Actually the failure is in the compilation...

# clang -DHAVE_CONFIG_H -I. -I../include -I../include -I/sw/include 
-I../include -g -O2 -MT pr0be.lo -MD -MP -MF .deps/pr0be.Tpo -c 
filter/measure/pr0be.c  -fno-common -DPIC -o .libs/pr0be.o
0  clang             0x0000000104498422 _ZL15PrintStackTracePv + 34
1  clang             0x00000001044988a9 _ZL13SignalHandleri + 553
2  libsystem_c.dylib 0x00007fff9a800cfa _sigtramp + 26
3  libsystem_c.dylib 0x00007fff9a7ff1a4 malloc + 44
4  clang             0x00000001037c3cd8 
_ZL13LowerConstantPKN4llvm8ConstantERNS_10AsmPrinterE + 1304
5  clang             0x00000001037c3cd8 
_ZL13LowerConstantPKN4llvm8ConstantERNS_10AsmPrinterE + 1304
6  clang             0x00000001037c3318 
_ZL22EmitGlobalConstantImplPKN4llvm8ConstantEjRNS_10AsmPrinterE + 3128
7  clang             0x00000001037c17d8 
llvm::AsmPrinter::EmitGlobalVariable(llvm::GlobalVariable const*) + 1736
8  clang             0x00000001037c0c6f 
llvm::AsmPrinter::doFinalization(llvm::Module&) + 79
9  clang             0x000000010373a507 
llvm::FPPassManager::runOnModule(llvm::Module&) + 231
10 clang             0x00000001037358c1 
llvm::MPPassManager::runOnModule(llvm::Module&) + 289
11 clang             0x00000001037352c5 
llvm::PassManagerImpl::run(llvm::Module&) + 277
12 clang             0x00000001037351ad llvm::PassManager::run(llvm::Module&) + 
13
13 clang             0x0000000103713e3c 
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions 
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*, 
clang::BackendAction, llvm::raw_ostream*) + 4508
14 clang             0x0000000103711641 
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 513
15 clang             0x00000001035dd0f6 clang::ParseAST(clang::Sema&, bool) + 
406
16 clang             0x00000001035dbbd7 clang::CodeGenAction::ExecuteAction() + 
855
17 clang             0x00000001035ae13f 
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 879
18 clang             0x00000001035acdcb 
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2683
19 clang             0x000000010359f5ce cc1_main(char const**, char const**, 
char const*, void*) + 5086
20 clang             0x0000000103579dd8 main + 648
21 clang             0x0000000103579b44 start + 52
22 clang             0x0000000000000043 start + 18446744069358511411
Stack dump:
0.      Program arguments: /usr/bin/clang -cc1 -triple 
x86_64-apple-macosx10.7.4 -emit-obj -disable-free -disable-llvm-verifier 
-main-file-name pr0be.c -pic-level 1 -mdisable-fp-elim -relaxed-aliasing 
-masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 128.2 -g 
-coverage-file .libs/pr0be.o -resource-dir /usr/bin/../lib/clang/3.1 
-dependency-file .deps/pr0be.Tpo -sys-header-deps -MP -MT pr0be.lo -D 
HAVE_CONFIG_H -D PIC -I . -I ../include -I ../include -I /sw/include -I 
../include -fmodule-cache-path /var/tmp/clang-module-cache -O2 
-fdebug-compilation-dir /sw/src/fink.build/frei0r-dev-1.3-1/frei0r-1.3/src 
-ferror-limit 19 -fmessage-length 173 -stack-protector 1 -fblocks 
-fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-dispatch-method=mixed 
-fno-common -fdiagnostics-show-option -fcolor-diagnostics -o .libs/pr0be.o -x c 
filter/measure/pr0be.c 
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'filter/measure/pr0be.c'.
clang: error: unable to execute command: Segmentation fault: 11
clang: error: clang frontend command failed due to signal 2 (use -v to see 
invocation)
clang: note: diagnostic msg: Please submit a bug report to 
http://developer.apple.com/bugreporter/ and include command line arguments and 
all diagnostic information.
clang: note: diagnostic msg: Preprocessed source(s) and associated run 
script(s) are located at:
clang: note: diagnostic msg: /tmp/pr0be-qx6Qf9.i
clang: note: diagnostic msg: /tmp/pr0be-qx6Qf9.sh

This appears to be a bug in clang 3.1svn of Xcode 4.3.3 because if the clang 
from our llvm31 package is used,
the compiler crash doesn't occur. Also the compiler crash can be suppressed by 
lowering the optimization for that 
file to -O1 from -O2.
             Jack

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