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From: Nathan Sidwell <nathan@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc/devel/c++-modules] [Ada] Add second warning for convention C_Variadic_n Date: Mon, 29 Jun 2020 21:04:03 +0000 (GMT) [thread overview] Message-ID: <20200629210403.3ABD0389040A@sourceware.org> (raw) https://gcc.gnu.org/g:0c32ab8232a40d8bb982c0ac13864d2290dc9336 commit 0c32ab8232a40d8bb982c0ac13864d2290dc9336 Author: Eric Botcazou <ebotcazou@adacore.com> Date: Thu Apr 23 14:26:48 2020 +0200 [Ada] Add second warning for convention C_Variadic_n 2020-06-18 Eric Botcazou <ebotcazou@adacore.com> gcc/ada/ * sem_prag.adb (Process_Convention): Give a warning on C_Variadic_n being applied to a subprogram with exactly n parameters. Diff: --- gcc/ada/sem_prag.adb | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb index 689c7282947..e9cfb13a830 100644 --- a/gcc/ada/sem_prag.adb +++ b/gcc/ada/sem_prag.adb @@ -8323,11 +8323,21 @@ package body Sem_Prag is Next_Formal (Formal); end loop; + -- Error out if the number of parameters is lower than n + if Count < Minimum then Error_Msg_Uint_1 := UI_From_Int (Minimum); Error_Pragma_Arg ("argument of pragma% must have at least" & "^ parameters", Arg2); + + -- But warn if it is exactly n because this is useless + + elsif Count = Minimum then + Error_Msg_Uint_1 := UI_From_Int (Minimum + 1); + Error_Msg_N + ("??subprogram should have at least ^ parameters", + Get_Pragma_Arg (Arg2)); end if; end; end if;
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