On 6/3/2015 11:39, Thomas Quinot wrote: > Patch looks good to me. The story with floats is that on FreeBSD, the > i386 FPU is set to 53-bit floats, but the GNAT runtime library always > issues a "finit" instruction to reset it to full precision, so we need > to reset TARGET_96_ROUND_53_LONG_DOUBLE to 0.
I have this fixed in an interesting way on gnat-aux. I found that setting TARGET_96_ROUND_53_LONG_DOUBLE affects other front ends, so you have to choose which one you want to be correct, GNAT or the C (or whatever, can't remember which ones were affected now) My solution was to create two common backends, one for gnat and one for the others. An example of the main patch is here: https://raw.githubusercontent.com/jrmarino/draco/master/misc/flux5/patch-gcc_Makefile.in (note the new s-modes-ada target) and then this patch is needed: https://raw.githubusercontent.com/jrmarino/draco/master/misc/flux5/patch-gcc_ada_gcc-interface_Make-lang.in With those modifications, all the ACATS tests pass on i386 and the other front ends work as expected. I don't know if such a modification would ever be considered for GCC but I've been running it for a couple of years with no reported problems. John
