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Re: [PATCH] malloc: Fix MALLOC_DEBUG -Wundef warning
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: Will Newton <will dot newton at linaro dot org>, libc-alpha <libc-alpha at sourceware dot org>
- Date: Thu, 10 Apr 2014 19:33:31 -0400
- Subject: Re: [PATCH] malloc: Fix MALLOC_DEBUG -Wundef warning
- Authentication-results: sourceware.org; auth=none
- References: <1396278243-24455-1-git-send-email-will dot newton at linaro dot org> <CANu=DmiwcuAQKSgu40e7aAmaGgi9peHDK=9Wr2=EpMFFYB2xwQ at mail dot gmail dot com>
On 04/08/2014 08:34 AM, Will Newton wrote:
> On 31 March 2014 16:04, Will Newton <will.newton@linaro.org> wrote:
>> MALLOC_DEBUG is set optionally on the command line. Default the value
>> to zero if it is not set on the command line, and test its value
>> with #if rather than #ifdef. Verified the code is identical before
>> and after this change apart from line numbers.
>>
>> ChangeLog:
>>
>> 2014-03-31 Will Newton <will.newton@linaro.org>
>>
>> * malloc/malloc.c [!MALLOC_DEBUG]: #define MALLOC_DEBUG
>> to zero if it is not defined elsewhere. (mtrim): Test
>> the value of MALLOC_DEBUG with #if rather than #ifdef.
>> ---
>> malloc/malloc.c | 6 +++++-
>> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> Ping?
>
>> diff --git a/malloc/malloc.c b/malloc/malloc.c
>> index 9a45707..1120d4d 100644
>> --- a/malloc/malloc.c
>> +++ b/malloc/malloc.c
>> @@ -270,6 +270,10 @@
>> or other mallocs available that do this.
>> */
>>
>> +#ifndef MALLOC_DEBUG
>> +#define MALLOC_DEBUG 0
>> +#endif
>> +
>> #ifdef NDEBUG
>> # define assert(expr) ((void) 0)
>> #else
>> @@ -4477,7 +4481,7 @@ mtrim (mstate av, size_t pad)
>>
>> if (size > psm1)
>> {
>> -#ifdef MALLOC_DEBUG
>> +#if MALLOC_DEBUG
>> /* When debugging we simulate destroying the memory
>> content. */
>> memset (paligned_mem, 0x89, size & ~psm1);
Looks good to me.
Cheers,
Carlos.