really stupid error

[d007]

On Saturday, 1 April 2023 at 18:41:26 UTC, user456 wrote:
>
> I have created this https://godbolt.org/z/ePxshnvvc but I dont 
> know if DMD is affected. That seems to be a bug specific to LDC.

Thanks.

`thewilsonator` from github suggestion turn on `opaque pointers`, 
it cause ldc crashed:



```sh
0  ldc2                     0x0000000108e41b37 
llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 39
1  ldc2                     0x0000000108e409e6 
llvm::sys::RunSignalHandlers() + 198
2  ldc2                     0x0000000108e42190 SignalHandler(int) 
+ 288
3  libsystem_platform.dylib 0x00007ff80ae11c1d _sigtramp + 29
4  libsystem_platform.dylib 0x0000000000000008 _sigtramp + 
18446603370398409736
5  ldc2                     0x00000001086f9592 (anonymous 
namespace)::AccessAnalysis::createCheckForAccess(llvm::RuntimePointerChecking&, llvm::PointerIntPair<llvm::Value*, 1u, bool, llvm::PointerLikeTypeTraits<llvm::Value*>, llvm::PointerIntPairInfo<llvm::Value*, 1u, llvm::PointerLikeTypeTraits<llvm::Value*> > >, llvm::DenseMap<llvm::Value const*, llvm::Value*, llvm::DenseMapInfo<llvm::Value const*, void>, llvm::detail::DenseMapPair<llvm::Value const*, llvm::Value*> > const&, llvm::DenseMap<llvm::Value*, unsigned int, llvm::DenseMapInfo<llvm::Value*, void>, llvm::detail::DenseMapPair<llvm::Value*, unsigned int> >&, llvm::Loop*, unsigned int&, unsigned int, bool, bool) + 642
6  ldc2                     0x00000001086f7063 (anonymous 
namespace)::AccessAnalysis::canCheckPtrAtRT(llvm::RuntimePointerChecking&, llvm::ScalarEvolution*, llvm::Loop*, llvm::DenseMap<llvm::Value const*, llvm::Value*, llvm::DenseMapInfo<llvm::Value const*, void>, llvm::detail::DenseMapPair<llvm::Value const*, llvm::Value*> > const&, bool) + 867
7  ldc2                     0x00000001086f65df 
llvm::LoopAccessInfo::analyzeLoop(llvm::AAResults*, 
llvm::LoopInfo*, llvm::TargetLibraryInfo const*, 
llvm::DominatorTree*) + 6287
8  ldc2                     0x00000001086f86be 
llvm::LoopAccessAnalysis::run(llvm::Loop&, 
llvm::AnalysisManager<llvm::Loop, 
llvm::LoopStandardAnalysisResults&>&, 
llvm::LoopStandardAnalysisResults&) + 46
9  ldc2                     0x000000010732ebd8 
llvm::detail::AnalysisPassModel<llvm::Loop, 
llvm::LoopAccessAnalysis, llvm::PreservedAnalyses, 
llvm::AnalysisManager<llvm::Loop, 
llvm::LoopStandardAnalysisResults&>::Invalidator, 
llvm::LoopStandardAnalysisResults&>::run(llvm::Loop&, 
llvm::AnalysisManager<llvm::Loop, 
llvm::LoopStandardAnalysisResults&>&, 
llvm::LoopStandardAnalysisResults&) + 40
10 ldc2                     0x00000001086fd0d2 
llvm::AnalysisManager<llvm::Loop, 
llvm::LoopStandardAnalysisResults&>::getResultImpl(llvm::AnalysisKey*, llvm::Loop&, llvm::LoopStandardAnalysisResults&) + 722
11 ldc2                     0x00000001081e2015 
llvm::LoopAccessInfo const& 
llvm::function_ref<llvm::LoopAccessInfo const& 
(llvm::Loop&)>::callback_fn<llvm::LoopLoadEliminationPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&)::$_0>(long, llvm::Loop&) + 101
12 ldc2                     0x00000001081df0ec 
eliminateLoadsAcrossLoops(llvm::Function&, llvm::LoopInfo&, 
llvm::DominatorTree&, llvm::BlockFrequencyInfo*, 
llvm::ProfileSummaryInfo*, llvm::ScalarEvolution*, 
llvm::AssumptionCache*, llvm::function_ref<llvm::LoopAccessInfo 
const& (llvm::Loop&)>) + 1452
13 ldc2                     0x00000001081dea29 
llvm::LoopLoadEliminationPass::run(llvm::Function&, 
llvm::AnalysisManager<llvm::Function>&) + 569
14 ldc2                     0x0000000107347f72 
llvm::detail::PassModel<llvm::Function, 
llvm::LoopLoadEliminationPass, llvm::PreservedAnalyses, 
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&, 
llvm::AnalysisManager<llvm::Function>&) + 18
15 ldc2                     0x0000000108ba00a8 
llvm::PassManager<llvm::Function, 
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&, 
llvm::AnalysisManager<llvm::Function>&) + 392
16 ldc2                     0x00000001070eb512 
llvm::detail::PassModel<llvm::Function, 
llvm::PassManager<llvm::Function, 
llvm::AnalysisManager<llvm::Function> >, llvm::PreservedAnalyses, 
llvm::AnalysisManager<llvm::Function> >::run(llvm::Function&, 
llvm::AnalysisManager<llvm::Function>&) + 18
17 ldc2                     0x0000000108ba40af 
llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, 
llvm::AnalysisManager<llvm::Module>&) + 447
18 ldc2                     0x00000001070eb312 
llvm::detail::PassModel<llvm::Module, 
llvm::ModuleToFunctionPassAdaptor, llvm::PreservedAnalyses, 
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&, 
llvm::AnalysisManager<llvm::Module>&) + 18
19 ldc2                     0x0000000108b9eb89 
llvm::PassManager<llvm::Module, 
llvm::AnalysisManager<llvm::Module> >::run(llvm::Module&, 
llvm::AnalysisManager<llvm::Module>&) + 441
20 ldc2                     0x00000001092a4442 
writeModule(llvm::Module*, char const*) + 8418
21 ldc2                     0x000000010929f1e0 
ldc::CodeGenerator::writeAndFreeLLModule(char const*) + 1360
22 ldc2                     0x00000001092bc58f 
codegenModules(Array<Module*>&) + 7631
23 ldc2                     0x00000001091c6540 
mars_mainBody(Param&, Array<char const*>&, Array<char const*>&) + 
5136
```