why do the removal of static give ' Stack overflow' error at the beginning of my program?

Question

I use VC2010 and when i try to debug my progam with struct replacing static i get

Unhandled exception at 0x000f18e7 in ht_array.exe: 0xC00000FD: Stack overflow.

it does it at the first line of main

#define BUCKETS 64
#define B_ENTRIES 50000

void main(int argc, char **argv)
{
static fpinfo hash_table[BUCKETS][B_ENTRIES];
static tanker_record tr[100];
....

you just tried to put 3.2 MBytes at least on the stack, not a good idea, move the variable definitions outside of main. — Dampsquid, Feb 28 '12 at 14:36

score 3 · Accepted Answer · answered Feb 28 '12 at 14:36

3

Because 64 * 50000 * sizeof(fpinfo) bytes is apparently too big for your stack. With static, the variable is allocated in a different region of memory, where it does fit.

answered Feb 28 '12 at 14:36

Fred Foo

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score 2 · Answer 2 · edited May 23 '17 at 12:22

2

Removing static means hash_table is now a stack variable whose size is too big for the stack.

static variables are stored elsewhere (see this question).

edited May 23 '17 at 12:22

Community

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answered Feb 28 '12 at 14:36

hmjd

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why do the removal of static give ' Stack overflow' error at the beginning of my program?

2 Answers2