[gdb/testsuite] Add KFAILs for gdb.ada FAILs with gcc-11

With gcc-11 we run into:
...
(gdb) print pa_ptr.all^M
That operation is not available on integers of more than 8 bytes.^M
(gdb) KFAIL: gdb.ada/arrayptr.exp: scenario=all: print pa_ptr.all (PRMS: gdb/20991)
...

This is due to PR exp/20991 - "__int128 type support".  Mark this and similar
FAILs as KFAIL.

Also mark this FAIL:
....
(gdb) print pa_ptr(3)^M
cannot subscript or call something of type `foo__packed_array_ptr'^M
(gdb) FAIL: gdb.ada/arrayptr.exp: scenario=minimal: print pa_ptr(3)
...
as a KFAIL for PR ada/28115 - "Support packed array encoded as
DW_TAG_subrange_type".

Tested on x86_64-linux, with gcc-10 and gcc-11.

gdb/testsuite/ChangeLog:

2021-07-21  Tom de Vries  <tdevries@suse.de>

	* gdb.ada/arrayptr.exp: Add KFAILs for PR20991 and PR28115.
	* gdb.ada/exprs.exp: Add KFAILs for PR20991.
	* gdb.ada/packed_array_assign.exp: Same.

3 files changed, 127 insertions, 22 deletions

diff --git a/gdb/testsuite/gdb.ada/arrayptr.exp b/gdb/testsuite/gdb.ada/arrayptr.exp
index 515e212..6067949 100644
--- a/gdb/testsuite/gdb.ada/arrayptr.exp
+++ b/gdb/testsuite/gdb.ada/arrayptr.exp
@@ -49,10 +49,38 @@ foreach_with_prefix scenario {all minimal} {
 
     gdb_test "ptype string_access" "= access array \\(<>\\) of character"
 
-    gdb_test "print pa_ptr.all" \
-	" = \\(10, 20, 30, 40, 50, 60, 62, 63, -23, 42\\)"
+    set kfail_int128support_re \
+	"That operation is not available on integers of more than 8 bytes\\."
+    set kfail_packed_array_range_re \
+	"cannot subscript or call something of type `foo__packed_array_ptr'"
+
+    gdb_test_multiple "print pa_ptr.all" "" {
+	-re -wrap " = \\(10, 20, 30, 40, 50, 60, 62, 63, -23, 42\\)" {
+	    pass $gdb_test_name
+	}
+	-re -wrap $kfail_int128support_re {
+	    kfail gdb/20991 $gdb_test_name
+	}
+    }
 
-    gdb_test "print pa_ptr(3)" " = 30"
+    gdb_test_multiple "print pa_ptr(3)" "" {
+	-re -wrap " = 30" {
+	    pass $gdb_test_name
+	}
+	-re -wrap $kfail_int128support_re {
+	    kfail gdb/20991 $gdb_test_name
+	}
+	-re -wrap $kfail_packed_array_range_re {
+	    kfail gdb/28115 $gdb_test_name
+	}
+    }
 
-    gdb_test "print pa_ptr.all(3)" " = 30"
+    gdb_test_multiple "print pa_ptr.all(3)" "" {
+	-re -wrap " = 30" {
+	    pass $gdb_test_name
+	}
+	-re -wrap $kfail_int128support_re {
+	    kfail gdb/20991 $gdb_test_name
+	}
+    }
 }
diff --git a/gdb/testsuite/gdb.ada/exprs.exp b/gdb/testsuite/gdb.ada/exprs.exp
index 8139abf..480e5e9 100644
--- a/gdb/testsuite/gdb.ada/exprs.exp
+++ b/gdb/testsuite/gdb.ada/exprs.exp
@@ -28,14 +28,34 @@ clean_restart ${testfile}
 set bp_location [gdb_get_line_number "START" ${testdir}/p.adb]
 runto "p.adb:$bp_location"
 
-gdb_test "print X ** Y = Z" \
-         "= true" \
-         "Long_Long_Integer ** Y"
+set kfail_int128support_re \
+    "That operation is not available on integers of more than 8 bytes\\."
+
+gdb_test_multiple "print X ** Y = Z" "Long_Long_Integer ** Y" {
+    -re -wrap "= true" {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
 
-gdb_test "print long_float'min (long_float (X), 8.0)" \
-         "= 7.0" \
-         "long_float'min"
+set cmd "print long_float'min (long_float (X), 8.0)"
+gdb_test_multiple $cmd "long_float'min" {
+    -re -wrap "= 7.0" {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
 
-gdb_test "print long_float'max (long_float (X), 8.0)" \
-         "= 8.0" \
-         "long_float'max"
+set cmd "print long_float'max (long_float (X), 8.0)"
+gdb_test_multiple $cmd "long_float'max" {
+    -re -wrap "= 8.0" {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
diff --git a/gdb/testsuite/gdb.ada/packed_array_assign.exp b/gdb/testsuite/gdb.ada/packed_array_assign.exp
index b6c8cf6..5f34a07 100644
--- a/gdb/testsuite/gdb.ada/packed_array_assign.exp
+++ b/gdb/testsuite/gdb.ada/packed_array_assign.exp
@@ -27,15 +27,72 @@ clean_restart ${testfile}
 
 runto "aggregates.run_test"
 
-gdb_test \
-    "print pra := ((packed_array_assign_x => 2, packed_array_assign_y => 0, packed_array_assign_w => 17), pr, (packed_array_assign_x => 7, packed_array_assign_y => 1, packed_array_assign_w => 23))" \
-    " = \\(\\(packed_array_assign_w => 17, packed_array_assign_x => 2, packed_array_assign_y => 0\\), \\(packed_array_assign_w => 104, packed_array_assign_x => 2, packed_array_assign_y => 3\\), \\(packed_array_assign_w => 23, packed_array_assign_x => 7, packed_array_assign_y => 1\\)\\)" \
-    "value of pra"
-
-gdb_test "print pra(1) := pr" \
-    " = \\(packed_array_assign_w => 104, packed_array_assign_x => 2, packed_array_assign_y => 3\\)"
-gdb_test "print pra(1)" \
-    " = \\(packed_array_assign_w => 104, packed_array_assign_x => 2, packed_array_assign_y => 3\\)"
+set kfail_int128support_re \
+    "That operation is not available on integers of more than 8 bytes\\."
+
+set cmd \
+    [list \
+	 "print pra := " \
+	 "((packed_array_assign_x => 2," \
+	 "packed_array_assign_y => 0," \
+	 "packed_array_assign_w => 17)," \
+	 "pr," \
+	 "(packed_array_assign_x => 7," \
+	 "packed_array_assign_y => 1," \
+	 "packed_array_assign_w => 23))"]
+set cmd [join $cmd]
+set re \
+    [list \
+	 " = \\(\\(packed_array_assign_w => 17," \
+	 "packed_array_assign_x => 2," \
+	 "packed_array_assign_y => 0\\)," \
+	 "\\(packed_array_assign_w => 104," \
+	 "packed_array_assign_x => 2," \
+	 "packed_array_assign_y => 3\\)," \
+	 "\\(packed_array_assign_w => 23," \
+	 "packed_array_assign_x => 7," \
+	 "packed_array_assign_y => 1\\)\\)"]
+set re [join $re]
+gdb_test_multiple $cmd "value of pra" {
+    -re -wrap $re {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
+
+set cmd "print pra(1) := pr"
+set re \
+    [list \
+	 " = \\(packed_array_assign_w => 104," \
+	 "packed_array_assign_x => 2," \
+	 "packed_array_assign_y => 3\\)"]
+set re [join $re]
+gdb_test_multiple $cmd "" {
+    -re -wrap $re {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
+
+set cmd "print pra(1)"
+set re \
+    [list \
+	 " = \\(packed_array_assign_w => 104," \
+	 "packed_array_assign_x => 2," \
+	 "packed_array_assign_y => 3\\)"]
+set re [join $re]
+gdb_test_multiple $cmd "" {
+    -re -wrap $re {
+	pass $gdb_test_name
+    }
+    -re -wrap $kfail_int128support_re {
+	kfail gdb/20991 $gdb_test_name
+    }
+}
 
 gdb_test "print npr := (q000 => 3, r000 => (packed_array_assign_x => 6, packed_array_assign_y => 1, packed_array_assign_w => 117))" \
     " = \\(q000 => 3, r000 => \\(packed_array_assign_w => 117, packed_array_assign_x => 6, packed_array_assign_y => 1\\)\\)" \