#5003: test 4038 (ghci) fails on OS X 64 bit.
-------------------------------+--------------------------------------------
Reporter: gwright | Owner: gwright
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 7.0.2 | Keywords:
Testcase: | Blockedby:
Os: MacOS X | Blocking:
Architecture: x86_64 (amd64) | Failure: Runtime crash
-------------------------------+--------------------------------------------
Comment(by altaic):
In `StgRun` (in `StgCRun.c`), `rsp` gets set to the bogus address just
before the error. I poked around in `StgRun` a bit and came across a
correlation. Perhaps it's some sort of mmap bug in `Linker.c`.
In `./includes/rts/Constants.h`, changing
{{{
#define RESERVED_C_STACK_BYTES (2048 * SIZEOF_LONG)
}}}
to
{{{
#define RESERVED_C_STACK_BYTES (4096 * SIZEOF_LONG)
}}}
causes the error to happen twice as soon, i.e.
{{{
[...]
first: 748
second: 748
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3f8a88
0x000000010031ab22 in stg_ap_p_info ()
}}}
rather than the original
{{{
[...]
first: 501
second: 501
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3fe8a0
0x000000010031ac72 in stg_ap_p_info ()
}}}
Likewise, changing it to
{{{
#define RESERVED_C_STACK_BYTES (1024 * SIZEOF_LONG)
}}}
causes the error to happen twice as late, i.e
{{{
[...]
first: 22
second: 22
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3ff6e8
0x000000010031ab22 in stg_ap_p_info ()
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5003#comment:7>
GHC <http://www.haskell.org/ghc/>
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