I can not understand this Error: undefined identifier `cpp_longlong`

[Dakota]

On Wednesday, 20 November 2024 at 07:02:25 UTC, Dakota wrote:
> I am sure it defined because I add static assert to confirm 
> this `config.d`:
>

and not sure how to work this around:

```sh
  #0 0x0000000103d4e8f7 
llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) 
(/ldc/bin/ldc2+0x1038098f7)
  #1 0x0000000103d4c976 llvm::sys::RunSignalHandlers() 
(/ldc/bin/ldc2+0x103807976)
  #2 0x0000000103d4f0c0 SignalHandler(int) 
(/ldc/bin/ldc2+0x10380a0c0)
  #3 0x00007ff8111ef5ed 
(/usr/lib/system/libsystem_platform.dylib+0x7ff8004265ed)
  #4 0x0000000000000004
  #5 0x000000010418ac22 
ToConstElemVisitor::visit(StructLiteralExp*) 
(/ldc/bin/ldc2+0x103c45c22)
  #6 0x0000000104148221 DtoConstExpInit(Loc const&, Type*, 
Expression*) (/ldc/bin/ldc2+0x103c03221)
  #7 0x00000001041c023e IrGlobal::define() 
(/ldc/bin/ldc2+0x103c7b23e)
  #8 0x0000000104129575 CodegenVisitor::visit(VarDeclaration*) 
(/ldc/bin/ldc2+0x103be4575)
  #9 0x000000010412903d CodegenVisitor::visit(AttribDeclaration*) 
(/ldc/bin/ldc2+0x103be403d)
#10 0x000000010412903d CodegenVisitor::visit(AttribDeclaration*) 
(/ldc/bin/ldc2+0x103be403d)
#11 0x000000010412903d CodegenVisitor::visit(AttribDeclaration*) 
(/ldc/bin/ldc2+0x103be403d)
#12 0x0000000104129e7d CodegenVisitor::visit(StructDeclaration*) 
(/ldc/bin/ldc2+0x103be4e7d)
#13 0x000000010412903d CodegenVisitor::visit(AttribDeclaration*) 
(/ldc/bin/ldc2+0x103be403d)
#14 0x0000000104150786 codegenModule(IRState*, Module*) 
(/ldc/bin/ldc2+0x103c0b786)
#15 0x00000001041d59ba ldc::CodeGenerator::emit(Module*) 
(/ldc/bin/ldc2+0x103c909ba)
#16 0x00000001041ef554 codegenModules(Array<Module*>&) 
(/ldc/bin/ldc2+0x103caa554)
#17 0x00000001040e59c1 mars_tryMain(Param&, Array<char const*>&) 
(/ldc/bin/ldc2+0x103ba09c1)
Error: Error executing /ldc/bin/ldc2: Segmentation fault: 11
```

linux:

```sh
  #0 0x000055a0c888d757 
llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) 
(/ldc/bin/ldc2+0x6dc5757)
  #1 0x000055a0c888b54c llvm::sys::RunSignalHandlers() 
(/ldc/bin/ldc2+0x6dc354c)
  #2 0x000055a0c888ddff SignalHandler(int) Signals.cpp:0:0
  #3 0x00007f72233e7050 (/lib/x86_64-linux-gnu/libc.so.6+0x3c050)
  #4 0x000055a0c8b97a83 ToConstElemVisitor::visit(AddrExp*) 
ld-temp.o:0:0
  #5 0x000055a0c8b987f4 
ToConstElemVisitor::visit(StructLiteralExp*) ld-temp.o:0:0
  #6 0x000055a0c8b40166 DtoConstExpInit(Loc const&, Type*, 
Expression*) (/ldc/bin/ldc2+0x7078166)
  #7 0x000055a0c8bcf23f IrGlobal::define() 
(/ldc/bin/ldc2+0x710723f)
  #8 0x000055a0c8b4fa13 CodegenVisitor::visit(VarDeclaration*) 
ld-temp.o:0:0
  #9 0x000055a0c8b4f41d CodegenVisitor::visit(AttribDeclaration*) 
ld-temp.o:0:0
#10 0x000055a0c8b4f41d CodegenVisitor::visit(AttribDeclaration*) 
ld-temp.o:0:0
#11 0x000055a0c8b4f41d CodegenVisitor::visit(AttribDeclaration*) 
ld-temp.o:0:0
#12 0x000055a0c8b502bd CodegenVisitor::visit(StructDeclaration*) 
ld-temp.o:0:0
#13 0x000055a0c8b4f41d CodegenVisitor::visit(AttribDeclaration*) 
ld-temp.o:0:0
#14 0x000055a0c8b53e12 codegenModule(IRState*, Module*) 
(/ldc/bin/ldc2+0x708be12)
#15 0x000055a0c8bf0415 ldc::CodeGenerator::emit(Module*) 
(/ldc/bin/ldc2+0x7128415)
#16 0x000055a0c56312a8 codegenModules(Array<Module*>&) 
(/ldc/bin/ldc2+0x3b692a8)
#17 0x000055a0c55da231 mars_tryMain(Param&, Array<char const*>&) 
(/ldc/bin/ldc2+0x3b12231)
#18 0x000055a0c5634510 cppmain() (/ldc/bin/ldc2+0x3b6c510)
#19 0x000055a0c8daa1bd 
_D2rt6dmain212_d_run_main2UAAamPUQgZiZ6runAllMFZv 
(/ldc/bin/ldc2+0x72e21bd)
#20 0x000055a0c8da9f98 _d_run_main2 (/ldc/bin/ldc2+0x72e1f98)
#21 0x000055a0c8da9dad _d_run_main (/ldc/bin/ldc2+0x72e1dad)
#22 0x000055a0c8becff8 main (/ldc/bin/ldc2+0x7124ff8)
#23 0x00007f72233d224a __libc_start_call_main 
./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#24 0x00007f72233d2305 call_init ./csu/../csu/libc-start.c:128:20
#25 0x00007f72233d2305 __libc_start_main 
./csu/../csu/libc-start.c:347:5
#26 0x000055a0c5638f6e _start (/ldc/bin/ldc2+0x3b70f6e)
Error: Error executing /ldc/bin/ldc2: Segmentation fault

```