gcc/testsuite/

	* lib/target-supports.exp (check_missing_uclibc_feature)
	(check_effective_target_wchar): New procedures.
	* gcc.dg/wchar_t-1.c: Require target wchar.
	* gcc.dg/wint_t-1.c: Likewise.

From-SVN: r122959

gcc/testsuite/ChangeLog

 2007-03-15  Richard Sandiford  <richard@codesourcery.com>
 
+	* lib/target-supports.exp (check_missing_uclibc_feature)
+	(check_effective_target_wchar): New procedures.
+	* gcc.dg/wchar_t-1.c: Require target wchar.
+	* gcc.dg/wint_t-1.c: Likewise.
+
+2007-03-15  Richard Sandiford  <richard@codesourcery.com>
+
 	* lib/target-supports.exp (check_gc_sections_available): Return
 	false for VxWorks targets.
 

gcc/testsuite/gcc.dg/wchar_t-1.c

-/* { dg-do compile } */
+/* { dg-do compile { target wchar } } */
 /* { dg-options "-Wall" } */
 
 /* Compile with -Wall to get a warning if built-in and system wchar_t don't

gcc/testsuite/gcc.dg/wint_t-1.c

-/* { dg-do compile } */
+/* { dg-do compile { target wchar } } */
 /* { dg-options "-Wall" } */
 
 /* Compile with -Wall to get a warning if built-in and system wint_t don't

gcc/testsuite/lib/target-supports.exp

@@ -2073,6 +2073,21 @@ proc check_effective_target_uclibc {} {
     }]
 }
 
+# Return true if this is a uclibc target and if the uclibc feature
+# described by __$feature__ is not present.
+
+proc check_missing_uclibc_feature {feature} {
+    if {[check_no_compiler_messages $feature object "
+	     #include <features.h>
+	     #if defined (__UCLIBC__) && !defined (__${feature}__)
+	     #error FOO
+	     #endif
+	 "]} {
+	return 0
+    }
+    return 1
+}
+
 # Return true if this is a Newlib target.
 
 proc check_effective_target_newlib {} {
@@ -2205,3 +2220,14 @@ proc check_effective_target_vxworks_kernel { } {
 	#endif
     }]
 }
+
+# Return 1 if the target is expected to provide wide character support.
+
+proc check_effective_target_wchar { } {
+    if {[check_missing_uclibc_feature UCLIBC_HAS_WCHAR]} {
+	return 0
+    }
+    return [check_no_compiler_messages wchar assembly {
+	#include <wchar.h>
+    }]
+}