linux-kernel - Re: [PATCH] lpfc: use %zd format string for size

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Message-ID: <05a8b6f6-b21a-0d77-ba52-23b568967584@synopsys.com>
Date:   Fri, 28 Oct 2016 14:58:33 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Arnd Bergmann <arnd@...db.de>
CC:     arcml <linux-snps-arc@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Claudiu Zissulescu <Claudiu.Zissulescu@...opsys.com>
Subject: Re: [PATCH] lpfc: use %zd format string for size_t

On 10/28/2016 02:52 PM, Vineet Gupta wrote:
> On 10/28/2016 02:44 PM, Vineet Gupta wrote:
>> This is configuration specific, and something caused your compiler to
>>> be built assuming that size_t is unsigned long, while the kernel
>>> headers are assuming it should be unsigned int.
> 
> So yes this seems to be target specific gcc thing
> 
> for ARC 4.8
> 
> #define PTRDIFF_TYPE "int"
> 
> ARM
> 
> #ifndef PTRDIFF_TYPE
> #define PTRDIFF_TYPE (TARGET_AAPCS_BASED ? "int" : "long int")
> #endif
> 
> ARC gcc 6.2
> 
> #undef PTRDIFF_TYPE
> #define PTRDIFF_TYPE "long int"

Actually we need to adjust SIZE_TYPE (unsigned int) and PTRDIFF_TYPE (int) in the
gcc 6.x to fix this issue. And that is exactly what ARC gcc 4.8 have.