Re: Memory allocation failed. Why?

[Basile B. via Digitalmars-d-learn]

On Sunday, 20 November 2016 at 17:47:50 UTC, MGW wrote:
import core.sys.windows.windows: MessageBoxA;
void test() {
        for(int i; i != 10; i++) {
                ubyte[] buf;
                for(int j; j != 100000000; j++) buf ~= 65;
                MessageBoxA(null, "--on for--".ptr, "".ptr, 0);
                // delete buf; // if ON - then memory delete in step
        }
        MessageBoxA(null, "--off for--".ptr, "".ptr, 0);
}

void main() {
        test();
        MessageBoxA(null, "--The end--".ptr, "".ptr, 0);
}

----------------
core.exception.OutOfMemoryError@src\core\exception.d(693): 
Memory allocation failed
----------------

Simple program and error. Why?  Windows 7 (32) dmd 2.072.0

For me there's no exception. Maybe the GC is poluted. Try to add 
this after each iteration in the first test loop:

        import core.memory: GC;
        GC.collect();

Also note that the text you pas in the message box should be null 
terminated, eg:

        MessageBoxA(null, "--The end--\0".ptr, "".ptr, 0);