https://bugs.llvm.org/show_bug.cgi?id=38996
Bug ID: 38996
Summary: SmallBitVector::find_last gives incorrect results with
small types
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Support Libraries
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: llvm-bugs@lists.llvm.org, ztur...@google.com
TYPED_TEST(BitVectorTest, SmallFind) {
TypeParam Vec(10, false);
EXPECT_EQ(-1, Vec.find_first());
EXPECT_EQ(-1, Vec.find_last());
Vec.resize(11, true);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(10, Vec.find_last()); // returns 11
Vec.resize(12, false);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(10, Vec.find_last()); // returns 11
Vec.resize(13, true);
EXPECT_EQ(10, Vec.find_first());
EXPECT_EQ(12, Vec.find_last()); // returns 13
}
SmallBitVector fails these tests:
unittests\ADT\BitVectorTest.cpp(192): error: Expected: 10
To be equal to: Vec.find_last()
Which is: 11
unittests\ADT\BitVectorTest.cpp(196): error: Expected: 10
To be equal to: Vec.find_last()
Which is: 11
unittests\ADT\BitVectorTest.cpp(200): error: Expected: 12
To be equal to: Vec.find_last()
Which is: 13
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