TMS320C6748: There happens the failure of Vector.push_back.

Hi,

Sorry for the delay, this is being looked at.

Best Regards,
Yordan

Hi Yordan:

Ok, is there any update, pls. kindly let me know. Since customer is pushing me.

Dear Rahul：

there is something wrong with the vector using with DSP/BIOS,  you can get the detailed infomation from the attachment "vector-use.cpp"

       vector-use.cpp

Dear Rahul：

there is something wrong with the vector using with DSP/BIOS,  you can get the detailed infomation from the attachment "vector-use.cpp"

       1488.vector-use.cpp

Hi Rahul：

I am not sure whether you have get the file named vector-use.cpp,  if not, pls. let me know.

line 88 in this file, It is one example to show the using vector without DSP/BIOS,  it works well,

but in line 136, it is another vector example with DSP/BIOS

In the function showSomething（line 114）which was called by TaskTest, you can see some code as shown below:

line 117-121:

    for(int i=0;i<10;i++){
        person.Setage(i);
        person.agegroup_.push_back(person.age_); // standard C++ STL vector, not ok
        personStack.push(i); //personStack is a template defined by myself, result is ok
    }

agegroup_ is a standard vector member of class person,  it dose not work well in DSP/BIOS,

the value of agegroup_.capacity() and agegroup_.size() is 0 after the push_back operation, I do not know why?

but personStack works well whick is a template(stack) defined by myself.

thanks a lot

best regards!

We have received the vector.cpp file that you posted. I have also looped in my colleagues in the DSPBIOS and compiler team to comment on if they see any issues with missing c++ template based code with DSP BIOS and will get back to you if we can provide additional guidance.

Regards,

Rahul

Hi Luck Wu,

I am trying to reproduce your problem, but there are some missing header files from your project that are included by vector.cpp.  Can you please attach the missing files?

Best regards,

Janet

Hi Janet:

The attachment file include two projects:

the name of one project is  CPlusTest, DSP/BIOS is not used

the name of another porject is CPLUSTest1,  DSP/BIOS is used

I get the result throuth debug online using SEED-XDS560v2, and the operate enviroment are as shown below:

compiler： TIC6000 V7.4.4

CPU: TMS320C6748

Tool：CCS5.5

Dsp/bios: 5.4.2

File format: COFF

external oscillator  24M

pll and psc use default value

Best Regards!

vector-test-project.rar

Hi User,

Thanks for the project files.  I was able to reproduce the problem, and I think I can get it to work by adding the following lines to your .tcf file:

/*
 * Enable heaps in IRAM and define label SEG0 for heap usage.
 */
bios.enableMemoryHeaps(prog);
 
bios.IRAM.createHeap      = true;
bios.IRAM.enableHeapLabel = true;
bios.IRAM["heapLabel"]    = prog.extern("SEG0");
bios.IRAM.heapSize        = 0x2000;
bios.MEM.BIOSOBJSEG = prog.get("IRAM");
bios.MEM.MALLOCSEG = prog.get("IRAM");

Can you try this and see if it fixes your problem?

Best regards,

Janet