2006-02-01 Robert Schuster <robertschuster@fsfe.org>

	* link.cc:
	(_Jv_Linker::find_field_helper): Added checks.
	(_Jv_Linker::find_field): Use exception swallowing class resolution
	and added early return.
	(_Jv_ThrowNoClassDefFoundErrorTrampoline): New function.
	(_Jv_Linker::link_symbol_table):  Use exception swallowing class
	resolution, added ffi_closure installation routine, use
	_Jv_ThrowNoClassDefFoundError for missing static method.
	(_Jv_Linker::ensure_class_linked): Added string check which does
	not trigger class resolution.
	* java/lang/natClassLoader.cc:
	(_Jv_FindClassNoException): New method.
	* java/lang/Class.h:
	(_Jv_FindClassNoException): New method declaration.
	* include/jvm.h:
	(_Jv_FindClassNoException): New method declaration.
	(_Jv_FindClassFromSignatureNoException): New method declaration.
	* prims.cc:
	(_Jv_FindClassFromSignatureNoException): New method.
        * gcj/javaprims.h:
        (_Jv_equalsUtf8Classname): New method declaration.
        (_Jv_isPrimitiveOrDerived): Dito.
        * prims.cc:
	(_Jv_equalsUtf8Classnames): New method.
        (_Jv_isPrimitiveOrDerived): New method.
        * verify.cc:
        (ref_intersection::equals): Use new classname comparison method.
        (type::compatible): Use new classname comparison method. Added
        check whether LHS' type is java.lang.Object .
        (type::resolve): Added new optional debug message and simplified
        if-expression.
        (type::to_array): Added codepath that generates an array type
        without resolving the element type.

From-SVN: r110474

1 files changed, 24 insertions, 0 deletions

diff --git a/libjava/java/lang/natClassLoader.cc b/libjava/java/lang/natClassLoader.cc
index 797005b..5f4d957 100644
--- a/libjava/java/lang/natClassLoader.cc
+++ b/libjava/java/lang/natClassLoader.cc
@@ -266,6 +266,30 @@ _Jv_CopyClassesToSystemLoader (gnu::gcj::runtime::SystemClassLoader *loader)
   system_class_list = SYSTEM_LOADER_INITIALIZED;
 }
 
+// An internal variant of _Jv_FindClass which simply swallows a
+// NoClassDefFoundError or a ClassNotFoundException. This gives the
+// caller a chance to evaluate the situation and behave accordingly.
+jclass
+_Jv_FindClassNoException (_Jv_Utf8Const *name, java::lang::ClassLoader *loader)
+{
+  jclass klass;
+
+  try
+    {
+      klass = _Jv_FindClass(name, loader);
+    }
+  catch ( java::lang::NoClassDefFoundError *ncdfe )
+    {
+      return NULL;
+    }
+  catch ( java::lang::ClassNotFoundException *cnfe )
+    {
+      return NULL;
+    }
+
+  return klass;
+}
+
 jclass
 _Jv_FindClass (_Jv_Utf8Const *name, java::lang::ClassLoader *loader)
 {