Use -Wtraditional for "would be stringified in traditional C" (PR preprocessor/81794)
libcpp/ChangeLog:
2017-03-24 Eric Gallager <egall@gwmail.gwu.edu>
PR preprocessor/81794
* macro.c (check_trad_stringification): Have warning be controlled
by -Wtraditional.
gcc/testsuite/ChangeLog:
2017-09-17 Eric Gallager <egall@gwmail.gwu.edu>
PR preprocessor/81794
* gcc.dg/pragma-diag-7.c: Update to include check for
stringification.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254981 138bc75d-0d04-0410-961f-82ee72b054a4