#5149: NaNs produced by sorting mutable Double vectors
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Reporter: daniel.is.fischer | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.3 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: x86 | Failure: Incorrect result at runtime
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Under some circumstances, sorting vectors introduces !NaNs into them when
compiled with optimisations. This does not happen when compiled with
-msse2 and apparently only on 32-bit systems. 7.0.2 and earlier didn't
introduce !NaNs either, and for the attached programme (requires vector
and vector-algorithms), the only difference in the assembly produced by
7.0.2 and 7.0.3 (apart from different unique names) is the presence of
some FPU-freeings in 7.0.3's which 7.0.2 didn't produce, likely caused by
the fix to #4914.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5149>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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