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When navigating in the recorded execution trace via "record goto", we do not set stop_pc. This may trigger an internal error in infrun.c when stepping from that location. Set it. (gdb) rec full (gdb) c Continuing. Breakpoint 1, foo (void) at foo.c:42 42 x = y (gdb) rn foo (void) at foo.c:41 41 y = x (gdb) rec go end Go forward to insn number 98724 at foo.c:42 42 x = y (gdb) n infrun.c:2382: internal-error: resume: Assertion `sig != GDB_SIGNAL_0' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) This happens because there's a breakpoint at PC when the "next" is issued, so that breapoint should be immediately stepped over. That should have been detected/done by proceed, here: if (addr == (CORE_ADDR) -1) { if (pc == stop_pc && breakpoint_here_p (aspace, pc) == ordinary_breakpoint_here && execution_direction != EXEC_REVERSE) /* There is a breakpoint at the address we will resume at, step one instruction before inserting breakpoints so that we do not stop right away (and report a second hit at this breakpoint). Note, we don't do this in reverse, because we won't actually be executing the breakpoint insn anyway. We'll be (un-)executing the previous instruction. */ tp->stepping_over_breakpoint = 1; But since stop_pc was stale, the pc == stop_pc check failed, and left the breakpont at PC inserted. gdb/ * record-btrace.c (record_btrace_goto_begin, record_btrace_goto_end) record_btrace_goto): Move call to print_stack_frame ... (record_btrace_set_replay): ... here. Set stop_pc. * record-full.c (record_full_goto_entry): Set stop_pc. testsuite/ * gdb.btrace/record_goto-step.exp: New.
48 lines
1.5 KiB
Plaintext
48 lines
1.5 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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#
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# Copyright 2013-2015 Free Software Foundation, Inc.
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#
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# Contributed by Intel Corp. <markus.t.metzger@intel.com>
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#
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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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# check for btrace support
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if { [skip_btrace_tests] } { return -1 }
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standard_testfile record_goto.c
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# start inferior
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if [prepare_for_testing record_goto-step.exp $testfile $srcfile] {
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return -1
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}
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if ![runto_main] {
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return -1
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}
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set bp [gdb_get_line_number "fun4.3" $srcfile]
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gdb_breakpoint $srcfile:$bp
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# record the execution until we hit a breakpoint
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gdb_test_no_output "record btrace"
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gdb_continue_to_breakpoint "cont to $bp" ".*fun4\.3.*"
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# reverse-step, then jump to the end of the trace
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gdb_test "reverse-next" ".*fun4\.2.*"
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gdb_test "record goto end" ".*fun4\.3.*"
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# test that we can step away from a breakpoint after jumping to
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# the breakpoint PC
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gdb_test "next" ".*fun4\.4.*"
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