Re: BUG #4190: sparc64 test suite fails

"Tom Lane" <tgl@sss.pgh.pa.us> writes:

> IMHO, what you have here is a compiler bug, or at least the gcc boys are
> going to need to provide a damn good excuse why it's not.

You don't, perhaps have any of -ffast-math or these two suboptions which
-ffast-math enables turned on?

`-funsafe-math-optimizations'
     Allow optimizations for floating-point arithmetic that (a) assume
     that arguments and results are valid and (b) may violate IEEE or
     ANSI standards.  When used at link-time, it may include libraries
     or startup files that change the default FPU control word or other
     similar optimizations.

     This option should never be turned on by any `-O' option since it
     can result in incorrect output for programs which depend on an
     exact implementation of IEEE or ISO rules/specifications for math
     functions.

     The default is `-fno-unsafe-math-optimizations'.

`-fno-trapping-math'
     Compile code assuming that floating-point operations cannot
     generate user-visible traps.  These traps include division by
     zero, overflow, underflow, inexact result and invalid operation.
     This option implies `-fno-signaling-nans'.  Setting this option
     may allow faster code if one relies on "non-stop" IEEE arithmetic,
     for example.

     This option should never be turned on by any `-O' option since it
     can result in incorrect output for programs which depend on an
     exact implementation of IEEE or ISO rules/specifications for math
     functions.

     The default is `-ftrapping-math'.

--
  Gregory Stark
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