#5486: LLVM can't compile HsOpenSSL
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Reporter: dterei | Owner: dterei
Type: bug | Status: new
Priority: normal | Component: Compiler (LLVM)
Version: 7.2.1 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Compile-time crash
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Comment(by dterei):
OK so its one of the annoying type mismatch issues where LLVM uses a
different intrinsic type for functions then the standard C library ones.
memcpy for libc is:
void *memcpy(void *dst, const void *src, size_t n);
memcpy for llvm is:
void memcpy(i8 *dst, i8 *src, i64 n);
Actually. No this isn't the problem as the code in question isn't using
the LLVM intrinsic. I should check how the LLVM intrinsic is handled as
the above may be an issue.
The problem is the cmm code generated uses two different types for memcpy.
(_s3::I64, PtrHint) = foreign "ccall" memcpy(...)
and
foreign "ccall" memcpy(...)
So sometimes cmm treats it as (void) other times as (void *). Probably
better to fix up the Cmm code gen to be consistent and leave LLVM as its
really doing the right thing.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5486#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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