Error instead of warning on illegal escape sequences.

The previous behavior for illegal escape sequences (e.g. '\%') in character
and string literals was to emit an error, then treat "\x" as "x".
As reported by a user, this is dangerous, because the warning can go
unnoticed, and other compilers can treat "\x" as "\\x"
(backslash followed by 'x').  Better to error out.

1 files changed, 4 insertions, 0 deletions

diff --git a/Changelog b/Changelog
index baa2b8a2..5bf091ec 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,7 @@
+- In string and character literals, treat illegal escape sequences 
+  (e.g. "\%" or "\0") as an error instead of a warning.
+
+
 Release 2.4, 2014-09-17
 =======================