Check for overflow when bumping new space's top in inlined allocation....

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
===================================================================
--- src/arm/macro-assembler-arm.cc	(revision 6680)
+++ src/arm/macro-assembler-arm.cc	(working copy)
@@ -1151,6 +1151,7 @@
   // Calculate new top and bail out if new space is exhausted. Use result
   // to calculate the new top.
   add(scratch2, result, Operand(obj_size_reg));
+  b(cs, gc_required);

[Rodolph Perfetta, 2011/02/08 16:53:16]

You need to set the flags in the add instruction above (SetCC parameter).

   cmp(scratch2, Operand(ip));
   b(hi, gc_required);
   str(scratch2, MemOperand(topaddr));
@@ -1233,6 +1234,7 @@
   } else {
     add(scratch2, result, Operand(object_size));
   }
+  b(cs, gc_required);

[Rodolph Perfetta, 2011/02/08 16:53:16]

ditto.

   cmp(scratch2, Operand(ip));
   b(hi, gc_required);