All,

While compiling the new release (6.8.1, with both the primary source and the extra libraries) I experienced a gcc error, gcc of course called by ghc.  I’m compiling 6.8.1 with ghc 6.6.1.  The gcc version is 4.1.1.

I’ve seen similar behavior in the past where some sort of heap corruption occurs within gcc and triggers an internal compiler error.  So this may not be a true ghc error at all, but one can’t completely rule it out.

This type of error, especially appearing at random, is suggestive of a memory hardware problem.  To eliminate this possibility I ran memtest86 for several hours on the machine.  No errors were detected.

I’ll repeat the build again from a fresh directory to see if the problem is repeatable.  Then I plan to run a build after upgrading gcc from 4.1.1 to 4.2.1.  I’ll report the results.

The environment is Linux using kernel 2.6.21.

The compilation command and the resulting error:

/usr/local/bin/ghc -H16m -O  -istage1/utils  -istage1/basicTypes  -istage1/types  -istage1/hsSyn  -istage1/prelude  -istage1/rename  -istage1/typecheck  -istage1/deSugar  -istage1/coreSyn  -istage1/vectorise  -istage1/specialise  -istage1/simplCore  -istage1/stranal  -istage1/stgSyn  -istage1/simplStg  -istage1/codeGen  -istage1/main  -istage1/profiling  -istage1/parser  -istage1/cprAnalysis  -istage1/ndpFlatten  -istage1/iface  -istage1/cmm  -istage1/nativeGen -Wall -fno-warn-name-shadowing -fno-warn-orphans -Istage1 -cpp -fglasgow-exts -fno-generics -Rghc-timing -I. -Iparser -package unix -ignore-package lang -recomp -Rghc-timing  -H16M '-#include "cutils.h"' -DUSING_COMPAT -i../compat -ignore-package Cabal    -c rename/RnSource.lhs -o stage1/rename/RnSource.o  -ohi stage1/rename/RnSource.hi

/tmp/ghc1316_0/ghc1316_0.hc: In function ‘raVb_entry’:

/tmp/ghc1316_0/ghc1316_0.hc:1983:0:

     internal compiler error: in referenced_var_lookup, at tree-dfa.c:578

Please submit a full bug report,

with preprocessed source if appropriate.

See <URL:http://gcc.gnu.org/bugs.html> for instructions.

<<ghc: 586234044 bytes, 718 GCs, 10149393/21203304 avg/max bytes residency (9 samples), 55M in use, 0.02 INIT (0.00 elapsed), 6.94 MUT (27.32 elapsed), 3.53 GC (3.67 elapsed) :ghc>>

make[1]: *** [stage1/rename/RnSource.o] Error 1

make: *** [stage1] Error 1

Seth Kurtzberg

Software Engineer

Specializing in Security, Reliability, and the Hardware/Software Interface