Last update March 25, 2011

Error Messages /
Runtime Errors

Table of contents of this page

Access Violation

Format String Mismatch with Arguments for printf

Uninitialized Object

Error: Array Bounds Error

Error: not enough data in stream

Case Study

Error: conversion

An exception was thrown while finalizing an instance of class

Access Violation

Format String Mismatch with Arguments for printf

Problem code, from ( NG:D/26447):

import std.compiler;
int main()
{
   // this gets an Access Violation
   printf("%s\n", std.compiler.name);

   return 0;
}

Change

printf("%s", s);

printf("%.*s", s);

Uninitialized Object

Problem code:

void main()
{  
   Object o;
   printf("%.*s", o.toString);
}

Change

Object o;

Object o = new Object();

Error: Array Bounds Error

Problem code:

void main()
{  
   int[] a;
   a[0] = 0;		
}

If it's compiled in release (dmd arrays.d -release), it the error is expressed as "Error: Access Violation".

Add this line

a.length = 1;

before

a[0] = 0;

void main()
{  
   int[] a;
   a.length = 1;
   a[0] = 0;		
}

Error: not enough data in stream

It's generated by std.stream ( NG:digitalmars.D/18709).

Case Study

The problem was caused by the server's software where I was getting the data from, which, by the way, is written in Java. I was trying to acquire data from that server using D. D acted accordingly, so the problem was java memory cap setting. The cap was set for 128MB of memory. The amount of XML that I was downloading exceeded that amount and I kept getting that "Error: not enough data in stream." After raising the memory cap to 1024MB, the problem went away.

Apparently, d was reading socket.datastream from the server ok, but when the amount of data from the server exceeded 128MB, the server stopped sending data and D aborted with "Error: not enough data in stream." This confused me a bit and I thought that it was something on my side. (Perhaps we should change that error.) But, this only meant that no data at all and the server closed the socket connection. It didn't even send any http headers or anything. Weird. It just returned a null string.

Adapted from NG:digitalmars.D/18731

Error: conversion

It's generated by std.conv ( NG:digitalmars.D.learn/47).

An exception was thrown while finalizing an instance of class

An exception is being thrown from the destructor of the class.

Error Messages / Runtime Errors