[PATCH] D148914: [Sema][NFC] add check before using `BuildExpressionFromIntegralTemplateArgument`

[Congcong Cai via Phabricator via cfe-commits]

HerrCai0907 created this revision.
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HerrCai0907 requested review of this revision.
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This patch wants to avoid Sema crash for inline friend decl like

  template <class F1> int foo(F1 X);
  template <int A1> struct A {
    template <class F1> friend int foo(F1 X) { return A1; }
  };
  
  template struct A<1>;
  int a = foo(1.0);

But this case is still not fixed


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D148914

Files:
  clang/lib/Sema/SemaTemplateInstantiate.cpp


Index: clang/lib/Sema/SemaTemplateInstantiate.cpp
===================================================================
--- clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -1849,7 +1849,7 @@
     assert(!paramType->isDependentType() && "param type still dependent");
     result = SemaRef.BuildExpressionFromDeclTemplateArgument(arg, paramType, loc);
     refParam = paramType->isReferenceType();
-  } else {
+  } else if (arg.getKind() == TemplateArgument::Integral) {
     result = SemaRef.BuildExpressionFromIntegralTemplateArgument(arg, loc);
     assert(result.isInvalid() ||
            SemaRef.Context.hasSameType(result.get()->getType(),


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