Tests for proper pre-C++11 handling of "auto"

Author: tautschnig

regression/cpp/auto2/main.cpp

@@ -0,0 +1,7 @@
+int main()
+{
+#ifndef _MSC_VER
+  // Visual Studio uses C++14 by default, thus the below would not be valid
+  auto int x = 42;
+#endif
+}

regression/cpp/auto2/test.desc

@@ -0,0 +1,8 @@
+CORE
+main.cpp
+
+^EXIT=0$
+^SIGNAL=0$
+--
+^warning: ignoring
+^CONVERSION ERROR$

regression/cpp/auto3/main.cpp

@@ -0,0 +1,9 @@
+int main()
+{
+#ifndef _MSC_VER
+  // should yield a parse error unless in C++11 (or later) mode
+  auto x = 42;
+#else
+  intentionally invalid
+#endif
+}

regression/cpp/auto3/test.desc

@@ -0,0 +1,9 @@
+CORE
+main.cpp
+
+^EXIT=(64|1)$
+^SIGNAL=0$
+parse error
+--
+^warning: ignoring
+^CONVERSION ERROR$