[gdb/testsuite] Handle runto fail in gdb.mi/mi-var-cp.exp

On OBS I ran into:
...
PASS: gdb.mi/mi-var-cp.exp: run to mi-var-cp.cc:81 (set breakpoint)
UNRESOLVED: gdb.mi/mi-var-cp.exp: unable to start target
...
followed by 81 FAILs and two more UNRESOLVEDs.

I didn't manage to reproduce this, but I did notice that the initial
problem causing the UNRESOLVED caused all subsequent UNRESOLVEDs and FAILs.

I emulated the problem by commenting out the send_gdb "run\n" in
mi_run_cmd_full.

Fix this by:
- handling mi_run_cmd failure in mi_get_inline_test
- handling mi_run_inline_test failure in gdb.mi/mi-var-cp.exp, and
  other test-cases using mi_get_inline_test

Tested on x86_64-linux.

1 files changed, 15 insertions, 7 deletions

diff --git a/gdb/testsuite/gdb.mi/mi-var-rtti.exp b/gdb/testsuite/gdb.mi/mi-var-rtti.exp
index b574e5c..a0a2e13 100644
--- a/gdb/testsuite/gdb.mi/mi-var-rtti.exp
+++ b/gdb/testsuite/gdb.mi/mi-var-rtti.exp
@@ -109,13 +109,21 @@ proc check_new_derived_with_rtti {var_name var_type testname} {
         "delete varobj for ${var_name} (with RTTI) in $testname"
 }
 
-mi_run_inline_test use_rtti_for_ptr
-mi_run_inline_test use_rtti_for_ref
-mi_run_inline_test use_rtti_for_ptr_child
-mi_run_inline_test use_rtti_for_ref_child
-mi_run_inline_test use_rtti_with_multiple_inheritence
-mi_run_inline_test type_update_when_use_rtti
-mi_run_inline_test skip_type_update_when_not_use_rtti
+set inline_tests {
+    use_rtti_for_ptr
+    use_rtti_for_ref
+    use_rtti_for_ptr_child
+    use_rtti_for_ref_child
+    use_rtti_with_multiple_inheritence
+    type_update_when_use_rtti
+    skip_type_update_when_not_use_rtti
+}
+
+foreach inline_test $inline_tests {
+    if { [mi_run_inline_test $inline_test] < 0 } {
+       return -1
+    }
+}
 
 mi_gdb_exit
 return 0