RFR (XS): [9+8u] Signness mismatches comparing size_t with jint

[Aleksey Shipilev]

Hi,

This affects fastdebug compilation for 9 and 8u:

diff -r 2a677339ac35 src/share/vm/gc/shenandoah/shenandoahHeapRegion.hpp
--- a/src/share/vm/gc/shenandoah/shenandoahHeapRegion.hpp	Wed Apr 19 09:20:21
2017 +0200
+++ b/src/share/vm/gc/shenandoah/shenandoahHeapRegion.hpp	Wed Apr 19 16:27:24
2017 +0200
@@ -71,13 +71,13 @@

   // Convert to jint with sanity checking
   inline static jint region_size_bytes_jint() {
-    assert (ShenandoahHeapRegion::RegionSizeBytes <= max_jint, "sanity");
+    assert (ShenandoahHeapRegion::RegionSizeBytes <= (size_t)max_jint, "sanity");
     return (jint)ShenandoahHeapRegion::RegionSizeBytes;
   }

   // Convert to jint with sanity checking
   inline static jint region_size_shift_jint() {
-    assert (ShenandoahHeapRegion::RegionSizeShift <= max_jint, "sanity");
+    assert (ShenandoahHeapRegion::RegionSizeShift <= (size_t)max_jint, "sanity");
     return (jint)ShenandoahHeapRegion::RegionSizeShift;
   }

diff -r 2a677339ac35 src/share/vm/gc/shenandoah/shenandoahHeapRegion.inline.hpp
--- a/src/share/vm/gc/shenandoah/shenandoahHeapRegion.inline.hpp	Wed Apr 19
09:20:21 2017 +0200
+++ b/src/share/vm/gc/shenandoah/shenandoahHeapRegion.inline.hpp	Wed Apr 19
16:27:24 2017 +0200
@@ -43,7 +43,7 @@
 }

 inline void ShenandoahHeapRegion::increase_live_data_words(size_t s) {
-  assert (s <= max_jint, "sanity");
+  assert (s <= (size_t)max_jint, "sanity");
   increase_live_data_words((jint)s);
 }

Testing: hotspot_gc_shenandoah

Thanks,
-Aleksey