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nhc-bugs@haskell.org

May 2006

3 participants
2 discussions

Bus Error and Segmentation Fault when Heap Profiling is On
by Shin-Cheng Mu 02 Jun '06

02 Jun '06

Hi, This is another potential bug. Unfortunately I currently cannot reproduce it on smaller programs. I tried to do heap profiling on the following code: http://www.psdlab.org/~scm/hx.tar.gz The main program is hxpc.hs. I tried to compile it with hmake -nhc98 -p hxpc and run it on a small sample input scm$ cat > temp.xml <a><b><item>123</item></b><c></c></a> scm$ ./hxpc temp.xml Bus error scm$ ./hxpc temp.xml +RTS -p Segmentation fault Increasing the heap size does not seem to help. If I compile the program without the -p option, it runs fine. Since Malcolm Wallace has already profiled the program on his machine, it seems to be a platform specific problem I installed NHC98 1.18_4 using Darwin Ports, on a PowerPC G4 based Mac, running OS X 10.4 and GCC 4.0. sincerely, Shin-Cheng Mu

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ld: Undefined symbols on OS X when compiling with -t
by Shin-Cheng Mu 22 May '06

22 May '06

Hi, I just installed NHC98 using Darwin Ports on a PowerPC G4 based Mac, running OS X 10.4 with GCC 4.0. NHC works fine without profiling options. When I turned on time profiling, however, NHC98 appears to have problems linking: scm$ cat text.hs main = print (foldr (+) 0 [1..10000]) scm$ hmake -nhc98 -t text nhc98 -t -c -o text.z.o text.hs nhc98 -t -o text text.z.o /tmp/tprofusr3456.c: In function 'tprofTMInitTreeUsr': /tmp/tprofusr3456.c:21: warning: incompatible implicit declaration of built-in function 'strdup' /usr/bin/ld: Undefined symbols: _FN_NHC_46Internal_46_95apply1 _FN_NHC_46Internal_46_95apply2 _TMSUB_NHC_46DErrNo _TM_NHC_46DErrNo _TMSUB_NHC_46PackedString _TM_NHC_46PackedString collect2: ld returned 1 exit status Is it a bug, or is something missing in Darwin Ports? sincerely, Shin-Cheng Mu

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