [Bug symtab/11409] New: syms_from_objfile mishandles duplicate section names
- Reply-to: sourceware-bugzilla at sourceware dot org
When gdb reads a separate debug info that contains two sections with the same
name it miscalculates the section offset of the duplicate section. Any symbols
defined in such a section are get the wrong address.
There are 41 section headers, starting at offset 0x10e1ce8:
Section Headers:
[Nr] Name Type Address Off Size ES Flg
Lk Inf Al
[ 0] NULL 0000000000000000 000000 000000 00
0 0 0
[ 1] .interp PROGBITS 0000000010000200 000200 000011 00 A
0 0 1
[ 2] .note.ABI-tag NOTE 0000000010000214 000214 000020 00 A
0 0 4
[ 3] .note.SuSE NOTE 0000000010000234 000234 000018 00 A
0 0 4
[ 4] .note.gnu.build-id NOTE 000000001000024c 00024c 000024 00 A
0 0 4
[ 5] .hash HASH 0000000010000270 000270 001634 04 A
7 0 8
[ 6] .gnu.hash GNU_HASH 00000000100018a8 0018a8 0000b4 00 A
7 0 8
[ 7] .dynsym DYNSYM 0000000010001960 001960 005430 18 A
8 1 8
[ 8] .dynstr STRTAB 0000000010006d90 006d90 003bbc 00 A
0 0 1
[ 9] .gnu.version VERSYM 000000001000a94c 00a94c 000704 02 A
7 0 2
[10] .gnu.version_r VERNEED 000000001000b050 00b050 0000e0 00 A
8 5 8
[11] .rela.toc RELA 000000001000b130 00b130 0003f0 18 A
7 0 8
[12] .rela.plt RELA 000000001000b520 00b520 0050b8 18 A
7 25 8
[13] .init PROGBITS 00000000100105d8 0105d8 000050 00 AX
0 0 8
[14] .text PROGBITS 0000000010010630 010630 2014f8 00 AX
0 0 16
[15] .fini PROGBITS 0000000010211b28 211b28 000020 00 AX
0 0 8
[16] .rodata PROGBITS 0000000010211b48 211b48 01d158 00 A
0 0 8
[17] .eh_frame_hdr PROGBITS 000000001022eca0 22eca0 006a04 00 A
0 0 4
[18] .eh_frame PROGBITS 00000000102356a8 2356a8 01fe98 00 A
0 0 8
[19] .data.rel.ro PROGBITS 0000000010265a00 255a00 000200 00 WA
0 0 8
[20] .dynamic DYNAMIC 0000000010265c00 255c00 000400 10 WA
8 0 8
[21] .data PROGBITS 0000000010266000 256000 2a5bd8 00 WA
0 0 8
[22] .opd PROGBITS 000000001050bbd8 4fbbd8 013e18 00 WA
0 0 8
[23] .branch_lt PROGBITS 000000001051f9f0 50f9f0 000000 00 WA
0 0 8
[24] .got PROGBITS 000000001051f9f0 50f9f0 010068 08 WA
0 0 8
[25] .data PROGBITS 000000001052fa58 51fa58 6765a8 00 WA
0 0 8
[26] .plt NOBITS 0000000010ba6000 b96000 000000 18 WA
0 0 16
[27] .bss NOBITS 0000000010ba6000 b96000 000000 00 WA
0 0 1
[28] .comment.SUSE.OPTs PROGBITS 0000000000000000 b96000 000006 01 MS
0 0 1
[29] .comment PROGBITS 0000000000000000 b96006 000120 00
0 0 1
[30] .debug_aranges PROGBITS 0000000000000000 b96126 000f30 00
0 0 1
[31] .debug_pubnames PROGBITS 0000000000000000 b97056 01b0dc 00
0 0 1
[32] .debug_info PROGBITS 0000000000000000 bb2132 1e3976 00
0 0 1
[33] .debug_abbrev PROGBITS 0000000000000000 d95aa8 015847 00
0 0 1
[34] .debug_line PROGBITS 0000000000000000 dab2ef 041121 00
0 0 1
[35] .debug_str PROGBITS 0000000000000000 dec410 03c4fb 01 MS
0 0 1
[36] .debug_loc PROGBITS 0000000000000000 e2890b 270020 00
0 0 1
[37] .debug_ranges PROGBITS 0000000000000000 109892b 049230 00
0 0 1
[38] .shstrtab STRTAB 0000000000000000 10e1b5b 000186 00
0 0 1
[39] .symtab SYMTAB 0000000000000000 10e2728 032a48 18
40 2633 8
[40] .strtab STRTAB 0000000000000000 1115170 02a295 00
0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)
(top-gdb) p addrs.other [0]@addrs .num_sections
$48 = {{addr = 0x0, name = 0x107e0b20 ".interp", sectindex = 0x0}, {
addr = 0x0, name = 0x108171c0 ".note.ABI-tag", sectindex = 0x1}, {
addr = 0x0, name = 0x108171e0 ".note.SuSE", sectindex = 0x2}, {
addr = 0x0, name = 0x10817200 ".note.gnu.build-id", sectindex = 0x3}, {
addr = 0x0, name = 0x10817220 ".hash", sectindex = 0x4}, {addr = 0x0,
name = 0x10817240 ".gnu.hash", sectindex = 0x5}, {addr = 0x0,
name = 0x10817260 ".dynsym", sectindex = 0x6}, {addr = 0x0,
name = 0x10817280 ".dynstr", sectindex = 0x7}, {addr = 0x0,
name = 0x108172a0 ".gnu.version", sectindex = 0x8}, {addr = 0x0,
name = 0x108172c0 ".gnu.version_r", sectindex = 0x9}, {addr = 0x0,
name = 0x108172e0 ".rela.toc", sectindex = 0xa}, {addr = 0x0,
name = 0x10817300 ".rela.plt", sectindex = 0xb}, {addr = 0x0,
name = 0x10817320 ".init", sectindex = 0xc}, {addr = 0x0,
name = 0x10817340 ".text", sectindex = 0xd}, {addr = 0x0,
name = 0x10817360 ".fini", sectindex = 0xe}, {addr = 0x0,
name = 0x10817380 ".rodata", sectindex = 0xf}, {addr = 0x0,
name = 0x108173a0 ".eh_frame_hdr", sectindex = 0x10}, {addr = 0x0,
name = 0x108173c0 ".eh_frame", sectindex = 0x11}, {addr = 0x0,
name = 0x108173e0 ".data.rel.ro", sectindex = 0x12}, {addr = 0x0,
name = 0x10817400 ".dynamic", sectindex = 0x13}, {addr = 0x0,
name = 0x10817420 ".data", sectindex = 0x14}, {addr = 0x0,
name = 0x10817440 ".opd", sectindex = 0x15}, {addr = 0x0,
name = 0x10817460 ".branch_lt", sectindex = 0x16}, {addr = 0x0,
name = 0x107f3680 ".got", sectindex = 0x17}, {addr = 0x2e41b0,
name = 0x10817480 ".data", sectindex = 0x14}, {addr = 0x0,
name = 0x107b55b0 ".plt", sectindex = 0x19}, {addr = 0x0,
name = 0x107b55d0 ".bss", sectindex = 0x1a}, {addr = 0x0, name = 0x0,
sectindex = 0x0}, {addr = 0x0, name = 0x0, sectindex = 0x0}}
--
Summary: syms_from_objfile mishandles duplicate section names
Product: gdb
Version: 7.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: symtab
AssignedTo: unassigned at sourceware dot org
ReportedBy: schwab at linux-m68k dot org
CC: gdb-prs at sourceware dot org
http://sourceware.org/bugzilla/show_bug.cgi?id=11409
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.