Issues with shadowing/scopes and variable with same name.

[wrightwriter]

Issue

I can't reproduce this reliably! Have had this happen at least 4-5 times now.
It usually does not happen.

void main(){
  // code
  float t = 0.;
  // code
  { // some inner scope
    // code
    vec3 t = vec3(0);
    // code
    // usually fails if i use t here.
  }
}

Last time this happened, the shader was compiling, but producing wrong result.

Preventing this

I have to actively avoid shadowing variables with same name in inner scopes.