Drop the raw_ostream required buffer size to 1.

 - As best I can tell, we have eliminated all the code which used to require a
   larger buffer size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81912 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 0 deletions

diff --git a/unittests/Support/raw_ostream_test.cpp b/unittests/Support/raw_ostream_test.cpp
index 52639ba7a2..bd2e95cbb5 100644
--- a/unittests/Support/raw_ostream_test.cpp
+++ b/unittests/Support/raw_ostream_test.cpp
@@ -117,4 +117,14 @@ TEST(raw_ostreamTest, BufferEdge) {
   EXPECT_EQ("1.20", printToString(format("%.2f", 1.2), 10));
 }
 
+TEST(raw_ostreamTest, TinyBuffer) {
+  std::string Str;
+  raw_string_ostream OS(Str);
+  OS.SetBufferSize(1);
+  OS << "hello";
+  OS << 1;
+  OS << 'w' << 'o' << 'r' << 'l' << 'd';
+  EXPECT_EQ("hello1world", OS.str());
+}
+
 }