This change fixes a crash on initialization of a reference from ({}) during
template instantiation and incidentally improves diagnostics.
This reverts a prior attempt to handle this in r286721. Instead, we teach the
initialization code that initialization cannot be performed if a source type
is required and the initializer is an initializer list (which is not an
expression and does not have a type), and likewise for function-style cast
expressions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@298676 91177308-0d34-0410-b5e6-96231b3b80d8
If initializer contains parentheses around braced list where it is not allowed,
as in construct int({0}), clang issued message like `functional-style cast
from 'void' to 'int' is not allowed`, which does not help much. Both gcc and
msvc issue message `list-initializer for non-class type must not be
parenthesized`, which is more descriptive. This change implements similar
message for clang.
Differential Revision: https://reviews.llvm.org/D25816
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We could probably make this work if we cared enough. However, we are
far outside any language rules at this point.
This fixes PR21834.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@235818 91177308-0d34-0410-b5e6-96231b3b80d8
based on whether "redundant" braces are ever reasonable as part of the
initialization of the entity, rather than whether the initialization is
"top-level". In passing, add a warning flag for it.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@228896 91177308-0d34-0410-b5e6-96231b3b80d8
before retrying the initialization to produce diagnostics. Otherwise, we may
fail to produce any diagnostics, and silently produce invalid AST in a -Asserts
build. Also add a note to this codepath to make it more clear why we were
trying to create a temporary.
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variable from being the function to being the enclosing namespace scope (in
C++) or the TU (in C). This allows us to fix a selection of related issues
where we would build incorrect redeclaration chains for such declarations, and
fail to notice type mismatches.
Such declarations are put into a new IdentifierNamespace, IDNS_LocalExtern,
which is only found when searching scopes, and not found when searching
DeclContexts. Such a declaration is only made visible in its DeclContext if
there are no non-LocalExtern declarations.
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initialization. Previously we would incorrectly require an extra set of braces
around such initializers.
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resolving an overloaded function reference within an initializer list.
Previously we would try to resolve the overloaded function reference without
first stripping off the InitListExpr wrapper.
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This supports single-element initializer lists for references according to DR1288, as well as creating temporaries and binding to them for other initializer lists.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145186 91177308-0d34-0410-b5e6-96231b3b80d8
Richard Smith