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template name is not visible to unqualified lookup.
In order to support this without a severe degradation in our ability to
diagnose typos in template names, this change significantly restructures
the way we handle template-id-shaped syntax for which lookup of the
template name finds nothing.
Instead of eagerly diagnosing an undeclared template name, we now form a
placeholder template-name representing a name that is known to not find
any templates. When the parser sees such a name, it attempts to
disambiguate whether we have a less-than comparison or a template-id.
Any diagnostics or typo-correction for the name are delayed until its
point of use.
The upshot should be a small improvement of our diagostic quality
overall: we now take more syntactic context into account when trying to
resolve an undeclared identifier on the left hand side of a '<'. In
fact, this works well enough that the backwards-compatible portion (for
an undeclared identifier rather than a lookup that finds functions but
no function templates) is enabled in all language modes.
llvm-svn: 360308
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of local classes. We were previously handling this by performing qualified
lookup within a function declaration(!!); replace it with the proper scope
lookup.
llvm-svn: 188050
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NestedNameSpecifier.
CorrectTypo will now see and consider those corrections that are effectively
shadowed by other declarations in a closer context when resolved via an
unqualified lookup. This involves adding any parent namespaces to the set of
namespaces as fully-qualified name specifiers, and also adding potential
corrections that passed name lookup but were rejected by the given
CorrectionCandidateCallback into the set of failed corrections that should be
tried with the set of namespace specifiers.
llvm-svn: 185486
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Infinite recursion was happening when DiagnoseInvalidRedeclaration
called ActOnFunctionDeclarator to check if a typo correction works when
the correction was just to the nested-name-specifier because the wrong
DeclContext was being passed in. Unlike a number of functions
surrounding typo correction, the DeclContext passed in for a function is
the context of the function name after applying any nested name
specifiers, not the lexical DeclContext where the
function+nested-name-specifier appears.
llvm-svn: 153962
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typo correction to introduce a nested-name-specifier; we aren't
prepared to handle it here. Fixes PR12297 / <rdar://problem/11075219>.
llvm-svn: 153445
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and DefaultFunctionArrayLvalueConversion. To prevent
significant regression for should-this-be-a-call fixits,
and to repair some such regression from the introduction of
bound member placeholders, make those placeholder checks
try to build calls appropriately. Harden the build-a-call
logic while we're at it.
llvm-svn: 141738
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Change TypoCorrection to store a set of NamedDecls instead of a single
NamedDecl. Also add initial support for performing function overload
resolution to Sema::DiagnoseEmptyLookup.
llvm-svn: 136807
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is still terrible here because typo correction is not behaving well in
the presence of overloaded functions.
llvm-svn: 135128
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