Using Bugpoint to debug miscompilation

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1

Hi,

I am trying to reduce what I believe to be a miscompilation bug.

Running lli on my bitcode file causes a segmentation fault.

However, running bugpoint as

bugpoint file.bc

gives me the following errors,

/tmp/ccAdmNqH.o: In function _ZL17bus_error_handleriP7siginfoPv': bugpoint-test-program.bc-Vega5s.cbe.c:(.text+0x1b4e1): undefined reference to std::cerr’
/tmp/ccAdmNqH.o: In function bb_poolcheck_debug': bugpoint-test-program.bc-Vega5s.cbe.c:(.text+0x1bdbb): undefined reference to std::cerr’
/tmp/ccAdmNqH.o: In function DisplayChessBoard_OC_TEST': bugpoint-test-program.bc-Vega5s.cbe.c:(.text+0x3247d): undefined reference to std::cerr’
/tmp/ccAdmNqH.o: In function DisplayPieceBoards': bugpoint-test-program.bc-Vega5s.cbe.c:(.text+0x3a820): undefined reference to std::cerr’
bugpoint-test-program.bc-Vega5s.cbe.c:(.text+0x3a8b1): undefined reference to `std::cerr’

What is the correct options I need to pass to bugpoint?

Thanks,
Arushi

2

Hi,

I am trying to reduce what I believe to be a miscompilation bug.

Running lli on my bitcode file causes a segmentation fault.

However, running bugpoint as

bugpoint file.bc

I think you need to tell bugpoint to link in libstdc++. I think you can do that using the -Xlinker option.

– John T.