8 Sep 2003 crhodes   » (Master)


Bugs bugs bugs... some of which were nastily difficult to track down. Particular embarrassments:

  • (ash (1- (ash 1 32)) -40) no longer returns 1;
  • (round 1.3) no longer trashes the stack;
  • (truncate 291351647815394962053040658028983955 10000000000000000000000000) now returns 29135164781, not 29135164782.

How does one find how to fix these bugs? Sometimes by observing strangenesses, and applying binary search to the system until the problem's origin is sufficiently well localized. Sometimes, though, just by thinking very hard...

It is at times like this, though, that the benefits of a test suite are very obvious — if only because some fixes can be deferred on some architectures, while remaining secure in the knowledge that the issue won't be lost.

Latest blog entries     Older blog entries

New Advogato Features

New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.

Keep up with the latest Advogato features by reading the Advogato status blog.

If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!