Revert "Don't let two frames with the same id end up in the frame chain."

This reverts commit be2c48b4d50b992ba83bc51f086e316621a03a14.

3 files changed, 0 insertions, 620 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.S b/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.S
deleted file mode 100644
index 4c3bd76..0000000
--- a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.S
+++ /dev/null
@@ -1,540 +0,0 @@
-/*
-   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/>.  */
-
-	/* The FDE entry for "stop_frame" in the .debug_frame section has
-	been hand modified to mark a set of registers as DW_CFA_same_value.
-	Otherwise this file is as generated by gcc 4.7.2 for x86_64.  */
-	.file	"dw2-dup-frame.c"
-	.text
-.Ltext0:
-	.globl	stop_frame
-	.type	stop_frame, @function
-stop_frame:
-.LFB0:
-	.file 1 "dw2-dup-frame.c"
-	.loc 1 19 0
-	pushq	%rbp
-.LCFI0:
-	movq	%rsp, %rbp
-.LCFI1:
-	.loc 1 22 0
-	popq	%rbp
-.LCFI2:
-	ret
-.LFE0:
-	.size	stop_frame, .-stop_frame
-	.globl	first_frame
-	.type	first_frame, @function
-first_frame:
-.LFB1:
-	.loc 1 26 0
-	pushq	%rbp
-.LCFI3:
-	movq	%rsp, %rbp
-.LCFI4:
-	.loc 1 27 0
-	movl	$0, %eax
-	call	stop_frame
-	.loc 1 28 0
-	popq	%rbp
-.LCFI5:
-	ret
-.LFE1:
-	.size	first_frame, .-first_frame
-	.globl	main
-	.type	main, @function
-main:
-.LFB2:
-	.loc 1 32 0
-	pushq	%rbp
-.LCFI6:
-	movq	%rsp, %rbp
-.LCFI7:
-	.loc 1 33 0
-	movl	$0, %eax
-	call	first_frame
-	.loc 1 35 0
-	movl	$0, %eax
-	.loc 1 36 0
-	popq	%rbp
-.LCFI8:
-	ret
-.LFE2:
-	.size	main, .-main
-	.section	.debug_frame,"",@progbits
-.Lframe0:
-	.long	.LECIE0-.LSCIE0
-.LSCIE0:
-	.long	0xffffffff
-	.byte	0x1
-	.string	""
-	.uleb128 0x1
-	.sleb128 -8
-	.byte	0x10
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.byte	0x90
-	.uleb128 0x1
-	.align 8
-.LECIE0:
-	/* This FDE entry, for stop_frame was modified to mark
-	   registers 0 -> 16 (rax..ra/rip) as being DW_CFA_same_value.  */
-.LSFDE0:
-	.long	.LEFDE0-.LASFDE0
-.LASFDE0:
-	.long	.Lframe0
-	.quad	.LFB0
-	.quad	.LFE0-.LFB0
-
-		/* START OF NEW CONTENT.  */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x0			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x1			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x2			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x3			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x4			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x5			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x6			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x7			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x8			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x9			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xa			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xb			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xc			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xd			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xe			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0xf			/*   ULEB128 register */
-	.byte	0x8			/* DW_CFA_same_value */
-	.uleb128 0x10			 /*   ULEB128 register */
-		/* END OF NEW CONTENT.  */
-
-	.byte	0x4
-	.long	.LCFI0-.LFB0
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI1-.LCFI0
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI2-.LCFI1
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE0:
-.LSFDE2:
-	.long	.LEFDE2-.LASFDE2
-.LASFDE2:
-	.long	.Lframe0
-	.quad	.LFB1
-	.quad	.LFE1-.LFB1
-	.byte	0x4
-	.long	.LCFI3-.LFB1
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI4-.LCFI3
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI5-.LCFI4
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE2:
-.LSFDE4:
-	.long	.LEFDE4-.LASFDE4
-.LASFDE4:
-	.long	.Lframe0
-	.quad	.LFB2
-	.quad	.LFE2-.LFB2
-	.byte	0x4
-	.long	.LCFI6-.LFB2
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI7-.LCFI6
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI8-.LCFI7
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE4:
-	.section	.eh_frame,"a",@progbits
-.Lframe1:
-	.long	.LECIE1-.LSCIE1
-.LSCIE1:
-	.long	0
-	.byte	0x1
-	.string	"zR"
-	.uleb128 0x1
-	.sleb128 -8
-	.byte	0x10
-	.uleb128 0x1
-	.byte	0x3
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.byte	0x90
-	.uleb128 0x1
-	.align 8
-.LECIE1:
-.LSFDE7:
-	.long	.LEFDE7-.LASFDE7
-.LASFDE7:
-	.long	.LASFDE7-.Lframe1
-	.long	.LFB0
-	.long	.LFE0-.LFB0
-	.uleb128 0
-	.byte	0x4
-	.long	.LCFI0-.LFB0
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI1-.LCFI0
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI2-.LCFI1
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE7:
-.LSFDE9:
-	.long	.LEFDE9-.LASFDE9
-.LASFDE9:
-	.long	.LASFDE9-.Lframe1
-	.long	.LFB1
-	.long	.LFE1-.LFB1
-	.uleb128 0
-	.byte	0x4
-	.long	.LCFI3-.LFB1
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI4-.LCFI3
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI5-.LCFI4
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE9:
-.LSFDE11:
-	.long	.LEFDE11-.LASFDE11
-.LASFDE11:
-	.long	.LASFDE11-.Lframe1
-	.long	.LFB2
-	.long	.LFE2-.LFB2
-	.uleb128 0
-	.byte	0x4
-	.long	.LCFI6-.LFB2
-	.byte	0xe
-	.uleb128 0x10
-	.byte	0x86
-	.uleb128 0x2
-	.byte	0x4
-	.long	.LCFI7-.LCFI6
-	.byte	0xd
-	.uleb128 0x6
-	.byte	0x4
-	.long	.LCFI8-.LCFI7
-	.byte	0xc
-	.uleb128 0x7
-	.uleb128 0x8
-	.align 8
-.LEFDE11:
-	.text
-.Letext0:
-	.section	.debug_info,"",@progbits
-.Ldebug_info0:
-	.long	0x8c
-	.value	0x2
-	.long	.Ldebug_abbrev0
-	.byte	0x8
-	.uleb128 0x1
-	.long	.LASF2
-	.byte	0x1
-	.long	.LASF3
-	.long	.LASF4
-	.quad	.Ltext0
-	.quad	.Letext0
-	.long	.Ldebug_line0
-	.uleb128 0x2
-	.byte	0x1
-	.long	.LASF0
-	.byte	0x1
-	.byte	0x12
-	.quad	.LFB0
-	.quad	.LFE0
-	.long	.LLST0
-	.byte	0x1
-	.uleb128 0x3
-	.byte	0x1
-	.long	.LASF1
-	.byte	0x1
-	.byte	0x19
-	.quad	.LFB1
-	.quad	.LFE1
-	.long	.LLST1
-	.byte	0x1
-	.uleb128 0x4
-	.byte	0x1
-	.long	.LASF5
-	.byte	0x1
-	.byte	0x1f
-	.long	0x88
-	.quad	.LFB2
-	.quad	.LFE2
-	.long	.LLST2
-	.byte	0x1
-	.uleb128 0x5
-	.byte	0x4
-	.byte	0x5
-	.string	"int"
-	.byte	0
-	.section	.debug_abbrev,"",@progbits
-.Ldebug_abbrev0:
-	.uleb128 0x1
-	.uleb128 0x11
-	.byte	0x1
-	.uleb128 0x25
-	.uleb128 0xe
-	.uleb128 0x13
-	.uleb128 0xb
-	.uleb128 0x3
-	.uleb128 0xe
-	.uleb128 0x1b
-	.uleb128 0xe
-	.uleb128 0x11
-	.uleb128 0x1
-	.uleb128 0x12
-	.uleb128 0x1
-	.uleb128 0x10
-	.uleb128 0x6
-	.byte	0
-	.byte	0
-	.uleb128 0x2
-	.uleb128 0x2e
-	.byte	0
-	.uleb128 0x3f
-	.uleb128 0xc
-	.uleb128 0x3
-	.uleb128 0xe
-	.uleb128 0x3a
-	.uleb128 0xb
-	.uleb128 0x3b
-	.uleb128 0xb
-	.uleb128 0x11
-	.uleb128 0x1
-	.uleb128 0x12
-	.uleb128 0x1
-	.uleb128 0x40
-	.uleb128 0x6
-	.uleb128 0x2117
-	.uleb128 0xc
-	.byte	0
-	.byte	0
-	.uleb128 0x3
-	.uleb128 0x2e
-	.byte	0
-	.uleb128 0x3f
-	.uleb128 0xc
-	.uleb128 0x3
-	.uleb128 0xe
-	.uleb128 0x3a
-	.uleb128 0xb
-	.uleb128 0x3b
-	.uleb128 0xb
-	.uleb128 0x11
-	.uleb128 0x1
-	.uleb128 0x12
-	.uleb128 0x1
-	.uleb128 0x40
-	.uleb128 0x6
-	.uleb128 0x2116
-	.uleb128 0xc
-	.byte	0
-	.byte	0
-	.uleb128 0x4
-	.uleb128 0x2e
-	.byte	0
-	.uleb128 0x3f
-	.uleb128 0xc
-	.uleb128 0x3
-	.uleb128 0xe
-	.uleb128 0x3a
-	.uleb128 0xb
-	.uleb128 0x3b
-	.uleb128 0xb
-	.uleb128 0x49
-	.uleb128 0x13
-	.uleb128 0x11
-	.uleb128 0x1
-	.uleb128 0x12
-	.uleb128 0x1
-	.uleb128 0x40
-	.uleb128 0x6
-	.uleb128 0x2116
-	.uleb128 0xc
-	.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
-	.byte	0
-	.section	.debug_loc,"",@progbits
-.Ldebug_loc0:
-.LLST0:
-	.quad	.LFB0-.Ltext0
-	.quad	.LCFI0-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	.LCFI0-.Ltext0
-	.quad	.LCFI1-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 16
-	.quad	.LCFI1-.Ltext0
-	.quad	.LCFI2-.Ltext0
-	.value	0x2
-	.byte	0x76
-	.sleb128 16
-	.quad	.LCFI2-.Ltext0
-	.quad	.LFE0-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	0
-	.quad	0
-.LLST1:
-	.quad	.LFB1-.Ltext0
-	.quad	.LCFI3-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	.LCFI3-.Ltext0
-	.quad	.LCFI4-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 16
-	.quad	.LCFI4-.Ltext0
-	.quad	.LCFI5-.Ltext0
-	.value	0x2
-	.byte	0x76
-	.sleb128 16
-	.quad	.LCFI5-.Ltext0
-	.quad	.LFE1-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	0
-	.quad	0
-.LLST2:
-	.quad	.LFB2-.Ltext0
-	.quad	.LCFI6-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	.LCFI6-.Ltext0
-	.quad	.LCFI7-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 16
-	.quad	.LCFI7-.Ltext0
-	.quad	.LCFI8-.Ltext0
-	.value	0x2
-	.byte	0x76
-	.sleb128 16
-	.quad	.LCFI8-.Ltext0
-	.quad	.LFE2-.Ltext0
-	.value	0x2
-	.byte	0x77
-	.sleb128 8
-	.quad	0
-	.quad	0
-	.section	.debug_aranges,"",@progbits
-	.long	0x2c
-	.value	0x2
-	.long	.Ldebug_info0
-	.byte	0x8
-	.byte	0
-	.value	0
-	.value	0
-	.quad	.Ltext0
-	.quad	.Letext0-.Ltext0
-	.quad	0
-	.quad	0
-	.section	.debug_line,"",@progbits
-.Ldebug_line0:
-	.section	.debug_str,"MS",@progbits,1
-.LASF0:
-	.string	"stop_frame"
-.LASF3:
-	.string	"dw2-reg-undefined.c"
-.LASF2:
-	.string	"GNU C 4.7.2"
-.LASF1:
-	.string	"first_frame"
-.LASF5:
-	.string	"main"
-.LASF4:
-	.string	"/home/username/src/gdb/testsuite/gdb.dwarf2"
-	.ident	"GCC: (GNU) 4.7.2"
-	.section	.note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.c b/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.c
deleted file mode 100644
index 4868d05..0000000
--- a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
-   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/>.  */
-
-void
-stop_frame ()
-{
-  /* The debug information for this frame is modified in the accompanying
-     .S file, to mark a set of registers as being DW_CFA_same_value.  */
-}
-
-void
-first_frame ()
-{
-  stop_frame ();
-}
-
-int
-main ()
-{
-  first_frame ();
-
-  return 0;
-}
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.exp b/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.exp
deleted file mode 100644
index a57ab8a..0000000
--- a/gdb/testsuite/gdb.dwarf2/dw2-dup-frame.exp
+++ /dev/null
@@ -1,44 +0,0 @@
-# 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
-
-# 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_64 targets.
-if {![istarget "x86_64-*-*"] || ![is_lp64_target]} {
-    return 0
-}
-
-standard_testfile .S
-
-if { [prepare_for_testing $testfile.exp $testfile $srcfile {nodebug}] } {
-    return -1
-}
-
-if ![runto stop_frame] {
-    perror "Failed to stop in stop_frame"
-    return -1
-}
-
-gdb_test "bt" \
-    "#0  stop_frame \[^\r\n\]*\r\nBacktrace stopped: previous frame identical to this frame \\(corrupt stack\\?\\)" \
-    "backtrace from stop_frame"
-
-gdb_test "up" \
-    "Initial frame selected; you cannot go up\\\." \
-    "up from stop_frame"