Wierd bug when using format()

Squirrel Code
1

Hi, I have found a pretty wierd bug.

Consider the following code:

imp.configure("Wierd",[],[]); server.log(format("%s","s"));

The result is very surprising, it prints the string
sTRAP in the log.

I have no clue where the “TRAP” comes from. But I can only make it appear when using the format() function, so I guess theres a problem with the implementation.

Another example:
imp.configure("Wierd",[],[]); server.log(format("%s","s")); server.log(format("%s","ss"));
Prints
s ssTRAP

2

This is due to format expecting null terminated strings, but constant strings on the imp aren’t null terminated (they can often include nulls!).

TRAP is actually a section separator in the compiled squirrel code (PART).

This is fixed in later versions, but was quite confusing. Workaround is to add “\x00” at the end of your constant string.

3

Thank you Hugo!