[Bug c++/57757] CPP extra inserted whitespace needs to be reviewed for C++11 user-defined literals

[harald at gigawatt dot nl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57757

--- Comment #3 from Harald van Dijk <harald at gigawatt dot nl> ---
Updated testcase, tested with :

#define ID(x) x
extern ID("C")void exit(int);
int main() { exit(0); }

This should be accepted, and is, except when -save-temps is used:

$ ~/gcc-run/bin/g++ -std=c++11 -c test.cc
$ ~/gcc-run/bin/g++ -std=c++11 -save-temps -c test.cc
test.cc:2:8: error: expected unqualified-id before ‘STRING_USERDEF’ token
 extern ID("C")void exit(int);
        ^
test.cc: In function ‘int main()’:
test.cc:3:20: error: ‘exit’ was not declared in this scope
 int main() { exit(0); }
                    ^
$ ~/gcc-run/bin/g++ --version
g++ (GCC) 4.9.0 20130629 (experimental)
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Using sources from git mirror, commit 801070f5acc11e86fd587b583ebe2ce900ab7a5d,
corresponding to svn rev 200565.