[Issue 13795] DMD ICE segfault compiling druntime

Nov 29, 2014

John Colvin

Nov 30, 2014

Kenji Hara

Dec 01, 2014

Dec 04, 2014

Dec 09, 2014

Dec 09, 2014

Dec 09, 2014

Dec 10, 2014

github-bugzilla@puremagic.com

Dec 15, 2014

Peter Alexander

Feb 19, 2015

github-bugzilla@puremagic.com

November 29, 2014

[Issue 13795] DMD ICE segfault compiling druntime

Posted by John Colvin

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John Colvin

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

--- Comment #1 from John Colvin <john.loughran.colvin@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

--

https://issues.dlang.org/show_bug.cgi?id=13795 Paolo Invernizzi <paolo.invernizzi@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |paolo.invernizzi@gmail.com --

https://issues.dlang.org/show_bug.cgi?id=13795 Peter Alexander <peter.alexander.au@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |peter.alexander.au@gmail.co | |m --- Comment #4 from Peter Alexander <peter.alexander.au@gmail.com> --- I'm also hitting this, same call stack. Was introduced with this commit to dmd https://github.com/D-Programming-Language/dmd/commit/262905e4419340e72ffb1514d38f94558a99c357 Looks like it's an unaligned access -> 0x10002e2bd: movaps %xmm1, 0x40(%rdi) %rdi = 0x00007fff5fbfd2e8 <--- movaps requires 16-byte align --

https://issues.dlang.org/show_bug.cgi?id=13795 --- Comment #6 from github-bugzilla@puremagic.com --- Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/6f42e722534ec043f52e97f05783969612df8d7b Issue 13795 - Add longdouble to UnionExp to provide alignment https://github.com/D-Programming-Language/dmd/commit/c23d48280f4ebe1b64ec06bc3789c2b2763e0134 Merge pull request #4207 from Poita/Issue13795 Issue 13795 - Add longdouble to UnionExp to provide alignment --

https://issues.dlang.org/show_bug.cgi?id=13795 --- Comment #7 from github-bugzilla@puremagic.com --- Commits pushed to 2.067 at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/6f42e722534ec043f52e97f05783969612df8d7b Issue 13795 - Add longdouble to UnionExp to provide alignment https://github.com/D-Programming-Language/dmd/commit/c23d48280f4ebe1b64ec06bc3789c2b2763e0134 Merge pull request #4207 from Poita/Issue13795 --

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