[llvm-bugs] [Bug 28303] New: [DebugInfo] Array of complete structure which was declared incomplete first is does not have size assigned to its debug info metadata.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28303

            Bug ID: 28303
           Summary: [DebugInfo] Array of complete structure which was
                    declared incomplete first is does not have size
                    assigned to its debug info metadata.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: amjad.aboud at intel.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

There is a bug in the front-end where an array of a structure, which was
declared as incomplete structure first, ends up not getting a size assigned to
it.


Example - t.cpp:
  struct A(*p)[3];
  struct A { int f; } a[3];

command: clang -g -c -S -emit-llvm -o - -x c++ -gcodeview t.cpp

!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, elements: !11)
!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1,
line: 2, size: 32, align: 32, elements: !8, identifier: ".?AUA@@")
!8 = !{!9}
!9 = !DIDerivedType(tag: DW_TAG_member, name: "f", scope: !7, file: !1, line:
2, baseType: !10, size: 32, align: 32)
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !{!12}
!12 = !DISubrange(count: 3)


Where it should be: 
!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 96, align:
32, elements: !11)

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