[fpc-devel] Random compiler errors

[Adriaan van Os]

I maintain a large 600.000 FreePascal project that compiles for Mac OS X. It mixes MacPascal and 
Delphi compiler modes. Unfortunately the compiler is now producing random error messages, that 
disappear on a clean rebuild. The error messages are not clearly reproduceable. Sometimes, 
everything is OK, sometimes the incorrect error messages are there.

I suspect corrupted .ppu files, I there a way to use a tool (like ppudump) or a specially built 
compiler to investigate this problem systematically, to get an idea of what is wrong ? I do builds 
through a Makefile. I could image always adding a ppudump to the builds and then looking at the 
output when random error messages popup, comparing the output to previous builds. Something like that.

An automatic "ppu sanity mode" inside the compiler would even be better.

Regards,

Adriaan van Os