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111d19818a
PR cli/17151 points out that "set height 1" has pathological behavior in gdb. What I see is that gdb will endlessly print the pagination prompt. This patch takes a simple and expedient approach to a fix: pretend that the height is really 2. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=17151
128 lines
4.0 KiB
Plaintext
128 lines
4.0 KiB
Plaintext
# Copyright 1992-2022 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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# This file was written by Fred Fish. (fnf@cygnus.com)
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gdb_exit
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gdb_start
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gdb_test_no_output "set pagination off"
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gdb_test "show pagination" "State of pagination is off.*" "pagination is off"
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gdb_test_sequence "help" "unpaged help" {
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"List of classes of commands:"
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""
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"aliases -- User-defined aliases of other commands"
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"breakpoints -- Making program stop at certain points"
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"data -- Examining data"
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"files -- Specifying and examining files"
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"internals -- Maintenance commands"
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"obscure -- Obscure features"
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"running -- Running the program"
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"stack -- Examining the stack"
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"status -- Status inquiries"
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"support -- Support facilities"
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"tracepoints -- Tracing of program execution without stopping the program"
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"user-defined -- User-defined commands"
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""
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"Type .help. followed by a class name for a list of commands in that class."
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"Type .help. followed by command name for full documentation."
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"Command name abbreviations are allowed if unambiguous."
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}
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gdb_test_no_output "set pagination on"
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gdb_test "show pagination" "State of pagination is on.*" "pagination is on"
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gdb_test_no_output "set height 10"
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send_gdb "help\n"
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gdb_expect_list "paged help" \
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".*$pagination_prompt" {
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"List of classes of commands:"
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""
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"aliases -- User-defined aliases of other commands"
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"breakpoints -- Making program stop at certain points"
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"data -- Examining data"
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"files -- Specifying and examining files"
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"internals -- Maintenance commands"
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"obscure -- Obscure features"
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"running -- Running the program"
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}
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gdb_test "q"
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gdb_test_no_output "set height 5"
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send_gdb "printf \"1\\n2\\n3\\n4\\n5\\n6\\n7\\n8\\n9\\n10\\n11\"\n"
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gdb_expect_list "paged count" \
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".*$pagination_prompt" {
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1
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2
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3
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4
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}
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send_gdb "c\n"
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gdb_expect_list "paged count remainder" "${gdb_prompt} " {
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5
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6
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7
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8
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9
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10
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11
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}
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set fours [string repeat 4 40]
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set str "1\\n2\\n3\\n$fours\\n5\\n"
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# Avoid some confusing output from readline.
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gdb_test_no_output "set editing off"
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gdb_test_no_output "set width 30"
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send_gdb "printf \"$str\"\n"
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gdb_expect_list "paged count for interrupt" \
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".*$pagination_prompt" \
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[list 1\r\n 2\r\n 3\r\n 444444444444444444444444444444]
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gdb_test "q" "Quit" "quit while paging"
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# Check that width/height of sqrt(INT_MAX) is treated as unlimited, as
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# well as "0" and explicit "unlimited".
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foreach_with_prefix size {"0" "0x80000000" "unlimited"} {
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# Alternate between "non-unlimited" values and "unlimited" values,
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# to make sure we're not seeing stale internal state.
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gdb_test "set width 200"
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gdb_test "show width" \
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"Number of characters gdb thinks are in a line is 200\\."
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gdb_test "set height 200"
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gdb_test "show height" \
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"Number of lines gdb thinks are in a page is 200\\."
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gdb_test "set width $size"
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gdb_test "show width unlimited" \
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"Number of characters gdb thinks are in a line is unlimited\\."
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gdb_test "set height $size"
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gdb_test "show height unlimited" \
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"Number of lines gdb thinks are in a page is unlimited\\."
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}
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gdb_test "set width -1" "integer -1 out of range"
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gdb_test "set height -1" "integer -1 out of range"
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# A height of 1 used to cause pathological behavior -- it would
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# endlessly prompt for paging without printing anything.
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gdb_test_no_output "set height 1"
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gdb_test "print 23" " = 23"
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