Fix -Werror=class-memaccess failures in jit testsuite (PR jit/81144)

gcc/testsuite/ChangeLog:
	PR jit/81144
	* jit.dg/test-operator-overloading.cc (make_test_quadratic): Replace
	memset call with zero-initialization.
	* jit.dg/test-quadratic.cc (make_test_quadratic): Likewise.

From-SVN: r249427

gcc/testsuite/ChangeLog

+2017-06-20  David Malcolm  <dmalcolm@redhat.com>
+
+	PR jit/81144
+	* jit.dg/test-operator-overloading.cc (make_test_quadratic): Replace
+	memset call with zero-initialization.
+	* jit.dg/test-quadratic.cc (make_test_quadratic): Likewise.
+
 2017-06-20  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.target/i386/pr80732.c: Include fma4-check.h.

gcc/testsuite/jit.dg/test-operator-overloading.cc

@@ -272,8 +272,7 @@ make_test_quadratic (quadratic_test &testcase)
 void
 create_code (gcc_jit_context *ctxt, void *user_data)
 {
-  struct quadratic_test testcase;
-  memset (&testcase, 0, sizeof (testcase));
+  struct quadratic_test testcase = {};
   testcase.ctxt = ctxt;
   make_types (testcase);
   make_sqrt (testcase);

gcc/testsuite/jit.dg/test-quadratic.cc

@@ -328,8 +328,7 @@ make_test_quadratic (quadratic_test &testcase)
 void
 create_code (gcc_jit_context *ctxt, void *user_data)
 {
-  struct quadratic_test testcase;
-  memset (&testcase, 0, sizeof (testcase));
+  struct quadratic_test testcase = {};
   testcase.ctxt = ctxt;
   make_types (testcase);
   make_sqrt (testcase);