Recently, after being very tired, I wrote the following code:
GLfloat* array = new GLfloat(x * y * z);
Which, of course should have been:
GLfloat* array = new GLfloat[x * y * z];
(Note the square brackets as opposed to the parenthesis.)
As far as I know, the first form is not valid, but g++ compiled it. Sure, it spat out a completely incomprehensible segfault, but it compiled.
Why?
GLfloat* array = new GLfloat(x * y * z);
Creates a pointer called array to an object of type GLfloat with a value of x * y * z.