diff options
Diffstat (limited to 'llvm/lib/Support/raw_ostream.cpp')
| -rw-r--r-- | llvm/lib/Support/raw_ostream.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp index f5a3162e2ba..07497fcd731 100644 --- a/llvm/lib/Support/raw_ostream.cpp +++ b/llvm/lib/Support/raw_ostream.cpp @@ -715,9 +715,10 @@ bool raw_fd_ostream::has_colors() const { /// outs() - This returns a reference to a raw_ostream for standard output. /// Use it like: outs() << "foo" << "bar"; raw_ostream &llvm::outs() { - // Set buffer settings to model stdout behavior. - // Delete the file descriptor when the program exits, forcing error - // detection. If you don't want this behavior, don't use outs(). + // Set buffer settings to model stdout behavior. Delete the file descriptor + // when the program exits, forcing error detection. This means that if you + // ever call outs(), you can't open another raw_fd_ostream on stdout, as we'll + // close stdout twice and print an error the second time. std::error_code EC; static raw_fd_ostream S("-", EC, sys::fs::F_None); assert(!EC); |
