76 lines
2.0 KiB
Plaintext
76 lines
2.0 KiB
Plaintext
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# Copyright 2017 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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# When debugging with "target remote |", the inferior's output is
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# connected to a pipe, and if GDB doesn't flush the pipe while the
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# inferior is running and the pipe becomes full, then the inferior
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# deadlocks:
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#
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# 1. User sets breakpoint, and types "continue"
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#
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# 2. Inferior prints to stdout/stderr before reaching breakpoint
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# location.
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#
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# 3. The output pipe becomes full, so the inferior blocks forever in
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# the printf/write call.
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#
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# 4. The breakpoint is never reached.
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if [target_info exists gdb,noinferiorio] {
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verbose "Skipping because of noinferiorio."
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return
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}
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standard_testfile
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if [prepare_for_testing "failed to prepare" $testfile {} {debug}] {
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return -1
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}
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if { ![runto_main] } then {
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fail "run to main"
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return
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}
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set printing_done_line [gdb_get_line_number "printing done"]
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gdb_test "break $printing_done_line" ".*" "set breakpoint after printing"
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send_gdb "continue\n"
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set expected_lines 3000
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set more 1
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set i 0
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while {$more} {
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set more 0
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gdb_expect {
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-i $inferior_spawn_id
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-ex "this is line number $i" {
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incr i
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if {$i != $expected_lines} {
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set more 1
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}
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}
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}
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}
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gdb_assert {$i == $expected_lines} "saw all lines"
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set test "breakpoint reached"
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gdb_test_multiple "" $test {
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-re "Breakpoint .* main .*$srcfile:$printing_done_line.*$gdb_prompt $" {
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pass $test
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}
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}
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