8163877: Tests added in JDK-8163518 fail on some platforms

Reviewed-by: darcy

test/java/io/CharArrayReader/OverflowInRead.java

@@ -24,7 +24,8 @@
 /* @test
  * @bug 8163518
  * @summary Integer overflow when reading in large buffer
- * @requires (os.simpleArch == "x64" & os.maxMemory > 8g)
+ * @ignore This test has huge memory requirements
+ * @requires (sun.arch.data.model == "64" & os.maxMemory > 8g)
  * @run main/othervm -Xmx8g OverflowInRead
  */
 

test/java/io/StringBufferInputStream/OverflowInRead.java

@@ -24,7 +24,8 @@
 /* @test
  * @bug 8163518
  * @summary Integer overflow when reading in large buffer
- * @requires (os.simpleArch == "x64" & os.maxMemory > 4g)
+ * @ignore This test has huge memory requirements
+ * @requires (sun.arch.data.model == "64" & os.maxMemory > 4g)
  * @run main/othervm -Xmx4g OverflowInRead
  */