forked from Imagelibrary/binutils-gdb
633680620b
If you have set up a backtrace limit, and the backtrace stops
because of this in an inline frame with arguments, you get an
assertion failure:
```
(gdb) bt
(gdb) set backtrace limit 2
(gdb) bt
C:/src/repos/binutils-gdb.git/gdb/frame.c:3346: internal-error: reinflate: Assertion `m_cached_level >= -1' failed.
```
And if this one is fixed, there is another one as well:
```
(gdb) bt
C:/src/repos/binutils-gdb.git/gdb/dwarf2/loc.c:1160: internal-error: dwarf_expr_reg_to_entry_parameter: Assertion `frame != NULL' failed.
```
The reason for both of them is this kind of loop:
```
while (get_frame_type (frame) == INLINE_FRAME)
frame = get_prev_frame (frame);
```
Since get_prev_frame respects the backtrace limit, it will return
NULL, and from there on you can't continue.
This changes these loops to use get_prev_frame_always instead, so
you always get a non-inline frame in the end.
With this backtrace works:
```
(gdb) bt
(gdb)
```
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29865
Approved-By: Andrew Burgess <aburgess@redhat.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/* Copyright (C) 2008-2024 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 is only ever run if it is compiled with a new-enough GCC, but
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we don't want the compilation to fail if compiled by some other
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compiler. */
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#ifdef __GNUC__
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#define ATTR __attribute__((always_inline))
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#else
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#define ATTR
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#endif
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int x, y;
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volatile int z = 0;
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volatile int result;
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void bar(void);
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inline ATTR int func1(int s)
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{
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bar ();
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return x * y + s;
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}
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inline ATTR int func2(void)
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{
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return x * func1 (1);
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}
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int main (void)
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{
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int val;
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x = 7;
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y = 8;
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bar ();
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val = func1 (2);
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result = val;
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val = func2 ();
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result = val;
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return 0;
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}
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