Problem with STMicroelectronics GNU GCC compiler

[Cengizhan SAY?ILI]

Posted on March 23, 2017 at 09:31

Problem with STMicroelectronics GNU GCC compiler

Below partial code of our project.

typedef struct

{

    U_16 no;

    U_8 duration;

    BuzzerSounds buzzerSong;

    priorityLevels priority;

    TBOOL buzzerPeriodic;

    TBOOL isPlayed;

}event;

typedef struct

{

    U_32 canID;

    U_64 canData;

}canMSG;

typedef enum

{

    PRIORITY_BLOCKER = 0,

    PRIORITY_HIGH,

    PRIORITY_MID,

    PRIORITY_LOW,

    PRIORITY_TRIVIAL

}priorityLevels;

event eventRecord = {0,0,B_IDLE,255,0,0};

//This red part successfully compiled but not works.

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04) + (971uLL << 8) + (((U_64)eventRecord.no) << 32) + (((U_64)eventRecord.duration) << 48) + (((U_64)eventRecord.priority) << 56);

can0SendMessage(msg);

//When i changed red part of code like this, it works.

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04);

msg.canData += (971uLL << 8);

msg.canData += (((U_64)eventRecord.no) << 32);

msg.canData += (((U_64)eventRecord.duration) << 48);

msg.canData += (((U_64)eventRecord.priority) << 56);

can0SendMessage(msg);

//Also

when i changed red part of code like this, it works again

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04) + (971uLL << 8) + (((U_64)eventRecord.no) << 32) + (((U_64)eventRecord.duration) << 48);

can0SendMessage(msg);

//I think problem is enum part of code.

(((U_64)eventRecord.priority) << 56)

I compile this project with Hightec GCC 4.6.3 toolchain, there is no problem. Red part works normally.

[Erwan YVIN]

Posted on April 04, 2017 at 11:08

Hello Cenzighan ,

The problem has been submitted in your tracker.

In some strange cases in the free gcc compiler  (optimization issue)

Do not hesitate to force -O0 optimization in some parts of sensitive code.

               Best regards

                            Erwan

[Cengizhan SAY?ILI]

Posted on April 05, 2017 at 10:55

Hello Erwan,

I always use -O0 . I think problem is not optimization.

Thanks.

[Erwan YVIN]

Posted on October 12, 2017 at 15:55

Hello ,

after checking the 64 bits issue ,

No problem is noticed

(Cf Screenshot)

typedef struct
{
uint16_t no;
uint8_t duration;
uint16_t buzzerSong;
uint16_t priority;
}event;
typedef struct
{
uint32_t canID;
uint64_t canData;
}canMSG;
typedef enum
{
PRIORITY_BLOCKER = 0,
PRIORITY_HIGH,
PRIORITY_MID,
PRIORITY_LOW,
PRIORITY_TRIVIAL
}priorityLevels;
event eventRecord = {0,0,1,255,0,0};
canMSG msg;
....
uint32_t no=1;
uint32_t duration = 1;
uint32_t priority = 1;
msg.canData = (0x04) + (971uLL << 8) + (((uint64_t)no) << 32) + (((uint64_t)duration) << 48) + (((uint64_t)priority) << 56);
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Best regards

Erwan