[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 Walter Bright bugzi...@digitalmars.com changed: What|Removed |Added Status|NEW |RESOLVED CC||bugzi...@digitalmars.com Resolution|--- |WONTFIX --- Comment #7 from Walter Bright bugzi...@digitalmars.com --- (In reply to Temtaime from comment #4) I'm using MSVC 2013 with /O2 /GL /Gw /fp:fast. Can /fp:fast have an effect on DMD ? I'll with /GL and without /fp:fast, okay. According to Microsoft documentation, /fp:fast will: Creates the fastest code in most cases by relaxing the rules for optimizing floating-point operations. This enables the compiler to optimize floating-point code for speed at the expense of accuracy and correctness. -- https://msdn.microsoft.com/en-us/library/e7s85ffb.aspx I interpret that as meaning insert random bugs in floating point code. DMD is not designed to work with that, and was certainly never tested with that. I'm going to mark this as WONTFIX. The only supported build options are the ones in the VS solution included with DMD. --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 Martin Nowak c...@dawg.eu changed: What|Removed |Added CC||c...@dawg.eu --- Comment #6 from Martin Nowak c...@dawg.eu --- Any insight on why LTO mess this up? --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 --- Comment #5 from Vladimir Panteleev thecybersha...@gmail.com --- The VS solution included with DMD has a Release target, any reason you're not using that? --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 --- Comment #4 from Temtaime temta...@gmail.com --- I'm using MSVC 2013 with /O2 /GL /Gw /fp:fast. Can /fp:fast have an effect on DMD ? I'll with /GL and without /fp:fast, okay. --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 Vladimir Panteleev thecybersha...@gmail.com changed: What|Removed |Added CC||thecybersha...@gmail.com --- Comment #1 from Vladimir Panteleev thecybersha...@gmail.com --- I can't reproduce this... --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 --- Comment #2 from Temtaime temta...@gmail.com --- The bug exists only on Windows when dmd is built with /GL, /LTCG compiler optimization options. 2.066 compiles and runs successfully with these options. --
[Issue 14139] GIT HEAD : PI now has wrong value
https://issues.dlang.org/show_bug.cgi?id=14139 Orvid King blah38...@gmail.com changed: What|Removed |Added CC||blah38...@gmail.com --- Comment #3 from Orvid King blah38...@gmail.com --- Which version of MSVC? I use a 64-bit DMD compiled by MSVC 2010 with link-time code gen (/LTCG) and whole program optimization (/GL), and have no issues here. Is it possible that you've changed the floating point model in your build to something other than precise (/fp:precise)? --
