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  • #10244

Closed
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Opened Apr 05, 2015 by rwbarton@trac-rwbarton
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"memory barriers unimplemented on this architecture" on ARM pre-ARMv7

D33 broke the build on ARM pre-ARMv7, because there is no definition of store_load_barrier or load_load_barrier for those platforms. (Granted, the old fall-back behavior of doing nothing was almost certainly incorrect.)

I don't know whether we need CPU-level barriers here, or whether they are available. At a minimum, we need a compiler-level barrier. If we need a CPU-level barrier and it isn't provided by the instruction set, then I guess we should disable SMP for these platforms in mk/config.mk.in.

Trac metadata
Trac field Value
Version 7.10.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Runtime System
Test case
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CC simonmar
Operating system
Architecture

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bug ghc build failure P::normal RTS Trac import
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Reference: ghc/ghc#10244