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Hi David, Attached is a revised version of the patch which I hope addresses all of your (very helpful) comments on the v3 patch. OK to apply once the sources are back on stage 1 ? Cheers Nick gcc/ChangeLog 2018-02-09 Nick Clifton <nickc@redhat.com> PR 84195 * tree.c (escaped_string): New class. Converts an unescaped string into its escaped equivalent. (warn_deprecated_use): Use the new class to convert the deprecation message, if present. (test_escaped_strings): New self test. (test_c_tests): Add test_escaped_strings. * doc/extend.texi (deprecated): Add a note that the deprecation message is affected by the -fmessage-length option, and that control characters will be escaped. (#pragma GCC error): Document this pragma. (#pragma GCC warning): Likewise. * doc/invoke.texi (-fmessage-length): Document this option's effect on the #warning and #error preprocessor directives and the deprecated attribute. gcc/testsuite/ChangeLog 2018-02-09 Nick Clifton <nickc@redhat.com> PR 84195 * gcc.c-torture/compile/pr84195.c: New test.
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