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value_fetch_lazy, ensure parent is not lazy and check parent for validity.
http://sourceware.org/ml/gdb-patches/2013-07/msg00316.html gdb/ChangeLog * value.c (value_fetch_lazy): Ensure parent value is not lazy before checking which bits of the parent, not the child, value are valid. gdb/testsuite/ChangeLog * gdb.dwarf2/pieces-optimized-out.exp: New file. * gdb.dwarf2/pieces-optimized-out.c: New file. * gdb.dwarf2/pieces-optimized-out.S: New file.
This commit is contained in:
Andrew Burgess
parent
97c85fc673
commit
b0c54aa509
@ -1,3 +1,9 @@
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2013-07-30 Andrew Burgess <aburgess@broadcom.com>
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* value.c (value_fetch_lazy): Ensure parent value is not lazy
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before checking which bits of the parent, not the child, value are
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valid.
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2013-07-30 Muhammad Bilal <mbilal@codesorcery.com>
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PR gdb/15715
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@ -1,3 +1,9 @@
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2013-07-30 Andrew Burgess <aburgess@broadcom.com>
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* gdb.dwarf2/pieces-optimized-out.exp: New file.
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* gdb.dwarf2/pieces-optimized-out.c: New file.
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* gdb.dwarf2/pieces-optimized-out.S: New file.
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2013-07-30 Muhammad Bilal <mbilal@codesourcery.com>
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PR gdb/15715
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548
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.S
Normal file
548
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.S
Normal file
@ -0,0 +1,548 @@
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/*
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Copyright 2010-2013 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This was compiled with gcc version 4.7.2 using:
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gcc -O3 -m32 -g -o pieces-optimized-out.S -S pieces-optimized-out.c
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The contents of this file are otherwise unmodified. */
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.file "pieces-optimized-out.c"
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.text
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.Ltext0:
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.p2align 4,,15
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.globl foo
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.type foo, @function
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foo:
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.LFB0:
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.file 1 "pieces-optimized-out.c"
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.loc 1 33 0
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.LVL0:
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.loc 1 35 0
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movl 4(%esp), %eax
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ret
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.LFE0:
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.size foo, .-foo
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.section .text.startup,"ax",@progbits
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.p2align 4,,15
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.globl main
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.type main, @function
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main:
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.LFB1:
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.loc 1 39 0
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.LVL1:
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subl $4, %esp
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.LCFI0:
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.loc 1 44 0
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movl $10, (%esp)
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call foo
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.LVL2:
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.loc 1 46 0
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addl $4, %esp
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.LCFI1:
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.loc 1 45 0
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addl $20, %eax
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.LVL3:
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.loc 1 46 0
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ret
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.LFE1:
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.size main, .-main
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.section .debug_frame,"",@progbits
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.Lframe0:
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.long .LECIE0-.LSCIE0
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.LSCIE0:
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.long 0xffffffff
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.byte 0x1
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.string ""
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.uleb128 0x1
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.sleb128 -4
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.byte 0x8
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.byte 0xc
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.uleb128 0x4
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.uleb128 0x4
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.byte 0x88
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.uleb128 0x1
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.align 4
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.LECIE0:
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.LSFDE0:
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.long .LEFDE0-.LASFDE0
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.LASFDE0:
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.long .Lframe0
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.long .LFB0
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.long .LFE0-.LFB0
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.align 4
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.LEFDE0:
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.LSFDE2:
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.long .LEFDE2-.LASFDE2
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.LASFDE2:
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.long .Lframe0
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.long .LFB1
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.long .LFE1-.LFB1
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.byte 0x4
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.long .LCFI0-.LFB1
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.byte 0xe
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.uleb128 0x8
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.byte 0x4
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.long .LCFI1-.LCFI0
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.byte 0xe
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.uleb128 0x4
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.align 4
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.LEFDE2:
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.section .eh_frame,"a",@progbits
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.Lframe1:
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.long .LECIE1-.LSCIE1
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.LSCIE1:
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.long 0
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.byte 0x1
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.string ""
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.uleb128 0x1
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.sleb128 -4
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.byte 0x8
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.byte 0xc
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.uleb128 0x4
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.uleb128 0x4
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.byte 0x88
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.uleb128 0x1
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.align 4
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.LECIE1:
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.LSFDE5:
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.long .LEFDE5-.LASFDE5
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.LASFDE5:
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.long .LASFDE5-.Lframe1
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.long .LFB0
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.long .LFE0-.LFB0
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.align 4
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.LEFDE5:
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.LSFDE7:
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.long .LEFDE7-.LASFDE7
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.LASFDE7:
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.long .LASFDE7-.Lframe1
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.long .LFB1
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.long .LFE1-.LFB1
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.byte 0x4
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.long .LCFI0-.LFB1
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.byte 0xe
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.uleb128 0x8
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.byte 0x4
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.long .LCFI1-.LCFI0
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.byte 0xe
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.uleb128 0x4
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.align 4
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.LEFDE7:
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.text
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.Letext0:
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.section .debug_info,"",@progbits
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.Ldebug_info0:
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.long 0xe4
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.value 0x2
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.long .Ldebug_abbrev0
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.byte 0x4
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.uleb128 0x1
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.long .LASF0
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.byte 0x1
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.long .LASF1
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.long .LASF2
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.long .Ldebug_ranges0+0
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.long 0
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.long 0
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.long .Ldebug_line0
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.uleb128 0x2
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.string "str"
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.byte 0xc
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.byte 0x1
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.byte 0x17
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.long 0x6c
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.uleb128 0x3
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.string "a"
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.byte 0x1
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.byte 0x19
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.long 0x6c
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.byte 0x2
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.byte 0x23
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.uleb128 0
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.uleb128 0x3
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.string "b"
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.byte 0x1
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.byte 0x1a
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.long 0x6c
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.byte 0x2
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.byte 0x23
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.uleb128 0x4
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.uleb128 0x4
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.string "c"
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.byte 0x1
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.byte 0x1b
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.long 0x6c
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.byte 0x4
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.byte 0x3
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.byte 0x1d
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.byte 0x2
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.byte 0x23
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.uleb128 0x8
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.uleb128 0x4
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.string "d"
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.byte 0x1
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.byte 0x1c
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.long 0x6c
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.byte 0x4
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.byte 0x3
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.byte 0x1a
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.byte 0x2
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.byte 0x23
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.uleb128 0x8
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.byte 0
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.uleb128 0x5
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.byte 0x4
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.byte 0x5
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.string "int"
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.uleb128 0x6
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.byte 0x1
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.string "foo"
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.byte 0x1
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.byte 0x20
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.byte 0x1
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.long 0x6c
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.long .LFB0
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.long .LFE0
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.byte 0x2
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.byte 0x74
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.sleb128 4
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.byte 0x1
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.long 0x9f
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.uleb128 0x7
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.string "arg"
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.byte 0x1
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.byte 0x20
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.long 0x6c
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.byte 0x2
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.byte 0x91
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.sleb128 0
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.byte 0
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.uleb128 0x8
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.byte 0x1
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.long .LASF3
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.byte 0x1
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.byte 0x26
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.byte 0x1
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.long 0x6c
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.long .LFB1
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.long .LFE1
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.long .LLST0
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.byte 0x1
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.uleb128 0x9
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.string "s"
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.byte 0x1
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.byte 0x28
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.long 0x29
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.byte 0x6
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.byte 0x35
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.byte 0x9f
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.byte 0x93
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.uleb128 0x4
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.byte 0x93
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.uleb128 0x8
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.uleb128 0xa
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.string "v"
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.byte 0x1
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.byte 0x29
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.long 0x6c
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.long .LLST1
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.uleb128 0xb
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.long .LVL2
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.long 0x73
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.uleb128 0xc
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.byte 0x2
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.byte 0x74
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.sleb128 0
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.byte 0x1
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.byte 0x3a
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.byte 0
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.byte 0
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.byte 0
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.section .debug_abbrev,"",@progbits
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.Ldebug_abbrev0:
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.uleb128 0x1
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.uleb128 0x11
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.byte 0x1
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.uleb128 0x25
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.uleb128 0xe
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.uleb128 0x13
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.uleb128 0xb
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.uleb128 0x3
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.uleb128 0xe
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.uleb128 0x1b
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.uleb128 0xe
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.uleb128 0x55
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.uleb128 0x6
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.uleb128 0x11
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.uleb128 0x1
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.uleb128 0x52
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.uleb128 0x1
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.uleb128 0x10
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.uleb128 0x6
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.byte 0
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.byte 0
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.uleb128 0x2
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.uleb128 0x13
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.byte 0x1
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.uleb128 0x3
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.uleb128 0x8
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.uleb128 0xb
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.uleb128 0xb
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.uleb128 0x3a
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.uleb128 0xb
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.uleb128 0x3b
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.uleb128 0xb
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.uleb128 0x1
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.uleb128 0x13
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.byte 0
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.byte 0
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.uleb128 0x3
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.uleb128 0xd
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.byte 0
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||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
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||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x38
|
||||
.uleb128 0xa
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x4
|
||||
.uleb128 0xd
|
||||
.byte 0
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0xb
|
||||
.uleb128 0xb
|
||||
.uleb128 0xd
|
||||
.uleb128 0xb
|
||||
.uleb128 0xc
|
||||
.uleb128 0xb
|
||||
.uleb128 0x38
|
||||
.uleb128 0xa
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x5
|
||||
.uleb128 0x24
|
||||
.byte 0
|
||||
.uleb128 0xb
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3e
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x6
|
||||
.uleb128 0x2e
|
||||
.byte 0x1
|
||||
.uleb128 0x3f
|
||||
.uleb128 0xc
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x27
|
||||
.uleb128 0xc
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x11
|
||||
.uleb128 0x1
|
||||
.uleb128 0x12
|
||||
.uleb128 0x1
|
||||
.uleb128 0x40
|
||||
.uleb128 0xa
|
||||
.uleb128 0x2117
|
||||
.uleb128 0xc
|
||||
.uleb128 0x1
|
||||
.uleb128 0x13
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x7
|
||||
.uleb128 0x5
|
||||
.byte 0
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x2
|
||||
.uleb128 0xa
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x8
|
||||
.uleb128 0x2e
|
||||
.byte 0x1
|
||||
.uleb128 0x3f
|
||||
.uleb128 0xc
|
||||
.uleb128 0x3
|
||||
.uleb128 0xe
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x27
|
||||
.uleb128 0xc
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x11
|
||||
.uleb128 0x1
|
||||
.uleb128 0x12
|
||||
.uleb128 0x1
|
||||
.uleb128 0x40
|
||||
.uleb128 0x6
|
||||
.uleb128 0x2117
|
||||
.uleb128 0xc
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0x9
|
||||
.uleb128 0x34
|
||||
.byte 0
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x2
|
||||
.uleb128 0xa
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0xa
|
||||
.uleb128 0x34
|
||||
.byte 0
|
||||
.uleb128 0x3
|
||||
.uleb128 0x8
|
||||
.uleb128 0x3a
|
||||
.uleb128 0xb
|
||||
.uleb128 0x3b
|
||||
.uleb128 0xb
|
||||
.uleb128 0x49
|
||||
.uleb128 0x13
|
||||
.uleb128 0x2
|
||||
.uleb128 0x6
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0xb
|
||||
.uleb128 0x4109
|
||||
.byte 0x1
|
||||
.uleb128 0x11
|
||||
.uleb128 0x1
|
||||
.uleb128 0x31
|
||||
.uleb128 0x13
|
||||
.byte 0
|
||||
.byte 0
|
||||
.uleb128 0xc
|
||||
.uleb128 0x410a
|
||||
.byte 0
|
||||
.uleb128 0x2
|
||||
.uleb128 0xa
|
||||
.uleb128 0x2111
|
||||
.uleb128 0xa
|
||||
.byte 0
|
||||
.byte 0
|
||||
.byte 0
|
||||
.section .debug_loc,"",@progbits
|
||||
.Ldebug_loc0:
|
||||
.LLST0:
|
||||
.long .LFB1
|
||||
.long .LCFI0
|
||||
.value 0x2
|
||||
.byte 0x74
|
||||
.sleb128 4
|
||||
.long .LCFI0
|
||||
.long .LCFI1
|
||||
.value 0x2
|
||||
.byte 0x74
|
||||
.sleb128 8
|
||||
.long .LCFI1
|
||||
.long .LFE1
|
||||
.value 0x2
|
||||
.byte 0x74
|
||||
.sleb128 4
|
||||
.long 0
|
||||
.long 0
|
||||
.LLST1:
|
||||
.long .LVL1
|
||||
.long .LVL2
|
||||
.value 0x2
|
||||
.byte 0x3a
|
||||
.byte 0x9f
|
||||
.long .LVL2
|
||||
.long .LVL3
|
||||
.value 0x3
|
||||
.byte 0x70
|
||||
.sleb128 10
|
||||
.byte 0x9f
|
||||
.long .LVL3
|
||||
.long .LFE1
|
||||
.value 0x3
|
||||
.byte 0x70
|
||||
.sleb128 -10
|
||||
.byte 0x9f
|
||||
.long 0
|
||||
.long 0
|
||||
.section .debug_aranges,"",@progbits
|
||||
.long 0x24
|
||||
.value 0x2
|
||||
.long .Ldebug_info0
|
||||
.byte 0x4
|
||||
.byte 0
|
||||
.value 0
|
||||
.value 0
|
||||
.long .Ltext0
|
||||
.long .Letext0-.Ltext0
|
||||
.long .LFB1
|
||||
.long .LFE1-.LFB1
|
||||
.long 0
|
||||
.long 0
|
||||
.section .debug_ranges,"",@progbits
|
||||
.Ldebug_ranges0:
|
||||
.long .Ltext0
|
||||
.long .Letext0
|
||||
.long .LFB1
|
||||
.long .LFE1
|
||||
.long 0
|
||||
.long 0
|
||||
.section .debug_line,"",@progbits
|
||||
.Ldebug_line0:
|
||||
.section .debug_str,"MS",@progbits,1
|
||||
.LASF2:
|
||||
.string "/home/username/"
|
||||
.LASF1:
|
||||
.string "pieces-optimized-out.c"
|
||||
.LASF0:
|
||||
.string "GNU C 4.7.2"
|
||||
.LASF3:
|
||||
.string "main"
|
||||
.ident "GCC: (GNU) 4.7.2"
|
||||
.section .note.GNU-stack,"",@progbits
|
||||
47
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.c
Normal file
47
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.c
Normal file
@ -0,0 +1,47 @@
|
||||
/* Copyright (C) 2013 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GDB.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||||
|
||||
/* This file is not actually compiled, the .S file is committed alongside
|
||||
this file. The reason is that changes to the compiler might result
|
||||
in different debug information being created, this could break the
|
||||
test. */
|
||||
|
||||
struct str
|
||||
{
|
||||
int a;
|
||||
int b;
|
||||
int c : 3;
|
||||
int d : 3;
|
||||
};
|
||||
|
||||
int __attribute__ ((noinline))
|
||||
foo (int arg)
|
||||
{
|
||||
return arg;
|
||||
}
|
||||
|
||||
int
|
||||
main ( void )
|
||||
{
|
||||
struct str s = {5, 7, 1, 2};
|
||||
int v;
|
||||
|
||||
v = (s.a << 1);
|
||||
v += foo (v);
|
||||
return v + 5 + s.a;
|
||||
}
|
||||
|
||||
49
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.exp
Normal file
49
gdb/testsuite/gdb.dwarf2/pieces-optimized-out.exp
Normal file
@ -0,0 +1,49 @@
|
||||
# Copyright 2013 Free Software Foundation, Inc.
|
||||
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
load_lib dwarf.exp
|
||||
# Test some DWARF piece operators.
|
||||
|
||||
# This test can only be run on targets which support DWARF-2 and use gas.
|
||||
if {![dwarf2_support]} {
|
||||
return 0
|
||||
}
|
||||
# This test can only be run on x86 targets.
|
||||
if {![is_x86_like_target]} {
|
||||
return 0
|
||||
}
|
||||
|
||||
standard_testfile .S
|
||||
set csrcfile ${testfile}.c
|
||||
|
||||
if {[prepare_for_testing ${testfile}.exp ${testfile} $srcfile]} {
|
||||
return -1
|
||||
}
|
||||
|
||||
if ![runto foo] {
|
||||
return -1
|
||||
}
|
||||
|
||||
# Move back up to main.
|
||||
gdb_test "up" "#1 $hex in main.*" "move up a frame"
|
||||
|
||||
# Now take a look at the 's' structure.
|
||||
gdb_test "p s" \
|
||||
" = {a = 5, b = <optimized out>, c = <optimized out>, d = <optimized out>}" \
|
||||
"print s"
|
||||
gdb_test "p s.a" " = 5" "print s.a"
|
||||
gdb_test "p s.b" " = <optimized out>" "print s.b"
|
||||
gdb_test "p s.c" "value has been optimized out" "print s.c"
|
||||
gdb_test "p s.d" "value has been optimized out" "print s.d"
|
||||
|
||||
@ -3433,7 +3433,10 @@ value_fetch_lazy (struct value *val)
|
||||
LONGEST offset = value_offset (val);
|
||||
LONGEST num;
|
||||
|
||||
if (!value_bits_valid (val,
|
||||
if (value_lazy (parent))
|
||||
value_fetch_lazy (parent);
|
||||
|
||||
if (!value_bits_valid (parent,
|
||||
TARGET_CHAR_BIT * offset + value_bitpos (val),
|
||||
value_bitsize (val)))
|
||||
error (_("value has been optimized out"));
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user