[gdb/testsuite] Use c++ flag in c++ test-cases

In some cases, test-cases use c++, but don't add "c++" to the compilation
flags.  This can cause problems with some compilers.

Fix this in some test-cases.

Approved-By: Tom Tromey <tom@tromey.com>

PR testsuite/30380
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30380

4 files changed, 17 insertions, 4 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/gdb-index-cxx.exp b/gdb/testsuite/gdb.dwarf2/gdb-index-cxx.exp
index a62de7b..7083ab7 100644
--- a/gdb/testsuite/gdb.dwarf2/gdb-index-cxx.exp
+++ b/gdb/testsuite/gdb.dwarf2/gdb-index-cxx.exp
@@ -19,6 +19,7 @@ standard_testfile index.cc
 
 set opts {}
 lappend opts debug
+lappend opts c++
 lappend opts additional_flags=-std=c++11
 
 if {[prepare_for_testing "failed to prepare" "${testfile}" \
diff --git a/gdb/testsuite/gdb.dwarf2/method-ptr.exp b/gdb/testsuite/gdb.dwarf2/method-ptr.exp
index 4b4c222..9bb4776 100644
--- a/gdb/testsuite/gdb.dwarf2/method-ptr.exp
+++ b/gdb/testsuite/gdb.dwarf2/method-ptr.exp
@@ -76,7 +76,7 @@ Dwarf::assemble $asm_file {
 }
 
 if { [prepare_for_testing "failed to prepare" ${testfile} \
-	  [list $srcfile $asm_file] {nodebug}] } {
+	  [list $srcfile $asm_file] {nodebug c++}] } {
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.dwarf2/missing-type-name-for-templates.exp b/gdb/testsuite/gdb.dwarf2/missing-type-name-for-templates.exp
index 06bd896..869b29f 100644
--- a/gdb/testsuite/gdb.dwarf2/missing-type-name-for-templates.exp
+++ b/gdb/testsuite/gdb.dwarf2/missing-type-name-for-templates.exp
@@ -25,6 +25,17 @@ require dwarf2_support
 
 standard_testfile .cc .S
 
+set debug_flags {}
+lappend debug_flags debug
+lappend debug_flags c++
+
+set nodebug_flags {}
+lappend nodebug_flags nodebug
+lappend nodebug_flags c++
+
+get_func_info main $debug_flags
+
+
 set asm_file [standard_output_file $srcfile2]
 Dwarf::assemble $asm_file {
     cu {} {
@@ -47,7 +58,8 @@ Dwarf::assemble $asm_file {
 
 	    DW_TAG_subprogram {
 		{DW_AT_name "main"}
-		{MACRO_AT_range "main"}
+		{DW_AT_low_pc $::main_start DW_FORM_addr}
+		{DW_AT_high_pc $::main_end DW_FORM_addr}
 		{DW_AT_type :$int}
 		{DW_AT_external 1 DW_FORM_flag}
 	    } {
@@ -141,7 +153,7 @@ Dwarf::assemble $asm_file {
 }
 
 if { [prepare_for_testing "failed to prepare" ${testfile} \
-	[list $srcfile $asm_file] {nodebug c++}] } {
+	[list $srcfile $asm_file] $nodebug_flags] } {
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.dwarf2/subrange.exp b/gdb/testsuite/gdb.dwarf2/subrange.exp
index 2671f82..d384fb6 100644
--- a/gdb/testsuite/gdb.dwarf2/subrange.exp
+++ b/gdb/testsuite/gdb.dwarf2/subrange.exp
@@ -102,7 +102,7 @@ Dwarf::assemble $asm_file {
 }
 
 if { [prepare_for_testing "failed to prepare" ${testfile} \
-	  [list $srcfile $asm_file] {nodebug}] } {
+	  [list $srcfile $asm_file] {nodebug c++}] } {
     return -1
 }