https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98767
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:87fc34a461cf362947a430d8a241f653fd83bc7b commit r12-86-g87fc34a461cf362947a430d8a241f653fd83bc7b Author: Patrick Palka <ppa...@redhat.com> Date: Fri Apr 23 08:47:02 2021 -0400 c++: Fix pretty printing pointer to function type [PR98767] When pretty printing a pointer to function type, pp_cxx_parameter_declaration_clause ends up always outputting an empty function parameter list because the loop that outputs the list iterates over 'args' instead of 'types', and 'args' is empty when a FUNCTION_TYPE is passed to this routine (as opposed to a FUNCTION_DECL). This patch fixes this by making the loop iterate over 'types' instead. This patch also moves the retrofitted chain-of-PARM_DECLs printing from here to pp_cxx_requires_expr, the only caller that uses it. Doing so lets us easily output the trailing '...' in the parameter list of a variadic function, which this patch also implements. gcc/cp/ChangeLog: PR c++/98767 * cxx-pretty-print.c (pp_cxx_parameter_declaration_clause): Adjust parameter list loop to iterate over 'types' instead of 'args'. Output the trailing '...' for a variadic function. Remove PARM_DECL support. (pp_cxx_requires_expr): Pretty print the parameter list directly instead of going through pp_cxx_parameter_declaration_clause. gcc/testsuite/ChangeLog: PR c++/98767 * g++.dg/concepts/diagnostic17.C: New test.
