* prims.cc (_Jv_NewObjectArray): Use const_cast to initialize

	length field of array.
	(_Jv_NewPrimArray): Likewise.
	* gcj/array.h (__JArray): `length' field now const.  Added
	constructor.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37771 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 23 insertions, 4 deletions

diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 00e95143bf6..5c645632735 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,11 @@
+2000-11-26  Tom Tromey  <tromey@cygnus.com>
+
+	* prims.cc (_Jv_NewObjectArray): Use const_cast to initialize
+	length field of array.
+	(_Jv_NewPrimArray): Likewise.
+	* gcj/array.h (__JArray): `length' field now const.  Added
+	constructor.
+
 2000-11-26  Anthony Green  <green@redhat.com>
 
 	* javax/naming/spi/NamingManager.java,
diff --git a/libjava/gcj/array.h b/libjava/gcj/array.h
index b3ba9938228..8d280857ffe 100644
--- a/libjava/gcj/array.h
+++ b/libjava/gcj/array.h
@@ -17,8 +17,15 @@ extern "Java" {
 
 class __JArray : public java::lang::Object
 {
+protected:
+  // This is just a hack to work around a warning emitted by the C++
+  // compiler.  We initialize `length' evilly, but it doesn't know
+  // that.
+  __JArray () : length (0)
+  {
+  }
 public:
-  jsize length;
+  const jsize length;
   friend jsize JvGetArrayLength (__JArray*);
 };
 
diff --git a/libjava/prims.cc b/libjava/prims.cc
index b6ac7f87b81..c6b8d2030e1 100644
--- a/libjava/prims.cc
+++ b/libjava/prims.cc
@@ -411,8 +411,10 @@ _Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
   obj = (jobjectArray) _Jv_AllocArray (size, klass);
   if (__builtin_expect (! obj, false))
     JvThrow (no_memory);
-  obj->length = count;
-  jobject *ptr = elements (obj);
+  // Cast away const.
+  jsize *lp = const_cast<jsize *> (&obj->length);
+  *lp = count;
+  jobject *ptr = elements(obj);
   // We know the allocator returns zeroed memory.  So don't bother
   // zeroing it again.
   if (init)
@@ -446,7 +448,9 @@ _Jv_NewPrimArray (jclass eltype, jint count)
   __JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count, klass);
   if (__builtin_expect (! arr, false))
     JvThrow (no_memory);
-  arr->length = count;
+  // Cast away const.
+  jsize *lp = const_cast<jsize *> (&arr->length);
+  *lp = count;
   // Note that we assume we are given zeroed memory by the allocator.
 
   return arr;