llvm dev - Feb 2005 - [LLVMdev] Segmentation Fault(Modifying BasicBlockPlacement.cpp)

>> Is attached patch acceptable?
>
> Looks great, applied, thanks!
>
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050131/023931.html
Thanks!
>> Also I have in Makefile.rules (but not include in patch) some 
>> modification for simplify used common Makefile.rules in LLVM projects
and
>> non-LLVM project (guarding some LLVM specific parts by ifdef 
>> LLVM_OBJ_ROOT/LLVM_SRC_ROOT vars).
At this moment I am test ability use installed LLVM version to build project 
instead requare have builded LLVM object dir.

And i have problem with installed LLVM include dir.

Makefile.rules install only $(PROJ_SRC_ROOT)/include (including *.in files) 
and ignore headers in $(PROJ_OBJ_ROOT)/include
As result installed LLVM does't have all headers for building external 
projects, for example, llvm/ADT/iterator

Proposed patch attached.

It tested making full LLVM build, install and uninstall.

Vladimir
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Hi, 

I have been trying to randomize blocks in a program and modified
"BasicBlockPlacement.cpp" for the purpose but getting segmentation
fault.I am not able to determine the problem.Can anyone please decrypt these
error messages or suggest what might be the possible cause of failure?

-----------------------------------------------------------------------------------------------------

opt((anonymous namespace)::PrintStackTrace()+0x18)[0x8691968]
opt((anonymous namespace)::SignalHandler(int)+0xd8)[0x8691bc8]
/lib/tls/libc.so.6[0x688a48]
opt(llvm::BasicBlock::getNext()+0x6)[0x83d36d0]
opt(llvm::SymbolTableListTraits<llvm::BasicBlock, llvm::Function,
llvm::Function, llvm::ilist_traits<llvm::BasicBlock>
>::getNext(llvm::BasicBlock*)+0x11)[0x83d36c5]
opt(llvm::ilist_iterator<llvm::BasicBlock>::operator++()+0x17)[0x83d011d]
opt(llvm::ilist_iterator<llvm::BasicBlock>::operator++(int)+0x1c)[0x849c64e]
/home/tsharma/ankur/llvm/Debug/lib/LLVMHello.so((anonymous
namespace)::Hello::PlaceBlocks(llvm::BasicBlock*)+0x196)[0x115616]
/home/tsharma/ankur/llvm/Debug/lib/LLVMHello.so((anonymous
namespace)::Hello::runOnFunction(llvm::Function&)+0x68)[0x115450]
opt(llvm::PassManagerTraits<llvm::Function>::runPass(llvm::FunctionPass*,
llvm::Function*)+0x1b)[0x8645e0b]
opt(llvm::PassManagerT<llvm::Function>::runOnUnit(llvm::Function*)+0x5c5)[0x8645739]
opt(llvm::PassManagerTraits<llvm::Function>::runOnFunction(llvm::Function&)+0x1b)[0x86463af]
opt(llvm::FunctionPass::runOnModule(llvm::Module&)+0xa4)[0x85ef606]
opt(llvm::PassManagerTraits<llvm::Module>::runPass(llvm::ModulePass*,
llvm::Module*)+0x1b)[0x8640f7b]
opt(llvm::PassManagerT<llvm::Module>::runOnUnit(llvm::Module*)+0x5c5)[0x863ff8b]
opt(llvm::PassManagerTraits<llvm::Module>::runOnModule(llvm::Module&)+0x1b)[0x8642f0d]
opt(llvm::PassManager::run(llvm::Module&)+0x1f)[0x85ee965]
opt(main+0x988)[0x83b225c]
/lib/tls/libc.so.6(__libc_start_main+0xe3)[0x675e33]
opt(__gxx_personality_v0+0x111)[0x83b1751]
Segmentation fault
------------------------------------------------------------------------------------------------------

Thanks

Tanu

 

		
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On Mon, 7 Feb 2005, Tanu Sharma wrote:
> I have been trying to randomize blocks in a program and modified 
> "BasicBlockPlacement.cpp" for the purpose but getting
segmentation
> fault.I am not able to determine the problem.Can anyone please decrypt 
> these error messages or suggest what might be the possible cause of 
> failure?
I'd be happy to fix this, but I need a proper testcase and instructions to 
reproduce it.  Can you please send me the bytecode file and commands you 
are using to do this?

Also, have you tried out bugpoint?  Please give it a try first, as it will 
probably shrink the testcase down to something small.  You should be 
able to run it like:

bugpoint -block-placement -other-options-you-need test.bc

... and it should hopefully give you a smaller .bc file.  Regardless, if 
you send me the testcase, I'll fix the bug.

Thanks!

-Chris
>
-----------------------------------------------------------------------------------------------------
>
> opt((anonymous namespace)::PrintStackTrace()+0x18)[0x8691968]
> opt((anonymous namespace)::SignalHandler(int)+0xd8)[0x8691bc8]
> /lib/tls/libc.so.6[0x688a48]
> opt(llvm::BasicBlock::getNext()+0x6)[0x83d36d0]
> opt(llvm::SymbolTableListTraits<llvm::BasicBlock, llvm::Function,
llvm::Function, llvm::ilist_traits<llvm::BasicBlock>
>::getNext(llvm::BasicBlock*)+0x11)[0x83d36c5]
>
opt(llvm::ilist_iterator<llvm::BasicBlock>::operator++()+0x17)[0x83d011d]
>
opt(llvm::ilist_iterator<llvm::BasicBlock>::operator++(int)+0x1c)[0x849c64e]
> /home/tsharma/ankur/llvm/Debug/lib/LLVMHello.so((anonymous
namespace)::Hello::PlaceBlocks(llvm::BasicBlock*)+0x196)[0x115616]
> /home/tsharma/ankur/llvm/Debug/lib/LLVMHello.so((anonymous
namespace)::Hello::runOnFunction(llvm::Function&)+0x68)[0x115450]
>
opt(llvm::PassManagerTraits<llvm::Function>::runPass(llvm::FunctionPass*,
llvm::Function*)+0x1b)[0x8645e0b]
>
opt(llvm::PassManagerT<llvm::Function>::runOnUnit(llvm::Function*)+0x5c5)[0x8645739]
>
opt(llvm::PassManagerTraits<llvm::Function>::runOnFunction(llvm::Function&)+0x1b)[0x86463af]
> opt(llvm::FunctionPass::runOnModule(llvm::Module&)+0xa4)[0x85ef606]
> opt(llvm::PassManagerTraits<llvm::Module>::runPass(llvm::ModulePass*,
llvm::Module*)+0x1b)[0x8640f7b]
>
opt(llvm::PassManagerT<llvm::Module>::runOnUnit(llvm::Module*)+0x5c5)[0x863ff8b]
>
opt(llvm::PassManagerTraits<llvm::Module>::runOnModule(llvm::Module&)+0x1b)[0x8642f0d]
> opt(llvm::PassManager::run(llvm::Module&)+0x1f)[0x85ee965]
> opt(main+0x988)[0x83b225c]
> /lib/tls/libc.so.6(__libc_start_main+0xe3)[0x675e33]
> opt(__gxx_personality_v0+0x111)[0x83b1751]
> Segmentation fault
>
------------------------------------------------------------------------------------------------------
>
> Thanks
>
> Tanu
>
>
>
>
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Mail - Helps protect you from nasty viruses.
-Chris

-- 
http://nondot.org/sabre/
http://llvm.cs.uiuc.edu/

On Sun, 6 Feb 2005, Vladimir Merzliakov wrote:
> And i have problem with installed LLVM include dir.
>
> Makefile.rules install only $(PROJ_SRC_ROOT)/include (including *.in files)
> and ignore headers in $(PROJ_OBJ_ROOT)/include
> As result installed LLVM does't have all headers for building external 
> projects, for example, llvm/ADT/iterator
>
> Proposed patch attached.
> It tested making full LLVM build, install and uninstall.
Looks good to me, patch applied:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050207/023978.html

Thanks!

-Chris

-- 
http://nondot.org/sabre/
http://llvm.cs.uiuc.edu/