https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100450
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:d7c8e6261532e7b2d16221becd5db11ded03e059 commit r10-9810-gd7c8e6261532e7b2d16221becd5db11ded03e059 Author: Jakub Jelinek <ja...@redhat.com> Date: Fri May 7 17:48:37 2021 +0200 libcpp: Fix up pragma preprocessing [PR100450] Since the r0-85991-ga25a8f3be322fe0f838947b679f73d6efc2a412c https://gcc.gnu.org/legacy-ml/gcc-patches/2008-02/msg01329.html changes, so that we handle macros inside of pragmas that should expand macros, during preprocessing we print those pragmas token by token, with CPP_PRAGMA printed as fputs ("#pragma ", print.outf); if (space) fprintf (print.outf, "%s %s", space, name); else fprintf (print.outf, "%s", name); where name is some identifier (so e.g. print #pragma omp parallel or #pragma omp for etc.). Because it ends in an identifier, we need to handle it like an identifier (i.e. CPP_NAME) for the decision whether a space needs to be emitted in between that #pragma whatever or #pragma whatever whatever and following token, otherwise the attached testcase is preprocessed as #pragma omp forreduction(+:red) rather than #pragma omp for reduction(+:red) The cpp_avoid_paste function is only called for this purpose. 2021-05-07 Jakub Jelinek <ja...@redhat.com> PR c/100450 * lex.c (cpp_avoid_paste): Handle token1 CPP_PRAGMA like CPP_NAME. * c-c++-common/gomp/pr100450.c: New test. (cherry picked from commit 170c850e4bd46745e2a5130b5eb09f9fceb98416)
