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the current one.
Rather than attempting to compare whether the previous and current top of
context stack are "equal" (which fails for a number of reasons, such as the
context stack entries containing pointers to objects on the stack, or reaching
the same "top of stack" entry through two different paths), track the depth of
context stack at which we last emitted a note and invalidate it when we pop the
context stack to less than that depth.
This causes us to emit some missing "in instantiation of" notes and to stop
emitting redundant "in instantiation of" stacks matching the previous stack in
rare cases.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@295921 91177308-0d34-0410-b5e6-96231b3b80d8
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also cover libstdc++'s std::__debug::array and std::__profile::array.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@284669 91177308-0d34-0410-b5e6-96231b3b80d8
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not instantiate exception specifications of functions if they were only used in
unevaluated contexts (other than 'noexcept' expressions).
In C++17 onwards, this becomes essential since the exception specification is
now part of the function's type.
Note that this means that constructs like the following no longer work:
struct A {
static T f() noexcept(...);
decltype(f()) *p;
};
... because the decltype expression now needs the exception specification of
'f', which has not yet been parsed.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@284549 91177308-0d34-0410-b5e6-96231b3b80d8
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In certain cases (mostly coming from modules), Sema's idea of the StdNamespace
does not point to the first declaration of namespace std.
Patch by Cristina Cristescu!
Reviewed by Richard Smith.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@279371 91177308-0d34-0410-b5e6-96231b3b80d8
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std::X::swap exception specifications (allowing parsing of non-conforming code
in libstdc++). The old conditions also matched the functions in MSVC's STL,
which were relying on deferred parsing here.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222471 91177308-0d34-0410-b5e6-96231b3b80d8
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a member named 'swap' and then expect unqualified lookup for the name 'swap' in
its exception specification to find anything else.
Without delay-parsed exception specifications, this was ill-formed (NDR) by
[basic.scope.class]p1, rule 2. With delay-parsed exception specifications, the
call to 'swap' unambiguously finds the function being declared, which then
fails because the arguments don't work for that function.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221955 91177308-0d34-0410-b5e6-96231b3b80d8
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