bf3b19212e
* gdb-testsuite-fix-fail-in-gdb.tui-basic.exp.patch OBS-URL: https://build.opensuse.org/package/show/devel:gcc/gdb?expand=0&rev=301
176 lines
6.7 KiB
Diff
176 lines
6.7 KiB
Diff
[gdb/testsuite] Fix FAIL in gdb.tui/basic.exp
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On openSUSE Leap 15.2 aarch64 I ran into:
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FAIL: gdb.tui/basic.exp: check main is where we expect on the screen
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while this is passing on x86_64.
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On x86_64-linux we have at the initial screen dump for "list -q main":
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0 +-/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.tui/tui-layout.c--+
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1 | 15 You should have received a copy of the GNU General Public |
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2 | 16 along with this program. If not, see <http://www.gnu.org/|
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3 | 17 |
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4 | 18 int |
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5 | 19 main () |
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6 | 20 { |
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7 | 21 return 0; |
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8 | 22 } |
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9 | 23 |
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but on aarch64:
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0 +-/home/tdevries/gdb/src/gdb/testsuite/gdb.tui/tui-layout.c--------------+
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1 | 16 along with this program. If not, see <http://www.gnu.org/|
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2 | 17 |
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3 | 18 int |
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4 | 19 main () |
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5 | 20 { |
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6 | 21 return 0; |
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7 | 22 } |
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8 | 23 |
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9 | 24 |
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The cause of the diffferent placement is that we have as line number for main
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on x86_64:
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$ gdb -q -batch outputs/gdb.tui/basic/basic -ex "info line main"
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Line 20 of "tui-layout.c" starts at address 0x4004a7 <main> \
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and ends at 0x4004ab <main+4>.
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and on aarch64 instead:
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$ gdb -q -batch outputs/gdb.tui/basic/basic -ex "info line main"
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Line 21 of "tui-layout.c" starts at address 0x4005f4 <main> \
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and ends at 0x4005f8 <main+4>.
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Fix this by using a new source file main-one-line.c, that implements the
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entire main function on a single line, in order to force the compiler to use
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that line number.
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Also try to do less hard-coding in the test-case.
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Tested on x86_64-linux and aarch64-linux.
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---
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gdb/testsuite/gdb.tui/basic.exp | 46 ++++++++++++++++++++++++-----------
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gdb/testsuite/gdb.tui/main-one-line.c | 18 ++++++++++++++
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2 files changed, 50 insertions(+), 14 deletions(-)
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diff --git a/gdb/testsuite/gdb.tui/basic.exp b/gdb/testsuite/gdb.tui/basic.exp
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index 25a11b2b285..afc770f0073 100644
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--- a/gdb/testsuite/gdb.tui/basic.exp
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+++ b/gdb/testsuite/gdb.tui/basic.exp
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@@ -17,7 +17,11 @@
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tuiterm_env
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-standard_testfile tui-layout.c
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+# Use main-one-line.c to get the line info at a predictable location without
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+# resorting to a dwarf assembly test-case.
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+standard_testfile main-one-line.c
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+
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+set main_line [gdb_get_line_number "int main"]
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if {[build_executable "failed to prepare" ${testfile} ${srcfile}] == -1} {
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return -1
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@@ -34,7 +38,8 @@ gdb_assert {![string match "No Source Available" $text]} \
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"initial source listing"
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Term::command "list -q main"
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-Term::check_contents "list -q main" "21 *return 0"
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+set main_re "int main \\(\\) { return 0; }"
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+Term::check_contents "list -q main" "$main_line *$main_re"
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# Get the first source line.
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set line [Term::get_line 1]
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@@ -49,16 +54,28 @@ if {[Term::wait_for [string_to_regexp $line]] \
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fail "scroll up"
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}
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-# Check the horizontal scrolling. First confirm that 'main ()' is
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-# where we expect it to be. This relies on the current way we
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-# position source code on the screen, which might change in the
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-# future. The important part of this test is detecting the left/right
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-# scrolling, not which line main is actually on.
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-set line_num 6
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-set line [Term::get_line $line_num]
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-gdb_assert {[regexp -- "19\[\\t \]+main \\(\\)" $line]} \
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+# Get the actual screen line that main is on.
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+set main_screen_line -1
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+for { set i 1 } { $i <= $Term::_cols } { incr i } {
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+ set line [Term::get_line $i]
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+ if { [regexp -- "$main_line\[\\t \]+$main_re" $line] } {
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+ set main_screen_line $i
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+ break
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+ }
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+}
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+
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+# Confirm that 'main ()' is where we expect it to be. This relies on the
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+# current way we position source code on the screen, which might change in
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+# the future.
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+gdb_assert { $main_screen_line == 7 } \
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"check main is where we expect on the screen"
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-set regexp "19\[\\t \]+ain \\(\\)"
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+if { $main_screen_line == -1 } {
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+ return 0
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+}
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+
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+# Check the horizontal scrolling.
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+set shifted_main_re [string range $main_re 1 end]
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+set regexp "$main_line\[\\t \]+$shifted_main_re"
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# Send a right arrow.
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send_gdb "\033\[C"
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if {[Term::wait_for $regexp]} {
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@@ -66,11 +83,11 @@ if {[Term::wait_for $regexp]} {
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} else {
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fail "scroll right"
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}
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-set line [Term::get_line $line_num]
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+set line [Term::get_line $main_screen_line]
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# Send a down arrow.
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send_gdb "\033\[B"
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if {[Term::wait_for $regexp] \
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- && [Term::get_line [expr {$line_num - 1}]] == $line} {
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+ && [Term::get_line [expr {$main_screen_line - 1}]] == $line} {
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pass "scroll down"
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} else {
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fail "scroll down"
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@@ -84,7 +101,8 @@ Term::check_contents "asm window shows main" "$hex <main>"
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Term::check_box "asm box" 0 0 80 15
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Term::command "layout split"
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-Term::check_contents "split layout contents" "21 *return 0.*$hex <main>"
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+Term::check_contents "split layout contents" \
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+ "$main_line *$main_re.*$hex <main>"
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Term::check_box "source box in split layout" 0 0 80 7
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Term::check_box "asm box in split layout" 0 6 80 9
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diff --git a/gdb/testsuite/gdb.tui/main-one-line.c b/gdb/testsuite/gdb.tui/main-one-line.c
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new file mode 100644
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index 00000000000..fb88c667637
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--- /dev/null
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+++ b/gdb/testsuite/gdb.tui/main-one-line.c
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@@ -0,0 +1,18 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+ Copyright 2021 Free Software Foundation, Inc.
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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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+
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+int main () { return 0; }
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