Floating point constants default to double precision and can be made single precision with a 'f' or 'F' suffix or long double precision with 'l' or 'L'.
It turns out indent only knows about 'u'/'U' and 'l'/'L' suffixes and will add a space between floating point constants and the suffix if 'f' or 'F' is used which results in code that won't compile. This particular problem broke the build of Mesa master on at least OpenBSD/FreeBSD/Mac OS X: https://bugs.freedesktop.org/show_bug.cgi?id=88335 Index: lexi.c =================================================================== RCS file: /cvs/src/usr.bin/indent/lexi.c,v retrieving revision 1.17 diff -u -p -r1.17 lexi.c --- lexi.c 11 Oct 2014 03:05:48 -0000 1.17 +++ lexi.c 16 Jan 2015 13:07:26 -0000 @@ -202,6 +202,12 @@ lexi(void) } break; } + if (!(seensfx & 1) && + (*buf_ptr == 'F' || *buf_ptr == 'f')) { + CHECK_SIZE_TOKEN; + *e_token++ = *buf_ptr++; + seensfx |= 1; + } } else while (chartype[(int)*buf_ptr] == alphanum) { /* copy it over */
