https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26374
--- Comment #14 from beebe at math dot utah.edu --- >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26374 That is a really old one, from early 2006; I would have hoped that it had long since been repaired in gcc. However, I just checked my VM for CentOS 7 on PowerPC, and found this: % cat foo.c static const double x = 1.0L / 42 ; % /usr/bin/gcc -c foo.c foo.c:1:1: error: initializer element is not computable at load time static const double x = 1.0L / 42 ; That is gcc-4.8.5 (20150623 (Red Hat 4.8.5-44)). I recently built gcc-8.5.0 on that system, and it raises the same error. Changing 42 to 42.0L to have a pure long-double expression does not eliminate the error with either compiler. The assignment is perfectly legal in all ISO Standards for C from 1989 to date, and the expression must be evaluated to IEEE 754 requirements by the compiler, producing a correctly rounded result. That latter would not be possible if it were expressed as a fractional value, because the C Standards do not require correct conversion of decimal fractions to binary fractions. The build of gcc-8.5.0 took five days on this qemu-emulated CPU, so it really is not practical for me to try the test file with gcc-9 through gcc-12 versions. I needed 8.5.0 to be able to build TeX Live 2022: see http://www.math.utah.edu/pub/texlive-utah/#centos-7-ppc64be for my report (and many others elsewhere in that Web page). ------------------------------------------------------------------------------- - Nelson H. F. Beebe Tel: +1 801 581 5254 - - University of Utah FAX: +1 801 581 4148 - - Department of Mathematics, 110 LCB Internet e-mail: be...@math.utah.edu - - 155 S 1400 E RM 233 be...@acm.org be...@computer.org - - Salt Lake City, UT 84112-0090, USA URL: http://www.math.utah.edu/~beebe/ - -------------------------------------------------------------------------------
