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c++: Fix printing of C++20 template parameter object [PR97014]

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No one is interested in the mangled name of the C++20 template parameter
object for a class NTTP.  So instead of printing

  required for the satisfaction of ‘positive<T::ratio>’ [with T = X<::_ZTAXtl5ratioLin1ELi2EEE>]

let's print

  required for the satisfaction of ‘positive<T::ratio>’ [with T = X<{-1, 2}>]

I don't think adding a test is necessary for this.

gcc/cp/ChangeLog:

	PR c++/97014
	* cxx-pretty-print.c (pp_cxx_template_argument_list): If the
	argument is template_parm_object_p, print its DECL_INITIAL.
This commit is contained in:
Marek Polacek 2020-10-01 16:40:17 -04:00
parent 324118378e
commit 47f09ec971
1 changed files with 2 additions and 0 deletions
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gcc/cp/cxx-pretty-print.c
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@ -1910,6 +1910,8 @@ pp_cxx_template_argument_list (cxx_pretty_printer *pp, tree t)
if (TYPE_P (arg) || (TREE_CODE (arg) == TEMPLATE_DECL
&& TYPE_P (DECL_TEMPLATE_RESULT (arg))))
pp->type_id (arg);
else if (template_parm_object_p (arg))
pp->expression (DECL_INITIAL (arg));
else
pp->expression (arg);
}