The attached program demonstrates an issue with Gnu Pascal, version 20030507. The program cannot be compiled because of a non-existent "threat" on the global loop variable used in a subroutine. The main program has a loop which uses the variable, but calls no subroutines within the loop, and therefore is not vulnerable to any threat from use of that variable by other subroutines. Attempting to compile this program results in the message gpc -o forwarning forwarning.pas forwarning.pas: In main program: forwarning.pas:13: error: `for' loop counter is threatened in a subroutine This usage is present in Donald E. Knuth's WEB and TeX programs, and requires changing these loops to use unique loop variables. If there is a way to disable this check, I cannot find it in the documentation. gpc --version results in: Reading specs from /Developer/Pascal/gpc33d6/lib/gcc-lib/powerpc-apple-darwin/3.3/specs Configured with: ../gpc-3.3d6/configure --enable-languages=pascal,c --enable-threads=posix --prefix=/Developer/Pascal/gpc33d6 --target=powerpc-apple-darwin Thread model: posix gpc version 20030507, based on gcc-3.3 Thank you for your help. --Joe Oswald