Question

I’m having a problem initializing an array of structs in my C program. Here’s the function where it gets initialized:

void InitializeBPStructures() {
    SatCounterTable = (struct SatCounterTableEntry *)malloc(sizeof(struct SatCounterTableEntry) * Counter_Count);
}

Counter_Count is an integer global variable and SatCounterTable is declared earlier in the C source file as

static struct SatCounterTableEntry* SatCounterTable;

and if it’s relevant this is my SatCounterTable struct

struct SatCounterTableEntry {
    enum SatCounter_State Predict_State;
    md_addr_t tag;
};

md_addr_t is just a label for an unsigned int corresponding to a memory address

The problem is that when I try and compile, I get the following error

sim-safe.c:129: error: expected expression before ‘=’ token

And the array initialization in my IntitializeBPStructures() is on line 129. I’m not sure why this line is a problem. Any ideas?

EDIT:

Here’s some additional lines of code around the function

    struct SatCounterTableEntry
{
    enum SatCounter_State Predict_State;
    md_addr_t tag;
};

/* simulated registers */
static struct regs_t regs;

/* simulated memory */
static struct mem_t *mem = NULL;

/* track number of refs */
static counter_t sim_num_refs = 0;

/* maximum number of inst's to execute */
static unsigned int max_insts;

static struct SatCounterTableEntry* SatCounterTable;

void InitializeBPStructures()
{
    SatCounterTable = (struct SatCounterTableEntry *)malloc(sizeof(struct SatCounterTableEntry) * Counter_Count);
}

void BranchPredict(md_addr_t PC, md_addr_t nextPC, enum Branch_Result result)
{
    if (result == N)
        sim_num_mispred_static++;
    if (result != (myrand() % 2))
        sim_num_mispred_random++;

        sim_num_br++;

}

Answer 1

You’re missing a semicolon at line 126.

---

Edit: new idea

Do you perhaps have a #define with an extra =?

#define Counter_Count = 42; /* WRONG */
#define Counter_Count = 42  /* WRONG */
#define Counter_Count 42;   /* WRONG, but it works some time */
#define Counter_Count 42    /* CORRECT */