Suppress some warnings on linux.

R=reed@google.com
Review URL: https://codereview.appspot.com/6572046

git-svn-id: http://skia.googlecode.com/svn/trunk@5687 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/MathTest.cpp b/tests/MathTest.cpp
index 086b737..c0babee 100644
--- a/tests/MathTest.cpp
+++ b/tests/MathTest.cpp
@@ -184,14 +184,14 @@
  */
 static bool equal_float_native_skia(float x, uint32_t ni, uint32_t si) {
     if (!(x == x)) {    // NAN
-        return si == SK_MaxS32 || si == SK_MinS32;
+        return ((int32_t)si) == SK_MaxS32 || ((int32_t)si) == SK_MinS32;
     }
     // for out of range, C is undefined, but skia always should return NaN32
     if (x > SK_MaxS32) {
-        return si == SK_MaxS32;
+        return ((int32_t)si) == SK_MaxS32;
     }
     if (x < -SK_MaxS32) {
-        return si == SK_MinS32;
+        return ((int32_t)si) == SK_MinS32;
     }
     return si == ni;
 }
diff --git a/tests/MatrixTest.cpp b/tests/MatrixTest.cpp
index 30542dc..744f765 100644
--- a/tests/MatrixTest.cpp
+++ b/tests/MatrixTest.cpp
@@ -44,8 +44,8 @@
             for (int i = 0; i < 9; ++i) {
                 float aVal = a.get(i);
                 float bVal = b.get(i);
-                int aValI = *reinterpret_cast<int*>(&aVal);
-                int bValI = *reinterpret_cast<int*>(&bVal);
+                int aValI = *SkTCast<int*>(&aVal);
+                int bValI = *SkTCast<int*>(&bVal);
                 if (0 == aVal && 0 == bVal && aValI != bValI) {
                     foundZeroSignDiff = true;
                 } else {
@@ -58,8 +58,8 @@
             for (int i = 0; i < 9; ++i) {
                 float aVal = a.get(i);
                 float bVal = b.get(i);
-                int aValI = *reinterpret_cast<int*>(&aVal);
-                int bValI = *reinterpret_cast<int*>(&bVal);
+                int aValI = *SkTCast<int*>(&aVal);
+                int bValI = *SkTCast<int*>(&bVal);
                 if (sk_float_isnan(aVal) && aValI == bValI) {
                     foundNaN = true;
                 } else {
diff --git a/tests/RTreeTest.cpp b/tests/RTreeTest.cpp
index 0e06337..6962c89 100644
--- a/tests/RTreeTest.cpp
+++ b/tests/RTreeTest.cpp
@@ -14,7 +14,7 @@
 static const size_t MIN_CHILDREN = 6;
 static const size_t MAX_CHILDREN = 11;
 
-static const size_t NUM_RECTS = 200;
+static const int NUM_RECTS = 200;
 static const size_t NUM_ITERATIONS = 100;
 static const size_t NUM_QUERIES = 50;
 
@@ -46,7 +46,7 @@
                          SkTDArray<void*>& found) {
     SkTDArray<void*> expected;
     // manually intersect with every rectangle
-    for (size_t i = 0; i < NUM_RECTS; ++i) {
+    for (int i = 0; i < NUM_RECTS; ++i) {
         if (SkIRect::IntersectsNoEmptyCheck(query, rects[i].rect)) {
             expected.push(rects[i].data);
         }
@@ -106,7 +106,7 @@
         random_data_rects(rand, rects, NUM_RECTS);
 
         // First try bulk-loaded inserts
-        for (size_t i = 0; i < NUM_RECTS; ++i) {
+        for (int i = 0; i < NUM_RECTS; ++i) {
             rtree->insert(rects[i].data, rects[i].rect, true);
         }
         rtree->flushDeferredInserts();
@@ -118,7 +118,7 @@
         REPORTER_ASSERT(reporter, 0 == rtree->getCount());
 
         // Then try immediate inserts
-        for (size_t i = 0; i < NUM_RECTS; ++i) {
+        for (int i = 0; i < NUM_RECTS; ++i) {
             rtree->insert(rects[i].data, rects[i].rect);
         }
         runQueries(reporter, rand, rects, *rtree);