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cp-tree.h: Declare warn_nontemplate_friend.

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1998-09-03  Benjamin Kosnik  <bkoz@cygnus.com>
	* cp-tree.h: Declare warn_nontemplate_friend.
	* decl2.c (lang_decode_option): Set.
	* lang-options.h: Add -Wnon-template-friend.
	* friend.c (do_friend): Use to toggle non-template function warning.
g++/17054

From-SVN: r22220
This commit is contained in:
Benjamin Kosnik 1998-09-03 16:10:00 +00:00
parent 56e3f54ca0
commit 7f84cec92c
2 changed files with 12 additions and 2 deletions
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10
gcc/cp/decl2.c
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@ -307,6 +307,11 @@ int warn_unknown_pragmas; /* Tri state variable. */
int warn_multichar = 1;
/* Nonzero means warn when non-templatized friend functions are
declared within a template */
int warn_nontemplate_friend = 1;
/* Nonzero means `$' can be in an identifier. */
#ifndef DOLLARS_IN_IDENTIFIERS
@ -704,6 +709,8 @@ lang_decode_option (argc, argv)
/* Set to greater than 1, so that even unknown pragmas in
system headers will be warned about. */
warn_unknown_pragmas = setting * 2;
else if (!strcmp (p, "non-template-friend"))
warn_nontemplate_friend = setting;
else if (!strcmp (p, "comment"))
; /* cpp handles this one. */
else if (!strcmp (p, "comments"))
@ -735,7 +742,8 @@ lang_decode_option (argc, argv)
warn_sign_promo = setting;
/* Only warn about unknown pragmas that are not in system
headers. */
warn_unknown_pragmas = 1;
warn_unknown_pragmas = 1;
warn_nontemplate_friend = setting;
}
else return strings_processed;
}

4
gcc/cp/friend.c
View File

@ -447,7 +447,8 @@ do_friend (ctype, declarator, decl, parmdecls, flags, quals, funcdef_flag)
else
decl = push_template_decl_real (decl, /*is_friend=*/1);
if (! funcdef_flag && ! flag_guiding_decls && ! is_friend_template
if (warn_nontemplate_friend
&& ! funcdef_flag && ! flag_guiding_decls && ! is_friend_template
&& current_template_parms && uses_template_parms (decl))
{
static int explained;
@ -458,6 +459,7 @@ do_friend (ctype, declarator, decl, parmdecls, flags, quals, funcdef_flag)
warning (" (if this is not what you intended, make sure");
warning (" the function template has already been declared,");
warning (" and add <> after the function name here)");
warning (" To disable warning use -Wno-non-template-friend");
explained = 1;
}
}