topic Re: Errors:range error for small data relocation in MPC5xxx

Errors:range error for small data relocation

khadgaryu — Wed, 18 Jan 2017 05:17:26 GMT

There is a struct in my [roject,like this,

typedef struct
{
unsigned char Count;
LabelMapping Mappings[];
}LabelMappings;

Code warrior 10.6 shows a error of range error for small data relocation,when i used the struct(LabelMappings, show above) in my project. There is a indefinite lengh array that support by C99 in the struct. And the code warrior supports C99. But there is a error when commpiling.

There are two necessary conditions that lead to this error.One is the flexible array in the struct,the other I define varible ina file and refer the varible in another file.But I can't edit the files in my project.
If i set the sdata and sdata2 to 0, I can compile the project successfully.But when sdata and sdata2 is 0,my project can;t run into main().My test result,if sdata = 0 and sdata2 = 0,project can run in debug mode, and can't run in noemal mode.

I updata the new attachments,it is a whole project and can be open by code warrior 10.6.

Original Attachment has been moved to: MPC5645S_TEST.rar

Re: Errors:range error for small data relocation

martin_kovar — Wed, 18 Jan 2017 12:12:33 GMT

Hello,

you have to enable C99 extension. See the picture below.

Regards,

Martin

Re: Errors:range error for small data relocation

khadgaryu — Thu, 09 Feb 2017 07:18:50 GMT

Thank you for your help.

In my project, I had set C99 enable before i wrote the question.

I think the reason is that the IDE(compiler or linker) cant support the Flexible array which define by C99. I did a test. If i define the Flexible array in the a.c file and i reference the Flexible array in the a.c too. CW10.6 will don't report the error. But if i define the Flexible array in the a.c file and i reference the Flexible array in the b.c. CW10.6 will report the error.So i guess the reason is IDE can't support the Flexible array perfectly.