From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 46155 invoked by alias); 16 Nov 2019 14:41:46 -0000 Mailing-List: contact glibc-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: , Sender: glibc-cvs-owner@sourceware.org List-Subscribe: Received: (qmail 46098 invoked by uid 9299); 16 Nov 2019 14:41:46 -0000 Date: Sat, 16 Nov 2019 14:41:00 -0000 Message-ID: <20191116144146.46097.qmail@sourceware.org> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Florian Weimer To: glibc-cvs@sourceware.org Subject: [glibc] hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097] X-Act-Checkin: glibc X-Git-Author: Florian Weimer X-Git-Refname: refs/heads/master X-Git-Oldrev: 9e3e27c4e32c02e93d9779e41356adfb357957e3 X-Git-Newrev: 84df7a4637be8ecb545df3501cc724f3a4d53c46 X-SW-Source: 2019-q4/txt/msg00358.txt.bz2 https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84df7a4637be8ecb545df3501cc724f3a4d53c46 commit 84df7a4637be8ecb545df3501cc724f3a4d53c46 Author: Florian Weimer Date: Fri Nov 15 18:36:58 2019 +0100 hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097] The trampoline code should really be rewritten in assembler because this is all very undefined at the C level. Change-Id: Ided58244ca0ee48892519faac5ac222a4e02dec4 Diff: --- sysdeps/mach/hurd/i386/init-first.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c index f1f1c40..5c21ebb 100644 --- a/sysdeps/mach/hurd/i386/init-first.c +++ b/sysdeps/mach/hurd/i386/init-first.c @@ -30,6 +30,7 @@ #include #include +#include extern void __mach_init (void); extern void __init_misc (int, char **, char **); @@ -144,6 +145,12 @@ init1 (int argc, char *arg0, ...) static inline void init (int *data) { + /* data is the address of the argc parameter to _dl_init_first or + doinit1 in _hurd_stack_setup, so the array subscripts are + undefined. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (10, "-Warray-bounds"); + int argc = *data; char **argv = (void *) (data + 1); char **envp = &argv[argc + 1]; @@ -265,6 +272,8 @@ init (int *data) restored by function return. */ asm volatile ("# a %0 c %1" : : "a" (usercode), "c" (&init1)); } + + DIAG_POP_NEEDS_COMMENT; /* -Warray-bounds. */ } /* These bits of inline assembler used to be located inside `init'.