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a9c798035d
With gdb.go/hello.go, we run into an xpass:
...
Thread 1 "hello" hit Breakpoint 1, main.main () at hello.go:7^M
7 func main () {^M
(gdb) print st^M
$1 = 0x0 ""^M
(gdb) XPASS: gdb.go/hello.exp: starting string check
...
The xfail is setup as follows:
...
\# This used to print "", i.e., the local "st" initialized as "".
setup_xfail "*-*-*"
gdb_test "print st" \
".* = $hex \"\"" \
"starting string check"
...
It's not clear what gccgo/gc PR this xfail refers to.
It's also not clear why the empty string is both:
- listed as reason for xfail, and
- used in the pass pattern.
Furthermore, there's a comment in the hello.go testcase:
...
st := "Hello, world!" // this intentionally shadows the global "st"
...
while there's no global st variable present, only a variable myst:
...
var myst = "Shall we?"
...
Fix this by splitting up the test-case in two test-cases, hello.{go,exp} and
global-local-var-shadow.{go,exp}.
In hello.exp we no longer attempt to print st before its declaration. In
hello.go we remove the myst variable as well the comment related to shadowing.
In global-local-var-shadow.go, we rename myst to st, such that the comment
related to shadowing is correct. In global-local-var-shadow.exp we attempt to
print the value of st before the local definition, which should print the
value of the global definition, and xfail this with reference to GCC PR93844.
Tested on x86_64-linux, with gccgo 10.
gdb/testsuite/ChangeLog:
2020-02-20 Tom de Vries <tdevries@suse.de>
PR go/17018
* gdb.go/hello.exp: Copy ...
* gdb.go/global-local-var-shadow.exp: ... here. New file. Expect
print of st to print value of global definition. Add xfail for GCC
PR93844.
* gdb.go/hello.exp: Remove printing of st before definition.
* gdb.go/hello.go: Copy ...
* gdb.go/global-local-var-shadow.go: ... here. New test. Rename myst
to st.
* gdb.go/hello.go: Remove myst. Remove comment about shadowing.
47 lines
1.4 KiB
Plaintext
47 lines
1.4 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2012-2020 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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# Basic tests.
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load_lib "go.exp"
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if { [skip_go_tests] } { continue }
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if { [support_go_compile] == 0 } { continue }
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standard_testfile .go
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if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} {debug go}] } {
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return -1
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}
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set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
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if { [go_runto_main] < 0 } {
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untested "could not run to main"
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return -1
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}
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if { [gdb_breakpoint ${srcfile}:${bp_location1}] } {
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pass "setting breakpoint 1"
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}
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gdb_test "cont" "Breakpoint .*:${bp_location1}.*" "going to first breakpoint"
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gdb_test "print st" \
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".* = $hex \"Hello, world!\"" \
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"string after assignment check"
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