From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <fw@sourceware.org>
Received: by sourceware.org (Postfix, from userid 2178)
	id D4BA13858D35; Wed,  4 Jan 2023 13:37:18 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D4BA13858D35
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1672839438;
	bh=8HbvU41cU9vByK1CgzIWYRYOPZSGjXnz+rFKMuRqCBE=;
	h=From:To:Subject:Date:From;
	b=vLIBTGoYcpTFvwzSSHLY5wvb1JkgFGo9LhfNcyel9BqHjkpnQoyMy2uG1Xw1Rl8Pu
	 ldyoj/Z5vTf2kvZWn5i+MOeUh3uSiN/cuA1McC8ukU4ihd9pGUEMtwk4lQ5d8bA0S2
	 DL1aisI4vI7kQiCZ6/bORlk4i4Pd/jkVzxnpxxDY=
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="utf-8"
From: Florian Weimer <fw@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc r11-10449] libsanitizer: Avoid implicit function declaration in
 configure test
X-Act-Checkin: gcc
X-Git-Author: Florian Weimer <fweimer@redhat.com>
X-Git-Refname: refs/heads/releases/gcc-11
X-Git-Oldrev: 9113322659e66bbb1123e01d636f3340d90a1a1f
X-Git-Newrev: d9490634ae2a4aa8a744f31113bbf3757c950746
Message-Id: <20230104133718.D4BA13858D35@sourceware.org>
Date: Wed,  4 Jan 2023 13:37:18 +0000 (GMT)
List-Id: <gcc-cvs.sourceware.org>

https://gcc.gnu.org/g:d9490634ae2a4aa8a744f31113bbf3757c950746

commit r11-10449-gd9490634ae2a4aa8a744f31113bbf3757c950746
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Jan 4 11:13:17 2023 +0100

    libsanitizer: Avoid implicit function declaration in configure test
    
    libsanitizer/
    
            * configure.ac (sanitizer_supported): Include <unistd.h> for
            syscall prototype.
            * configure: Regenerate.
    
    (cherry picked from commit 6be2672e4ee41c566a9e072088cccca263bab5f7)

Diff:
---
 libsanitizer/configure    | 1 +
 libsanitizer/configure.ac | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/libsanitizer/configure b/libsanitizer/configure
index 1d9ae59be67..8bdde896fe7 100755
--- a/libsanitizer/configure
+++ b/libsanitizer/configure
@@ -16035,6 +16035,7 @@ case "$target" in
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/syscall.h>
+#include <unistd.h>
 int
 main ()
 {
diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index 13cd302030d..ac24b4b593b 100644
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -161,7 +161,8 @@ case "$target" in
   *-*-linux*)
     # Some old Linux distributions miss required syscalls.
     sanitizer_supported=no
-    AC_TRY_COMPILE([#include <sys/syscall.h>],[
+    AC_TRY_COMPILE([#include <sys/syscall.h>
+#include <unistd.h>],[
       syscall (__NR_gettid);
       syscall (__NR_futex);
       syscall (__NR_exit_group);