[MacPorts] #63101: clang-12 @12.0.0: error: non-constant-expression cannot be narrowed from type 'long long' to 'std::size_t' (aka 'unsigned long') in initializer list [-Wc++11-narrowing]

[MacPorts]

#63101: clang-12 @12.0.0: error: non-constant-expression cannot be narrowed from
type 'long long' to 'std::size_t' (aka 'unsigned long') in initializer list
[-Wc++11-narrowing]
-------------------------+------------------------
  Reporter:  ryandesign  |      Owner:  kencu
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.99
Resolution:              |   Keywords:  highsierra
      Port:  clang-12    |
-------------------------+------------------------

Comment (by ryandesign):

 Even without universal, clang-12 won't build with clang-10:

 {{{
 llvm/include/llvm/Demangle/ItaniumDemangle.h:955:10: error: expression is
 not an integral constant expression
     case TemplateParamKind::Type:
          ^~~~~~~~~~~~~~~~~~~~~~~
 }}}

 Nor will it build with clang-11:

 {{{
 llvm/include/llvm/Demangle/ItaniumDemangle.h:116:8: error: ISO C++ forbids
 forward references to 'enum' types
   enum Kind : unsigned char {
        ^
 llvm/include/llvm/Demangle/ItaniumDemangle.h:116:24: error: expected '('
 for function-style cast or type construction
   enum Kind : unsigned char {
               ~~~~~~~~ ^
 llvm/include/llvm/Demangle/ItaniumDemangle.h:116:13: error: field has
 incomplete type 'enum Kind'
   enum Kind : unsigned char {
             ^
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/63101#comment:4>
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