forked from Imagelibrary/binutils-gdb
ef56b00650
This commit adds a test for the following commit:
commit e86e87f77f
Date: Tue Nov 28 16:23:32 2006 +0000
* symtab.c (find_pc_sect_line): Do not return a line before
the start of a symtab.
We have been carrying a test for that commit in the Fedora GDB tree
since that commit was added to GDB. I don't know why the test wasn't
added along with the original commit, but as was written, the test is
pretty gross, it uses objcopy to pull the .text section from an object
file, which was then injected into another source file within a .asm
statement...
... these days we can just make use of the DWARF assembler to achieve
the same results, so I've rewritten the test and think it is worth
adding this to upstream GDB.
The original patch was about about how we find the best symtab and
line table entry, and what to do when GDB can't find a good match.
The new test creates a CU with two functions, only one of which is
covered by the line table. With the above patch reverted GDB returns
an invalid address.
With the above patch reverted I did run the testsuite to see what
other tests might already be exercising this functionality, and I
found two tests:
gdb.dwarf2/dw2-step-out-of-function-no-stmt.exp
gdb.dwarf2/dw2-vendor-extended-opcode.exp
These are pretty similar, they either create minimal, or no line table
for one of the functions in the source file, and as a consequence GDB
returns an unexpected address at some point during the test.
However, both of those tests are really focused on other issues, so I
think this new test does add some value. Plus the new test is not
large, so it's not a huge cost to also run this new test.
Reviewed-By: Tom Tromey <tom@tromey.com>
33 lines
967 B
C
33 lines
967 B
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2023 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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void
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foo (void)
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{
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asm ("foo_label: .globl foo_label");
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}
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int
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main()
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{ /* L1 */
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asm ("main_label: .globl main_label");
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foo (); /* L2 */
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asm ("main_label_2: .globl main_label_2");
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return 0; /* L3 */
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}
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