#2797: ghci stack overflows when ghc does not
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Reporter: TristanAllwood | Owner:
Type: run-time performance bug | Status: new
Priority: normal | Milestone: 6.10.2
Component: GHCi | Version: 6.11
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
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Comment (by igloo):
In my profiling HEAD, I'm seeing
{{{
(gdb) r [...] -e main z.hs +RTS -DS
[Thread debugging using libthread_db enabled]
[New process 4968]
<interactive>: internal error: ASSERTION FAILED: file (null), line 698
(GHC version 6.11.20090308 for x86_64_unknown_linux)
Please report this as a GHC bug:
http://www.haskell.org/ghc/reportabug
[New Thread 139638659299040 (LWP 4968)]
Program received signal SIGABRT, Aborted.
[Switching to Thread 139638659299040 (LWP 4968)]
0x00007f0027811ef5 in raise () from /lib/libc.so.6
(gdb) bt
#0 0x00007f0027811ef5 in raise () from /lib/libc.so.6
#1 0x00007f0027813413 in abort () from /lib/libc.so.6
#2 0x00000000049a1278 in rtsFatalInternalErrorFn (
s=0x51b3520 "ASSERTION FAILED: file %s, line %u\n", ap=0x7fff30c30cd0)
at RtsMessages.c:164
#3 0x00000000049a0e3c in barf (
s=0x51b3520 "ASSERTION FAILED: file %s, line %u\n") at
RtsMessages.c:40
#4 0x00000000049a0e96 in _assertFail (filename=0x0, linenum=698)
at RtsMessages.c:55
#5 0x00000000049c66c6 in stg_ap_pp_info ()
#6 0x0000000000000000 in ?? ()
}}}
Looks like this is the assertion in `AutoApply_debug_p.cmm` here:
{{{
case FUN,
FUN_1_0,
FUN_0_1,
FUN_2_0,
FUN_1_1,
FUN_0_2,
FUN_STATIC: {
arity = TO_W_(StgFunInfoExtra_arity(%FUN_INFO(info)));
ASSERT(arity > 0);
if (arity == 1) {
R2 = W_[Sp+WDS(1)];
W_[Sp+WDS(1)] = stg_ap_p_info;
Sp_adj(1);
R1 = R1 + 1;
jump %GET_ENTRY(UNTAG(R1));
}
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2797#comment:4>
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