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[gdb/testsuite] Allow some tests in gdb.base/restore.exp to be unsupported 

We currently run into:
...
248       n = callee1 (n + l5);
(gdb) PASS: gdb.base/restore.exp: caller5 calls callee1; return callee now
print l1
$51 = <optimized out>
(gdb) FAIL: gdb.base/restore.exp: caller5 calls callee1; return restored l1 \
  to 32492
...

The problem is that we try to access the value of l1 in function caller5, but
variable l1 has no DW_AT_location attribute.  Since l1 is declared using the
register keyword, it's valid for gcc to emit no DW_AT_location at -O0.

Change the FAIL into an UNSUPPORTED.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-09-22  Tom de Vries  <tdevries@suse.de>

	* gdb.base/restore.exp: Allow register variables to be optimized out at
	-O0.
This commit is contained in:
Tom de Vries 2019-09-22 06:14:29 +02:00
parent 7ab78ccbbb
commit 77d036789a
2 changed files with 16 additions and 2 deletions
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5
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2019-09-22 Tom de Vries <tdevries@suse.de>
* gdb.base/restore.exp: Allow register variables to be optimized out at
-O0.
2019-09-20 Ulrich Weigand <uweigand@de.ibm.com>
* gdb.arch/spu-info.exp: Remove file.

13
gdb/testsuite/gdb.base/restore.exp
View File

@ -73,8 +73,17 @@ proc restore_tests { } {
# they should be.
for {set var 1} {$var <= $c} {incr var} {
set expected [expr 0x7eeb + $var]
gdb_test "print l$var" " = $expected" \
"caller$c calls callee$e; return restored l$var to $expected"
set test "caller$c calls callee$e; return restored l$var to $expected"
set pass_pattern " = $expected"
set unsupported_pattern " = <optimized out>"
gdb_test_multiple "print l$var" $test {
-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
pass $test
}
-re "\[\r\n\]*(?:$unsupported_pattern)\[\r\n\]+$gdb_prompt $" {
unsupported $test
}
}
}
}
}