From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtps.tip.net.au (chilli.pcug.org.au [203.10.76.44]) by bilbo.ozlabs.org (Postfix) with ESMTP id 79A56B6EDE for ; Tue, 11 Aug 2009 13:15:03 +1000 (EST) Date: Tue, 11 Aug 2009 13:14:55 +1000 From: Stephen Rothwell To: Benjamin Herrenschmidt Subject: [PATCH] powerpc: use consistent types in mktree Message-Id: <20090811131455.eceea05e.sfr@canb.auug.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Cc: ppc-dev List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , gcc v4.4 currently produces this build warning: arch/powerpc/boot/mktree.c: In function 'main': arch/powerpc/boot/mktree.c:104: warning: dereferencing type-punned pointer will break strict-aliasing rules tmpbuf is only used as an array of unsigned ints, so declare it that way. Signed-off-by: Stephen Rothwell --- arch/powerpc/boot/mktree.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/boot/mktree.c b/arch/powerpc/boot/mktree.c index c2baae0..e2ae243 100644 --- a/arch/powerpc/boot/mktree.c +++ b/arch/powerpc/boot/mktree.c @@ -36,7 +36,7 @@ typedef struct boot_block { } boot_block_t; #define IMGBLK 512 -char tmpbuf[IMGBLK]; +unsigned int tmpbuf[IMGBLK / sizeof(unsigned int)]; int main(int argc, char *argv[]) { @@ -95,13 +95,13 @@ int main(int argc, char *argv[]) /* Assume zImage is an ELF file, and skip the 64K header. */ - if (read(in_fd, tmpbuf, IMGBLK) != IMGBLK) { + if (read(in_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) { fprintf(stderr, "%s is too small to be an ELF image\n", argv[1]); exit(4); } - if ((*(unsigned int *)tmpbuf) != htonl(0x7f454c46)) { + if (tmpbuf[0] != htonl(0x7f454c46)) { fprintf(stderr, "%s is not an ELF image\n", argv[1]); exit(4); } @@ -121,11 +121,11 @@ int main(int argc, char *argv[]) } while (nblks-- > 0) { - if (read(in_fd, tmpbuf, IMGBLK) < 0) { + if (read(in_fd, tmpbuf, sizeof(tmpbuf)) < 0) { perror("zImage read"); exit(5); } - cp = (unsigned int *)tmpbuf; + cp = tmpbuf; for (i = 0; i < sizeof(tmpbuf) / sizeof(unsigned int); i++) cksum += *cp++; if (write(out_fd, tmpbuf, sizeof(tmpbuf)) != sizeof(tmpbuf)) { -- 1.6.3.3 -- Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/