#10926: wrong signature of atomic builtins
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Reporter: schwab | Owner:
Type: bug | Status: patch
Priority: normal | Milestone:
Component: Compiler | Version: 7.10.2
Resolution: | Keywords:
Operating System: Linux | Architecture: aarch64
Type of failure: Building GHC failed | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D1300
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Comment (by Ben Gamari ):
In [changeset:"e3d2bab86fc89113f8ee65800fdfac81d8d54851/ghc"
e3d2bab8/ghc]:
{{{
#!CommitTicketReference repository="ghc"
revision="e3d2bab86fc89113f8ee65800fdfac81d8d54851"
Fix signature of atomic builtins
This patch is due to Andreas Schwab.
This fixes #10926, which reports (on AArch64) errors of the form,
```
/tmp/ghc1492_0/ghc_1.hc:2844:25: warning: passing argument 1 of
'hs_atomic_xor64' makes pointer from integer without a cast
[-Wint-conversion]
_c1Ho = hs_atomic_xor64((*Sp) + (((Sp[1]) << 0x3UL) + 0x10UL),
Sp[2]);
^
In file included from
/home/abuild/rpmbuild/BUILD/ghc-7.10.2/includes/Stg.h:273:0: 0,
from /tmp/ghc1492_0/ghc_1.hc:3:
/home/abuild/rpmbuild/BUILD/ghc-7.10.2/includes/stg/Prim.h:41:11:
note: expected 'volatile StgWord64 *
{aka volatile long unsigned int *}'
but argument is of type 'long unsigned int'
StgWord64 hs_atomic_xor64(volatile StgWord64 *x, StgWord64 val);
^
```
Test Plan: Validate
Reviewers: austin, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D1300
GHC Trac Issues: #10926
}}}
--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10926#comment:3
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