From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id 356C73857010; Fri, 28 Oct 2022 17:39:23 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 356C73857010 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1666978763; bh=p//oUUfAMsg/klLYlgpw2BLobTWhqP8Ju23Fwn5Qqig=; h=From:To:Subject:Date:From; b=x5zP+xsZnvbatsyxoVytEDA0Y+L/IQSPsbxSolzBo8SMyU4ourryIZ46cLMO7BdDS QKIXAp5dna/WvjAjbsVWCAyDiPGNt0dmnhXNAssNcqM5pnthGz9TZ5ymlUo7u86YFe yMulEblKAjZXvEOdRea56TQoQTas/H7rqNr8prVQ= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Adhemerval Zanella To: glibc-cvs@sourceware.org Subject: [glibc/azanella/clang] elf: Suppress unused function clang for __ifunc_resolver X-Act-Checkin: glibc X-Git-Author: Adhemerval Zanella X-Git-Refname: refs/heads/azanella/clang X-Git-Oldrev: a532b263f83bbf7f672224967200d626340e0525 X-Git-Newrev: 24f34ab598e2ae3aeeaceb8466faa0a4f45b993b Message-Id: <20221028173923.356C73857010@sourceware.org> Date: Fri, 28 Oct 2022 17:39:23 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=24f34ab598e2ae3aeeaceb8466faa0a4f45b993b commit 24f34ab598e2ae3aeeaceb8466faa0a4f45b993b Author: Adhemerval Zanella Date: Thu Aug 4 09:43:18 2022 -0300 elf: Suppress unused function clang for __ifunc_resolver Diff: --- elf/ifuncmain9.c | 4 ++++ elf/tst-ifunc-fault-lazy.c | 4 ++++ include/libc-symbols.h | 6 +++++- 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/elf/ifuncmain9.c b/elf/ifuncmain9.c index d59778d6fe..579c4baed8 100644 --- a/elf/ifuncmain9.c +++ b/elf/ifuncmain9.c @@ -22,6 +22,7 @@ # include # include +# include /* Do not use the test framework, so that the process setup is not disturbed. */ @@ -40,6 +41,8 @@ implementation (void) return random_constant; } +DIAG_PUSH_NEEDS_COMMENT_CLANG; +DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wunused-function"); static __typeof__ (implementation) * inhibit_stack_protector resolver (void) @@ -47,6 +50,7 @@ resolver (void) ++resolver_called; return implementation; } +DIAG_POP_NEEDS_COMMENT_CLANG; static int magic (void) __attribute__ ((ifunc ("resolver"))); diff --git a/elf/tst-ifunc-fault-lazy.c b/elf/tst-ifunc-fault-lazy.c index 2d72c54081..da73a54850 100644 --- a/elf/tst-ifunc-fault-lazy.c +++ b/elf/tst-ifunc-fault-lazy.c @@ -21,6 +21,7 @@ relocations. */ #include +#include #ifdef HAVE_GCC_IFUNC @@ -34,6 +35,8 @@ implementation (void) *p = 0; } +DIAG_PUSH_NEEDS_COMMENT_CLANG; +DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wunused-function"); static __typeof__ (implementation) * resolver (void) { @@ -42,6 +45,7 @@ resolver (void) *p = 0; return implementation; } +DIAG_POP_NEEDS_COMMENT_CLANG; static void magic (void) __attribute__ ((ifunc ("resolver"))); diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 140ee0ff6d..579eca0405 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -86,6 +86,7 @@ /* Obtain the definition of symbol_version_reference. */ #include +#include /* When PIC is defined and SHARED isn't defined, we are building PIE by default. */ @@ -750,7 +751,10 @@ for linking") # define __ifunc(type_name, name, expr, arg, init) \ extern __typeof (type_name) name __attribute__ \ ((ifunc (#name "_ifunc"))); \ - __ifunc_resolver (type_name, name, expr, arg, init, static) + DIAG_PUSH_NEEDS_COMMENT_CLANG; \ + DIAG_IGNORE_NEEDS_COMMENT_CLANG (13, "-Wunused-function"); \ + __ifunc_resolver (type_name, name, expr, arg, init, static); \ + DIAG_POP_NEEDS_COMMENT_CLANG; # define __ifunc_hidden(type_name, name, expr, arg, init) \ __ifunc (type_name, name, expr, arg, init)