2007/5/26, Mark Adler <madler at alumni.caltech.edu>: > I can't duplicate that problem when I add -std=c99 to the compile > options. What were all of the options you used? None. gcc -std=c99 -c -o gzio.o gzio.c > gcc --version gcc (GCC) 4.1.2 20061115 (prerelease) (SUSE Linux) Best Martin