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0c80fce42a
I see this failure:
(gdb) run ^M
Starting program: /home/smarchi/build/binutils-gdb/gdb/testsuite/outputs/gdb.dwarf2/dw2-inline-param/dw2-inline-param ^M
Warning:^M
Cannot insert breakpoint 1.^M
Cannot access memory at address 0x113b^M
^M
(gdb) FAIL: gdb.dwarf2/dw2-inline-param.exp: runto: run to *0x113b
The test loads the binary in GDB, grabs the address of a symbol, strips
the binary, reloads it in GDB, runs the program, and then tries to place
a breakpoint at that address. The problem is that the binary is built
as position independent, so the address GDB grabs in the first place
isn't where the code ends up after running.
Fix this by linking the binary as non-position-independent. The
alternative would be to compute the relocated address where to place the
breakpoint, but that's not very straightforward, unfortunately.
I was confused for a while, I was trying to load the binary in GDB
manually to get the symbol address, but GDB was telling me the symbol
could not be found. Meanwhile, it clearly worked in gdb.log. The thing
is that GDB strips the binary in-place, so we don't have access to the
intermediary binary with symbols. Change the test to output the
stripped binary to a separate file instead.
Change-Id: I66c56293df71b1ff49cf748d6784bd0e935211ba
61 lines
1.8 KiB
Plaintext
61 lines
1.8 KiB
Plaintext
# Copyright 2010-2022 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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#
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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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#
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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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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile .S -main.c
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set binfile_stripped ${binfile}-stripped
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if { [prepare_for_testing "failed to prepare" "${testfile}" \
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[list $srcfile2 $srcfile] {nodebug nopie}] } {
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return -1
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}
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set break_at ""
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set test "info addr break_at"
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gdb_test_multiple $test $test {
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-re "Symbol \"break_at\" is at (0x\[0-9a-f\]+) in .*\r\n$gdb_prompt $" {
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set break_at $expect_out(1,string)
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pass $test
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}
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}
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gdb_unload
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# Strip out any labels there as they could corrupt the `main' name.
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set objcopy_program [gdb_find_objcopy]
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set command "$objcopy_program -N block_start -N block_end -N break_at ${binfile} ${binfile_stripped}"
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verbose -log "Executing: $command"
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set result [catch "exec $command" output]
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verbose "result is $result"
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verbose "output is $output"
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if {$result != 0} {
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return -1
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}
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gdb_load ${binfile_stripped}
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if ![runto "*${break_at}"] {
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return -1
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}
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gdb_test "bt" "#0 (0x\[0-9a-f\]+ in )?func \\(funcparam=<optimized out>\\)\r\n#1 main \\(mainparam=<optimized out>\\)\[^\r\n\]*"
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