Created attachment 1937284 [details]
gt-c99.patch

I started porting the package to C99, but there are too many issues.

With the attached patch, the next slew of issues are:

dim.c:323: defaulting to int
dim.c:967: type defaults to int
dim.c:983: type defaults to int
dim.c:983: type defaults to int
dim.c:1014: type defaults to int
dim.c:951: type defaults to int
dim.c:853: type defaults to int
dim.c:951: type defaults to int
dim.c:678: type defaults to int
dim.c:678: type defaults to int
dim.c:669: type defaults to int
dim.c:1028: type defaults to int
dim.c:1044: type defaults to int
dim.c:1056: type defaults to int
dim.c:1056: type defaults to int
dim.c:1056: type defaults to int
dim.c:1028: type defaults to int
dim.c:1056: type defaults to int
dim.c:1044: type defaults to int
dim.c:1056: type defaults to int
dim.c:1044: type defaults to int
dim.c:1044: type defaults to int
dim.c:1064: type defaults to int
dim.c:669: type defaults to int
dim.c:662: type defaults to int
dim.c:397: type defaults to int
dim.c:422: type defaults to int
dim.c:422: type defaults to int
dim.c:422: type defaults to int
dim.c:397: type defaults to int
dim.c:352: implicit function declaration: initfuncs
dim.c:397: type defaults to int
dim.c:329: defaulting to int
dim.c:329: type defaults to int
dim.c:662: type defaults to int
dim.c:439: type defaults to int
dim.c:439: type defaults to int
dim.c:547: type defaults to int
dim.c:547: type defaults to int
dim.c:662: type defaults to int
dim.c:439: type defaults to int
dim.c:547: type defaults to int
dim.c:456: type defaults to int
dim.c:456: type defaults to int
dim.c:456: type defaults to int
dim.c:1103: defaulting to int

And I suspect it goes on after that.