[Bug c++/118147] #pragma GCC diagnostic push causes errors when used in IILE in struct member initializer

[nshead at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118147

Nathaniel Shead <nshead at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2024-12-20
     Ever confirmed|0                           |1
                 CC|                            |nshead at gcc dot gnu.org
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Nathaniel Shead <nshead at gcc dot gnu.org> ---
Confirmed.  The following (untested) minimal patch seems to fix the issue:

diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 23c6a2fd30e..527a858ea52 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -36316,7 +36316,6 @@ cp_parser_cache_defarg (cp_parser *parser, bool nsdmi)

           /* If we run out of tokens, issue an error message.  */
         case CPP_EOF:
-        case CPP_PRAGMA_EOL:
           error_at (token->location, "file ends in default argument");
           return error_mark_node;


I'm not sure why CPP_PRAGMA_EOL is treated as EOF here in the first place?