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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/48740] Raw C++0x strings and trigraphs mix badly
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D48740

--- Comment #8 from Daniel Kr=C3=BCgler <daniel.kruegler at googlemail dot =
com> 2011-04-23 11:14:01 UTC ---
(In reply to comment #7)
> Created attachment 24079 [details]
> Sorry for the typo, that's what you get for extracting test case. This on=
e is
> better.

I cannot reproduce this warning with gcc 4.7. If I create a program with
observable behaviour like this:

#include <cstdio>

char const *R =3D R"raw(foo%sbar%sfred%sbob?????)raw";

int main()
{
  std::printf("%s\n", R);
}

the output is loss-free and whithout remaining trigraph transformations:

foo%sbar%sfred%sbob?????