[test][cleanup] Fix -Wshadow warnings in unittests

Bug: v8:12244,v8:12245
Change-Id: I0bcc6dcc148138a6c3b2c87fd8819a9e809e5668
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3182230
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77080}

test/unittests/compiler/control-equivalence-unittest.cc

@@ -28,15 +28,15 @@ class ControlEquivalenceTest : public GraphTest {
   }
 
  protected:
-  void ComputeEquivalence(Node* node) {
+  void ComputeEquivalence(Node* end_node) {
-    graph()->SetEnd(graph()->NewNode(common()->End(1), node));
+    graph()->SetEnd(graph()->NewNode(common()->End(1), end_node));
     if (FLAG_trace_turbo) {
       SourcePositionTable table(graph());
       NodeOriginTable table2(graph());
       StdoutStream{} << AsJSON(*graph(), &table, &table2);
     }
     ControlEquivalence equivalence(zone(), graph());
-    equivalence.Run(node);
+    equivalence.Run(end_node);
     classes_.resize(graph()->NodeCount());
     for (Node* node : all_nodes_) {
       classes_[node->id()] = equivalence.ClassOf(node);

test/unittests/compiler/graph-reducer-unittest.cc

@@ -712,7 +712,7 @@ TEST_F(GraphReducerTest, Forwarding3) {
 
     A1Forwarder r;
 
-    for (size_t i = 0; i < 3; i++) {
+    for (size_t j = 0; j < 3; j++) {
       size_t before = graph()->NodeCount();
       ReduceGraph(&r);
       EXPECT_EQ(before, graph()->NodeCount());

test/unittests/compiler/loop-peeling-unittest.cc

@@ -523,10 +523,10 @@ TEST_F(LoopPeelingTest, SimpleLoopWithUnmarkedExit) {
 
   {
     LoopTree* loop_tree = GetLoopTree();
-    LoopTree::Loop* loop = loop_tree->outer_loops()[0];
+    LoopTree::Loop* outer_loop = loop_tree->outer_loops()[0];
     LoopPeeler peeler(graph(), common(), loop_tree, zone(), source_positions(),
                       node_origins());
-    EXPECT_FALSE(peeler.CanPeel(loop));
+    EXPECT_FALSE(peeler.CanPeel(outer_loop));
   }
 }
 

test/unittests/compiler/scheduler-rpo-unittest.cc

@@ -106,8 +106,8 @@ TEST_F(SchedulerRPOTest, Line) {
     BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
     CheckRPONumbers(order, 1 + i, false);
 
-    for (size_t i = 0; i < schedule.BasicBlockCount(); i++) {
+    for (size_t j = 0; j < schedule.BasicBlockCount(); j++) {
-      BasicBlock* block = schedule.GetBlockById(BasicBlock::Id::FromSize(i));
+      BasicBlock* block = schedule.GetBlockById(BasicBlock::Id::FromSize(j));
       if (block->rpo_number() >= 0 && block->SuccessorCount() == 1) {
         EXPECT_EQ(block->rpo_number() + 1, block->SuccessorAt(0)->rpo_number());
       }

test/unittests/compiler/typer-unittest.cc

@@ -200,7 +200,7 @@ class TyperTest : public TypedGraphTest {
       Type r1 = RandomRange();
       Type r2 = RandomRange();
       Type expected_type = TypeBinaryOp(op, r1, r2);
-      for (int i = 0; i < 10; i++) {
+      for (int j = 0; j < 10; j++) {
         double x1 = RandomInt(r1.AsRange());
         double x2 = RandomInt(r2.AsRange());
         double result_value = opfun(x1, x2);
@@ -229,7 +229,7 @@ class TyperTest : public TypedGraphTest {
       Type r1 = RandomRange();
       Type r2 = RandomRange();
       Type expected_type = TypeBinaryOp(op, r1, r2);
-      for (int i = 0; i < 10; i++) {
+      for (int j = 0; j < 10; j++) {
         double x1 = RandomInt(r1.AsRange());
         double x2 = RandomInt(r2.AsRange());
         bool result_value = opfun(x1, x2);
@@ -249,7 +249,7 @@ class TyperTest : public TypedGraphTest {
       Type r1 = RandomRange(true);
       Type r2 = RandomRange(true);
       Type expected_type = TypeBinaryOp(op, r1, r2);
-      for (int i = 0; i < 10; i++) {
+      for (int j = 0; j < 10; j++) {
         int32_t x1 = static_cast<int32_t>(RandomInt(r1.AsRange()));
         int32_t x2 = static_cast<int32_t>(RandomInt(r2.AsRange()));
         double result_value = opfun(x1, x2);

test/unittests/heap/embedder-tracing-unittest.cc

@@ -153,7 +153,7 @@ TEST_F(LocalEmbedderHeapTracerWithIsolate,
     EmbedderStackStateScope scope(
         &local_tracer, EmbedderHeapTracer::EmbedderStackState::kNoHeapPointers);
     {
-      EmbedderStackStateScope scope(
+      EmbedderStackStateScope nested_scope(
           &local_tracer,
           EmbedderHeapTracer::EmbedderStackState::kMayContainHeapPointers);
       EXPECT_CALL(

test/unittests/heap/local-heap-unittest.cc

@@ -132,8 +132,8 @@ class BackgroundThreadForGCEpilogue final : public v8::base::Thread {
       unparked_scope.emplace(&lh);
     }
     {
-      base::Optional<UnparkedScope> unparked_scope;
+      base::Optional<UnparkedScope> nested_unparked_scope;
-      if (parked_) unparked_scope.emplace(&lh);
+      if (parked_) nested_unparked_scope.emplace(&lh);
       lh.AddGCEpilogueCallback(&GCEpilogue::Callback, epilogue_);
     }
     epilogue_->NotifyStarted();
@@ -141,8 +141,8 @@ class BackgroundThreadForGCEpilogue final : public v8::base::Thread {
       lh.Safepoint();
     }
     {
-      base::Optional<UnparkedScope> unparked_scope;
+      base::Optional<UnparkedScope> nested_unparked_scope;
-      if (parked_) unparked_scope.emplace(&lh);
+      if (parked_) nested_unparked_scope.emplace(&lh);
       lh.RemoveGCEpilogueCallback(&GCEpilogue::Callback, epilogue_);
     }
   }

test/unittests/heap/safepoint-unittest.cc

@@ -82,7 +82,7 @@ TEST_F(SafepointTest, StopParkedThreads) {
   CHECK_EQ(safepoints, kRuns);
 }
 
-static const int kRuns = 10000;
+static const int kIterations = 10000;
 
 class RunningThread final : public v8::base::Thread {
  public:
@@ -95,7 +95,7 @@ class RunningThread final : public v8::base::Thread {
     LocalHeap local_heap(heap_, ThreadKind::kBackground);
     UnparkedScope unparked_scope(&local_heap);
 
-    for (int i = 0; i < kRuns; i++) {
+    for (int i = 0; i < kIterations; i++) {
       counter_->fetch_add(1);
       if (i % 100 == 0) local_heap.Safepoint();
     }

test/unittests/heap/spaces-unittest.cc

@@ -189,15 +189,16 @@ TEST_F(SpacesTest, FreeListManySelectFreeListCategoryType) {
     }
 
     for (size_t size : sizes) {
-      FreeListCategoryType cat = free_list.SelectFreeListCategoryType(size);
+      FreeListCategoryType selected =
-      if (cat == free_list.last_category_) {
+          free_list.SelectFreeListCategoryType(size);
-        // If cat == last_category, then we make sure that |size| indeeds fits
+      if (selected == free_list.last_category_) {
-        // in the last category.
+        // If selected == last_category, then we make sure that |size| indeeds
-        EXPECT_LE(free_list.categories_min[cat], size);
+        // fits in the last category.
+        EXPECT_LE(free_list.categories_min[selected], size);
       } else {
-        // Otherwise, size should fit in |cat|, but not in |cat+1|.
+        // Otherwise, size should fit in |selected|, but not in |selected+1|.
-        EXPECT_LE(free_list.categories_min[cat], size);
+        EXPECT_LE(free_list.categories_min[selected], size);
-        EXPECT_LT(size, free_list.categories_min[cat + 1]);
+        EXPECT_LT(size, free_list.categories_min[selected + 1]);
       }
     }
   }
@@ -268,25 +269,26 @@ TEST_F(SpacesTest,
     }
 
     for (size_t size : sizes) {
-      FreeListCategoryType cat =
+      FreeListCategoryType selected =
           free_list.SelectFastAllocationFreeListCategoryType(size);
       if (size <= FreeListManyCachedFastPath::kTinyObjectMaxSize) {
         // For tiny objects, the first category of the fast path should be
         // chosen.
-        EXPECT_TRUE(cat == FreeListManyCachedFastPath::kFastPathFirstCategory);
+        EXPECT_TRUE(selected ==
+                    FreeListManyCachedFastPath::kFastPathFirstCategory);
       } else if (size >= free_list.categories_min[free_list.last_category_] -
                              FreeListManyCachedFastPath::kFastPathOffset) {
         // For objects close to the minimum of the last category, the last
         // category is chosen.
-        EXPECT_EQ(cat, free_list.last_category_);
+        EXPECT_EQ(selected, free_list.last_category_);
       } else {
         // For other objects, the chosen category must satisfy that its minimum
         // is at least |size|+1.85k.
-        EXPECT_GE(free_list.categories_min[cat],
+        EXPECT_GE(free_list.categories_min[selected],
                   size + FreeListManyCachedFastPath::kFastPathOffset);
         // And the smaller categoriy's minimum is less than |size|+1.85k
         // (otherwise it would have been chosen instead).
-        EXPECT_LT(free_list.categories_min[cat - 1],
+        EXPECT_LT(free_list.categories_min[selected - 1],
                   size + FreeListManyCachedFastPath::kFastPathOffset);
       }
     }

test/unittests/interpreter/bytecode-array-builder-unittest.cc

@@ -713,11 +713,11 @@ TEST_F(BytecodeArrayBuilderTest, BackwardJumps) {
       .JumpLoop(&loop_header, 0, 0)
       .Bind(&after_loop);
   for (int i = 0; i < 42; i++) {
-    BytecodeLabel after_loop;
+    BytecodeLabel also_after_loop;
     // Conditional jump to force the code after the JumpLoop to be live.
-    builder.JumpIfNull(&after_loop)
+    builder.JumpIfNull(&also_after_loop)
         .JumpLoop(&loop_header, 0, 0)
-        .Bind(&after_loop);
+        .Bind(&also_after_loop);
   }
 
   // Add padding to force wide backwards jumps.

test/unittests/wasm/module-decoder-unittest.cc

@@ -127,32 +127,32 @@ namespace module_decoder_unittest {
 
 #define EXPECT_VERIFIES(data)                                       \
   do {                                                              \
-    ModuleResult result = DecodeModule(data, data + sizeof(data)); \
+    ModuleResult _result = DecodeModule(data, data + sizeof(data)); \
-    EXPECT_OK(result);                                             \
+    EXPECT_OK(_result);                                             \
   } while (false)
 
 #define EXPECT_FAILURE_LEN(data, length)                      \
   do {                                                        \
-    ModuleResult result = DecodeModule(data, data + length); \
+    ModuleResult _result = DecodeModule(data, data + length); \
-    EXPECT_FALSE(result.ok());                               \
+    EXPECT_FALSE(_result.ok());                               \
   } while (false)
 
 #define EXPECT_FAILURE(data) EXPECT_FAILURE_LEN(data, sizeof(data))
 
 #define EXPECT_FAILURE_WITH_MSG(data, msg)                          \
   do {                                                              \
-    ModuleResult result = DecodeModule(data, data + sizeof(data)); \
+    ModuleResult _result = DecodeModule(data, data + sizeof(data)); \
-    EXPECT_FALSE(result.ok());                                     \
+    EXPECT_FALSE(_result.ok());                                     \
-    if (!result.ok()) {                                            \
+    if (!_result.ok()) {                                            \
-      EXPECT_THAT(result.error().message(), HasSubstr(msg));       \
+      EXPECT_THAT(_result.error().message(), HasSubstr(msg));       \
     }                                                               \
   } while (false)
 
 #define EXPECT_OFF_END_FAILURE(data, min)                              \
   do {                                                                 \
     STATIC_ASSERT(min < arraysize(data));                              \
-    for (size_t length = min; length < arraysize(data); length++) { \
+    for (size_t _length = min; _length < arraysize(data); _length++) { \
-      EXPECT_FAILURE_LEN(data, length);                             \
+      EXPECT_FAILURE_LEN(data, _length);                               \
     }                                                                  \
   } while (false)
 

testing/gtest-support.h

@@ -36,21 +36,20 @@ GET_TYPE_NAME(double)
 // |var| while inside the loop body.
 #define TRACED_FOREACH(_type, _var, _container)                          \
   for (_type const _var : _container)                                    \
-    for (bool _done = false; !_done;)                                    \
+    for (bool _var##_done = false; !_var##_done;)                        \
       for (SCOPED_TRACE(::testing::Message() << #_var << " = " << _var); \
-           !_done; _done = true)
+           !_var##_done; _var##_done = true)
-
 
 // TRACED_FORRANGE(type, var, low, high) expands to a loop that assigns |var|
 // every value in the range |low| to (including) |high| and adds a
 // SCOPED_TRACE() message for the |var| while inside the loop body.
 // TODO(bmeurer): Migrate to C++11 once we're ready.
 #define TRACED_FORRANGE(_type, _var, _low, _high)                          \
-  for (_type _i = _low; _i <= _high; ++_i)                                 \
+  for (_type _var##_i = _low; _var##_i <= _high; ++_var##_i)               \
-    for (bool _done = false; !_done;)                                      \
+    for (bool _var##_done = false; !_var##_done;)                          \
-      for (_type const _var = _i; !_done;)                                 \
+      for (_type const _var = _var##_i; !_var##_done;)                     \
         for (SCOPED_TRACE(::testing::Message() << #_var << " = " << _var); \
-             !_done; _done = true)
+             !_var##_done; _var##_done = true)
 
 }  // namespace internal
 }  // namespace testing