Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
7 years, 8 months ago.
Compiler Bug?
I have a struct of 4 integers like this:
Example
#include "mbed.h"
struct ints {
int i0, i1, i2, i3;
};
struct ints i[0xf4]; //0xf3 works, 0xf4 doesn't
int main(int argc, char **argv) {
i[0].i0 = 1; //if i don't initialize some data, it also compiles fine
return 0;
}
Now the sice of the struct is 16 bytes, since one integer has 32 bits.
When I create an array of this struct, I can't have it larger than about 0xa0 items, which is 2kByte of memory (Otherwise the compiler tells me, that I am out of memory). The Project overview tells me, that I have about 6.5kByte of memory still available, when I remove that array.
I'm compiling for the LPC11u24.
The Compiler error code it gives: L6407E
My question is: Is this a bug in the compiler (I doubt it). Or is there some other hindrance like bank switching, which the compiler doesn't implement?
1 Answer
7 years, 8 months ago.
Manuel,
I have tried to replicate your issue, however, i have successfully built and compiled using the LPC11u24 using 3.8kb/8kb, have you tried recreating the program? Have you tried placing data in 'const' in flash rather than RAM? Can you upload your exact problem and code to test.
Regards,
-Andrea
This is the exact problem code. I first encountered this in a large project and tested it with this code in a completely new project. This is also why the values have changed from A0H to F3H.
posted by 10 Aug 2016
What's the target? A simple app to reproduce the problem - so we cn just import and see ?
posted by Martin Kojtal 08 Aug 2016