Patch: zero allocated memory

[Tom Tromey]

I'm committing this patch.  We've defined our memory allocation
interfaces to return cleared memory.  This fixes one we missed.

2000-02-20  Tom Tromey  <tromey@cygnus.com>

	* boehm.cc (_Jv_AllocBytes): Clear returned memory.

Tom

Index: boehm.cc
===================================================================
RCS file: /cvs/java/libgcj/libjava/boehm.cc,v
retrieving revision 1.13
diff -u -r1.13 boehm.cc
--- boehm.cc	2000/01/21 23:50:30	1.13
+++ boehm.cc	2000/02/21 02:51:54
@@ -321,7 +321,14 @@
 void *
 _Jv_AllocBytes (jsize size)
 {
-  return GC_GENERIC_MALLOC (size, PTRFREE);
+  void *r = GC_GENERIC_MALLOC (size, PTRFREE);
+  // We have to explicitly zero memory here, as the GC doesn't
+  // guarantee that PTRFREE allocations are zeroed.  Note that we
+  // don't have to do this for other allocation types because we set
+  // the `ok_init' flag in the type descriptor.
+  if (r != NULL)
+    memset (r, 0, size);
+  return r;
 }
 
 static void