Strange problem with newlib strstr function and rtems 4.10 on coldfire

Paul Whitfield paulw at
Wed Apr 20 01:13:39 UTC 2011

On 18/04/2011 5:21 PM, Ralf Corsepius wrote:
> On 04/18/2011 10:16 AM, Paul Whitfield wrote:
>> On 18/04/2011 2:53 PM, Ralf Corsepius wrote:
>>> On 04/18/2011 06:28 AM, Paul Whitfield wrote:
>>>> On 18/04/2011 10:51 AM, Paul Whitfield wrote:
>>>> I have checked the newlib CVS and the version of strstr.c and
>>>> str-two-way.h in RTEMS4-10 are update to date with the most current
>>>> version.
>>>> One last note: Recompiling the strstr.c / str-two-way.h code newlib
>>>> code
>>>> on the PC the code works correctly with the optimised version.
>>> Are you trying to express you can reproduce your issue on PC?
>>> I just tried, but I can't reproduce it.
>>> Ralf
>> Sorry I was unclear. No I can NOT reproduce the problem on the PC.
> OK.
>> I have done some more investigation ...
>> I did NOT build gcc / newlib from source.
>> I am using the pre-compiled version from
>> and it is behaving the same way as the code I am compiling here.
>> I did some searching and found a similar symptom to what I have
>> been seeing.
>> It seems to be the strstr code is breaking because it expects the value
>> of the macro SIZE_MAX to be the maximum value of a size_t variable
>> however it appears that using the standard RTEMS include files,
>> SIZE_MAX is actually 32.
> You are right on the spot. SIZE_MAX is wrong.
>> Is something broken about how newlib has been built?
> Not quite.
> It's a bug in our stdint.h which gets exposed when using newlib with
> gcc-4.4.x. It does not get exposed with newer gccs (e.g. rtems4.11),
> because the preprocessor takes a different path, then.
> I'll further investigate and try to come up with a fix. - I recall us
> having had this issue before and thought I had fixed it. Apparently not ;)
> Ralf

Hi Ralf / All,

Would it be helpful if I raised a bug report for this ?


Paul Whitfield
Software Engineer

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Perth WA 6017
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