[committed][gdb/testsuite] Fix re-read FAILs with -readnow

[Tom de Vries]

Hi,

When running the testsuite with target board readnow, we run into:
...
FAIL: gdb.ada/exec_changed.exp: start second
FAIL: gdb.ada/exec_changed.exp: start just first
FAIL: gdb.base/reread.exp: opts= "" "" : run to foo() second time
FAIL: gdb.base/reread.exp: opts= "" "" : second pass: run to foo() second time
FAIL: gdb.base/reread.exp: opts= "-fPIE" "ldflags=-pie" : \
  run to foo() second time
FAIL: gdb.base/reread.exp: opts= "-fPIE" "ldflags=-pie" : second pass: \
  run to foo() second time
...

These are FAILs due to PR26800.

Mark these as KFAILs.

Tested on x86_64-linux.

Committed to trunk.

Thanks,
- Tom

[gdb/testsuite] Fix re-read FAILs with -readnow

gdb/testsuite/ChangeLog:

2020-10-28  Tom de Vries  <tdevries@suse.de>

	* gdb.ada/exec_changed.exp: Add KFAILs for -readnow.
	* gdb.base/reread.exp: Same.

---
 gdb/testsuite/gdb.ada/exec_changed.exp | 8 ++++++++
 gdb/testsuite/gdb.base/reread.exp      | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/gdb/testsuite/gdb.ada/exec_changed.exp b/gdb/testsuite/gdb.ada/exec_changed.exp
index d8ee7597fe..ba14c0e68f 100644
--- a/gdb/testsuite/gdb.ada/exec_changed.exp
+++ b/gdb/testsuite/gdb.ada/exec_changed.exp
@@ -51,6 +51,8 @@ gdb_reinitialize_dir $srcdir/$subdir
 gdb_test "shell mv ${binfile} ${common_binfile}" ".*" ""
 gdb_load ${common_binfile}
 
+set readnow_p [readnow ${common_binfile}]
+
 # Start the program, we should land in the program main procedure
 if { [gdb_start_cmd] < 0 } {
     untested start
@@ -76,6 +78,9 @@ gdb_test "shell touch ${common_binfile}" ".*" ""
 if { [gdb_start_cmd] < 0 } {
     fail "start second"
 } else {
+    if { $readnow_p } {
+	setup_kfail "gdb/26800" *-*-*
+    }
     gdb_test "" \
              "second \\(\\) at .*second.adb.*" \
              "start second"
@@ -103,6 +108,9 @@ if { [gdb_start_cmd] < 0 } {
     gdb_test_no_output "set \$check_gdb_running = 0" "check gdb running"
     fail "start just first"
 } else {
+    if { $readnow_p } {
+	setup_kfail "gdb/26800" *-*-*
+    }
     gdb_test "" \
 	"first \\(\\) at .*first.adb.*" \
 	"start just first"
diff --git a/gdb/testsuite/gdb.base/reread.exp b/gdb/testsuite/gdb.base/reread.exp
index f824156cc3..52c4da79db 100644
--- a/gdb/testsuite/gdb.base/reread.exp
+++ b/gdb/testsuite/gdb.base/reread.exp
@@ -67,6 +67,8 @@ foreach_with_prefix opts {
 	gdb_rename_execfile ${binfile1} ${binfile}
 	gdb_load ${binfile}
 
+	set readnow_p [readnow ${binfile}]
+	
 	# Set a breakpoint at foo
 
 	gdb_test "break foo" \
@@ -97,6 +99,9 @@ foreach_with_prefix opts {
 	    unsupported $test
 	} else {
 	    gdb_run_cmd
+	    if { $readnow_p } {
+		setup_kfail "gdb/26800" *-*-*
+	    }
 	    gdb_test "" "Breakpoint.* foo .* at .*:9.*" $test
 	}
 
@@ -133,6 +138,9 @@ foreach_with_prefix opts {
 	    gdb_rename_execfile ${binfile} ${binfile1}
 	    gdb_rename_execfile ${binfile2} ${binfile}
 	    gdb_run_cmd
+	    if { $readnow_p } {
+		setup_kfail "gdb/26800" *-*-*
+	    }
 	    gdb_test "" "Breakpoint.* foo .* at .*:9.*" \
 		"second pass: run to foo() second time"
 	}