Remove F_modify flag from FileOutputBuffer.

This code is dead. There is no use of the feature in the entire LLVM codebase.

Differential Revision: https://reviews.llvm.org/D56939

llvm-svn: 351613

1 files changed, 0 insertions, 49 deletions

diff --git a/llvm/unittests/Support/FileOutputBufferTest.cpp b/llvm/unittests/Support/FileOutputBufferTest.cpp
index 554859587d4..ca5cc7d8c81 100644
--- a/llvm/unittests/Support/FileOutputBufferTest.cpp
+++ b/llvm/unittests/Support/FileOutputBufferTest.cpp
@@ -122,53 +122,4 @@ TEST(FileOutputBuffer, Test) {
   // Clean up.
   ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
 }
-
-TEST(FileOutputBuffer, TestModify) {
-  // Create unique temporary directory for these tests
-  SmallString<128> TestDirectory;
-  {
-    ASSERT_NO_ERROR(
-      fs::createUniqueDirectory("FileOutputBuffer-modify", TestDirectory));
-  }
-
-  SmallString<128> File1(TestDirectory);
-  File1.append("/file");
-  // First write some data.
-  {
-    Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr =
-      FileOutputBuffer::create(File1, 10);
-    ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError()));
-    std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr;
-    memcpy(Buffer->getBufferStart(), "AAAAAAAAAA", 10);
-    ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit()));
-  }
-
-  // Then re-open the file for modify and change only some bytes.
-  {
-    Expected<std::unique_ptr<FileOutputBuffer>> BufferOrErr =
-        FileOutputBuffer::create(File1, size_t(-1), FileOutputBuffer::F_modify);
-    ASSERT_NO_ERROR(errorToErrorCode(BufferOrErr.takeError()));
-    std::unique_ptr<FileOutputBuffer> &Buffer = *BufferOrErr;
-    ASSERT_EQ(10U, Buffer->getBufferSize());
-    uint8_t *Data = Buffer->getBufferStart();
-    Data[0] = 'X';
-    Data[9] = 'X';
-    ASSERT_NO_ERROR(errorToErrorCode(Buffer->commit()));
-  }
-
-  // Finally, re-open the file for read and verify that it has the modified
-  // contents.
-  {
-    ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr = MemoryBuffer::getFile(File1);
-    ASSERT_NO_ERROR(BufferOrErr.getError());
-    std::unique_ptr<MemoryBuffer> Buffer = std::move(*BufferOrErr);
-    ASSERT_EQ(10U, Buffer->getBufferSize());
-    EXPECT_EQ(StringRef("XAAAAAAAAX"), Buffer->getBuffer());
-  }
-
-  // Clean up.
-  ASSERT_NO_ERROR(fs::remove(File1));
-  ASSERT_NO_ERROR(fs::remove(TestDirectory));
-}
-
 } // anonymous namespace