🚀 go-pugleaf

In article <1992Aug13.232325.930@colorado.edu> drew@ophelia.cs.colorado.edu (Drew Eckhardt) writes:

|   >-Is there a way to detect this kind of self-modification
|   > either at runtime (say, with a small TSR debugger-like program) or 
|   > scanning the assembly-code sources.
|
|   Scanning the assembly code should do it.
|

That is not completely true.  A program that dynamically creates and
executes code can create and execute code that modifies itself within
the prefetch buffer, even though the original did not.

Both the Gambit and MIT Scheme compilers (and others as well) have had
to deal with this problem in the past, and in no case was the code
apparent from looking at the sources, since it was dynamically created
and executed code.