Getting a Segmentation fault for some reason when im not doing anything with memory

[nomacaly]

first time posting here. hello.
i have run into a strange issue when creating my pixel graphics engine,

for some strange reason I'm getting a Segmentation fault when i comment out drawFilledRect, and try to draw a character.

//Gives me a Segmentation fault (core dumped)
void draw()
{
  Color green = {0,255,0};
  Color blue  = {0,0,255};
  Color red = {255,0,0};
  Color something = {40,10,30};
 
  Vector2 pos = {0,0};
  Vector2 dim = {25,25};
 
  //drawFilledRect(pos, dim, red);
  drawCharacter(65,20,0,green);
}

but when its not commented out it works? what.

void draw()
{
  Color green = {0,255,0};
  Color blue  = {0,0,255};
  Color red = {255,0,0};
  Color something = {40,10,30};
 
  Vector2 pos = {0,0};
  Vector2 dim = {25,25};
 
  drawFilledRect(pos, dim, red);
  drawCharacter(65,20,0,green);
}

image of what i should be getting: renderer




i don't know if i am explaining this correctly since i don't even know why this is happening.

 

[nomacaly]

drawCharacter(65,20,0,green);

here's the code thats inside the drawCharacter function

void drawCharacter(int chr, int x, int y, Color c)
{
int cy;

for(int i=0; i <8; i++)
{
for(int j=0; j <8; j++)
{
if (font[chr][cy] & (1<<i))
{
drawPixel(x+i,y-j+8,c);
}
cy++;
}
cy =0;
}
}

i have a really strong feeling that this

if (font[chr][cy] & (1<<i))

is whats causing me a pain but i need it or the character wont be rendered correctly