From e8aeccef15b7ff0532c1bb5e334dc1e86383dd80 Mon Sep 17 00:00:00 2001 From: "Duncan P. N. Exon Smith" Date: Tue, 25 Feb 2014 23:35:13 +0000 Subject: fix crash in SmallDenseMap copy constructor Prevent a crash in the SmallDenseMap copy constructor whenever the other map is not in small mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202206 91177308-0d34-0410-b5e6-96231b3b80d8 --- unittests/ADT/DenseMapTest.cpp | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'unittests') diff --git a/unittests/ADT/DenseMapTest.cpp b/unittests/ADT/DenseMapTest.cpp index fa5d0f2e9e..dd4907104d 100644 --- a/unittests/ADT/DenseMapTest.cpp +++ b/unittests/ADT/DenseMapTest.cpp @@ -209,6 +209,34 @@ TYPED_TEST(DenseMapTest, CopyConstructorTest) { EXPECT_EQ(this->getValue(), copyMap[this->getKey()]); } +// Test copy constructor method where SmallDenseMap isn't small. +TYPED_TEST(DenseMapTest, CopyConstructorNotSmallTest) { + for (int Key = 0; Key < 5; ++Key) + this->Map[this->getKey(Key)] = this->getValue(Key); + TypeParam copyMap(this->Map); + + EXPECT_EQ(5u, copyMap.size()); + for (int Key = 0; Key < 5; ++Key) + EXPECT_EQ(this->getValue(Key), copyMap[this->getKey(Key)]); +} + +// Test copying from a default-constructed map. +TYPED_TEST(DenseMapTest, CopyConstructorFromDefaultTest) { + TypeParam copyMap(this->Map); + + EXPECT_TRUE(copyMap.empty()); +} + +// Test copying from an empty map where SmallDenseMap isn't small. +TYPED_TEST(DenseMapTest, CopyConstructorFromEmptyTest) { + for (int Key = 0; Key < 5; ++Key) + this->Map[this->getKey(Key)] = this->getValue(Key); + this->Map.clear(); + TypeParam copyMap(this->Map); + + EXPECT_TRUE(copyMap.empty()); +} + // Test assignment operator method TYPED_TEST(DenseMapTest, AssignmentTest) { this->Map[this->getKey()] = this->getValue(); -- cgit v1.2.3