Invert --cfg debug to --cfg ndebug

Many people will be very confused that their debug! statements aren't working
when they first use rust only to learn that they should have been building with
`--cfg debug` the entire time. This inverts the meaning of the flag to instead
of enabling debug statements, now it disables debug statements.

This way the default behavior is a bit more reasonable, and requires less
end-user configuration. Furthermore, this turns on debug by default when
building the rustc compiler.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/test/run-pass/conditional-debug-macro-on.rs b/src/test/run-pass/conditional-debug-macro-on.rs
index 65b751a5826..2fe6d179348 100644
--- a/src/test/run-pass/conditional-debug-macro-on.rs
+++ b/src/test/run-pass/conditional-debug-macro-on.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 // xfail-fast compile-flags directive doesn't work for check-fast
-// compile-flags: --cfg debug
 // exec-env:RUST_LOG=conditional-debug-macro-on=4
 
 fn main() {
@@ -18,4 +17,4 @@ fn main() {
     debug!({ if true { return; } });
 
     fail!();
-}
\ No newline at end of file
+}