[gcc(refs/users/guojiufu/heads/guojiufu-branch)] Testsuite: Mark check_effective_target_exceptions_enabled test as C++ test input.

[gcc(refs/users/guojiufu/heads/guojiufu-branch)] Testsuite: Mark check_effective_target_exceptions_enabled test as C++ test input.

[Jiu Fu Guo]

https://gcc.gnu.org/g:8f896fe5cd5fd7162d2996d0c28a6e4647597c2b

commit 8f896fe5cd5fd7162d2996d0c28a6e4647597c2b
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Thu Jun 11 18:19:44 2020 +0100

    Testsuite: Mark check_effective_target_exceptions_enabled test as C++ test input.
    
    The test in check_effective_target_exceptions_enabled uses a C++ keyword `throw`
    and the test fails with a syntax error on any non-g++ test.  I now tell the
    testsuite driver that this is a C++ input file so it runs it as such in all the
    drivers.
    
    gcc/testsuite/ChangeLog:
    
            * lib/target-supports.exp (check_effective_target_exceptions_enabled):
            Mark as C++ test input.

Diff:
---
 gcc/testsuite/lib/target-supports.exp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index a595042b36e..4dbeccd8346 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -9537,6 +9537,7 @@ proc check_effective_target_exceptions_enabled {} {
     return [check_cached_effective_target exceptions_enabled {
 	if { [check_effective_target_exceptions] } {
 	    return [check_no_compiler_messages exceptions_enabled assembly {
+		// C++
 		void foo (void)
 		{
 		    throw 1;