Specifically, don't print snippets, caret diagnostics, or ranges for
lines over 4096 characters. We copy the line around a few times in our
diagnostics machinery, and we have to print a caret line that's just as
long. This uses a lot of memory just to create a poor user experience as
we print out a line much too long for anyone to read...or spend extra
energy trying to fit it to -fmessage-length.
<rdar://problem/13106850>
llvm-svn: 173976
message. Specifically, we now only line-wrap the first line of te
diagnostic message and assume the remainder is manually formatted. While
adding it back, simplify the logic for doing this.
Finally, add a test that ensures we actually preserve this feature. =D
*Now* its not dead code. Thanks to Doug for the test case.
llvm-svn: 140538
Fangrui Song