[Issue 13795] DMD ICE segfault compiling druntime

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13795

--- Comment #1 from John Colvin <john.loughran.colvin at gmail.com> ---
lldb output:

Process 78905 stopped
* thread #1: tid = 0x23835c, 0x000000010002e2bd dmd`ComplexExp::ComplexExp(Loc,
complex_t, Type*) + 45, queue = 'com.apple.main-thread', stop reason =
EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
    frame #0: 0x000000010002e2bd dmd`ComplexExp::ComplexExp(Loc, complex_t,
Type*) + 45
dmd`ComplexExp::ComplexExp(Loc, complex_t, Type*) + 45:
-> 0x10002e2bd:  movaps %xmm1, 0x40(%rdi)
   0x10002e2c1:  movaps %xmm0, 0x30(%rdi)
   0x10002e2c5:  movq   %rcx, 0x20(%rdi)
   0x10002e2c9:  popq   %rbp
(lldb) bt all
* thread #1: tid = 0x23835c, 0x000000010002e2bd dmd`ComplexExp::ComplexExp(Loc,
complex_t, Type*) + 45, queue = 'com.apple.main-thread', stop reason =
EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
  * frame #0: 0x000000010002e2bd dmd`ComplexExp::ComplexExp(Loc, complex_t,
Type*) + 45
    frame #1: 0x0000000100015cbf dmd`Cast(Type*, Type*, Expression*) + 879
    frame #2: 0x00000001000a02a4 dmd`Expression_optimize(Expression*, int,
bool)::OptimizeVisitor::visit(CastExp*) + 964
    frame #3: 0x000000010009f495 dmd`Expression_optimize(Expression*, int,
bool)::OptimizeVisitor::visit(BinExp*) + 133
    frame #4: 0x000000010009ee2a dmd`Expression_optimize(Expression*, int,
bool) + 42
    frame #5: 0x00000001000b845e dmd`ExpStatement::semantic(Scope*) + 94
    frame #6: 0x00000001000b8efc dmd`CompoundStatement::semantic(Scope*) + 284
    frame #7: 0x00000001000545d1 dmd`FuncDeclaration::semantic3(Scope*) + 3425
    frame #8: 0x00000001000d7f84 dmd`TemplateInstance::semantic3(Scope*) + 276
    frame #9: 0x00000001000d295f dmd`TemplateInstance::semantic(Scope*,
Array<Expression*>*) + 2463
    frame #10: 0x000000010003284a dmd`ScopeExp::semantic(Scope*) + 154
    frame #11: 0x00000001000b8423 dmd`ExpStatement::semantic(Scope*) + 35
    frame #12: 0x00000001000b8efc dmd`CompoundStatement::semantic(Scope*) + 284
    frame #13: 0x00000001000545d1 dmd`FuncDeclaration::semantic3(Scope*) + 3425
    frame #14: 0x000000010007c984 dmd`Module::semantic3() + 84
    frame #15: 0x0000000100079f60 dmd`tryMain(unsigned long, char const**) +
10576
    frame #16: 0x0000000100000e18 dmd`_start + 230
    frame #17: 0x0000000100000d31 dmd`start + 33
(lldb) disas
dmd`ComplexExp::ComplexExp(Loc, complex_t, Type*):
   0x10002e290:  pushq  %rbp
   0x10002e291:  movq   %rsp, %rbp
   0x10002e294:  movq   %rsi, 0x8(%rdi)
   0x10002e298:  movq   %rdx, 0x10(%rdi)
   0x10002e29c:  movl   $0x98, 0x18(%rdi)
   0x10002e2a3:  movb   $0x50, 0x28(%rdi)
   0x10002e2a7:  movb   $0x0, 0x29(%rdi)
   0x10002e2ab:  leaq   0x1f4bee(%rip), %rax      ; vtable for ComplexExp + 16
   0x10002e2b2:  movq   %rax, (%rdi)
   0x10002e2b5:  movaps 0x10(%rbp), %xmm0
   0x10002e2b9:  movaps 0x20(%rbp), %xmm1
-> 0x10002e2bd:  movaps %xmm1, 0x40(%rdi)
   0x10002e2c1:  movaps %xmm0, 0x30(%rdi)
   0x10002e2c5:  movq   %rcx, 0x20(%rdi)
   0x10002e2c9:  popq   %rbp
   0x10002e2ca:  retq   
   0x10002e2cb:  nopl   (%rax,%rax)
(lldb) register read
General Purpose Registers:
       rax = 0x0000000100222ea0  dmd`vtable for ComplexExp + 16
       rbx = 0x00007fff5fbff388
       rcx = 0x00000001005018d0
       rdx = 0x0000000d0000000a
       rdi = 0x00007fff5fbff388
       rsi = 0x0000000100405220
       rbp = 0x00007fff5fbff180
       rsp = 0x00007fff5fbff180
        r8 = 0x0000000000000000
        r9 = 0x0000000000000004
       r10 = 0x0000000100600000
       r11 = 0x0000000000000001
       r12 = 0x00000001005018d0
       r13 = 0x00000001005018d0
       r14 = 0x00000001005018d0
       r15 = 0x0000000100616100
       rip = 0x000000010002e2bd  dmd`ComplexExp::ComplexExp(Loc, complex_t,
Type*) + 45
    rflags = 0x0000000000010206
        cs = 0x000000000000002b
        fs = 0x0000000000000000
        gs = 0x0000000000000000

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