From the carcino.gen.nz archive. This Security note was written for the original site and is kept as published; newer systems and toolchains may behave differently.
Date: Wed, 24 Oct 2001 21:54:57 -0700 From: Austin Ensminger <> Subject: VB6 Backcolor loop causes 100% CPU usage To: [email protected] Hello, I recently found this while messing around on a free day in my computer programming class. It's a simple program that loops backcolor hex values infinitely in a simple goto loop. When executed it causes the machine to instantly jump to 100% CPU usage. This might be from the program looping the backcolors. I'm not sure though. This is what the source looks like: Private Sub Form_Load() GoTo g: g: frmMain.BackColor = &HEBBD78 frmMain.BackColor = &HFF& frmMain.BackColor = &HFFFF& frmMain.BackColor = &HFF00FF frmMain.BackColor = &HC0C0FF GoTo g: End Sub This has been tested only on Windows 2000 Professional machines. Have a good one, -- Austin Ensmingerback.zip |
So, let me sum up: if you write a program that executes an infinite loop, CPU usage goes to 100%. What a winner.
This, my friends, is why Visual Basic is a blight upon the software development community.
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