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When we find a friend declaration we have to skip transparent contexts for doing
lookups, but we should not skip them when inserting the new decl if the lookup
found nothing.
Fixes PR15841.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180571 91177308-0d34-0410-b5e6-96231b3b80d8
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This removes a bit of patching that survived r178663. Without it we can produce
better a better error message for
const int a = 5;
static const int a;
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178795 91177308-0d34-0410-b5e6-96231b3b80d8
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Having these not be the same makes an easy to misuse API. We should audit the
uses and probably rename to something like
foo->hasExternalLinkage():
The c++ standard one. That is UniqueExternalLinkage or ExternalLinkage.
foo->hasUniqueExternalLinkage():
Is UniqueExternalLinkage.
foo->hasCogeGenExternalLinkage():
Is ExternalLinkage.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178768 91177308-0d34-0410-b5e6-96231b3b80d8
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Now that we don't have a semantic storage class, use the linkage.
Thanks to Bruce Stephens for reporting this.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178766 91177308-0d34-0410-b5e6-96231b3b80d8
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This test was exactly the opposite of what it should be. We should check if
there old decl has linkage (where it makes sense) and if the new decl has
the extern keyword.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178735 91177308-0d34-0410-b5e6-96231b3b80d8
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caching the linkage for a declaration before we set up its redeclaration chain,
when determining whether a declaration could be a redeclaration of something
from an unimported submodule. We actually want to look at the declaration as if
it were not a redeclaration here, so compute the linkage but don't cache it.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178733 91177308-0d34-0410-b5e6-96231b3b80d8
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Weather we should give C language linkage to functions and variables with
internal linkage probably depends on how much code assumes it. The standard
says they should have no language linkage, but gcc and msvc assign them
C language linkage.
This commit removes the hack that was preventing the mangling on static
functions declare in extern C contexts. It is an experiment to see if we
can implement the rules in the standard.
If it turns out that many users depend on these functions and variables
having C language linkage, we should change isExternC instead and try
to convince the CWG to change the standard.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175937 91177308-0d34-0410-b5e6-96231b3b80d8
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static functions in extern "C" contexts are mangled. Should fix the
bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175132 91177308-0d34-0410-b5e6-96231b3b80d8
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I added hasCLanguageLinkage while fixing some language linkage bugs some
time ago so that I wouldn't have to check all users of isExternC. It turned
out to be a much longer detour than expected, but this patch finally
merges the two again. The isExternC function now implements just the
standard notion of having C language linkage.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175119 91177308-0d34-0410-b5e6-96231b3b80d8
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some cases where functions with no language linkage were being treated as having
C language linkage. In particular, don't warn in
extern "C" {
static NonPod foo();
}
Since getLanguageLinkage checks the language linkage, the linkage computation
cannot use the language linkage. Break the loop by checking just the context
in the linkage computation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175117 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172283 91177308-0d34-0410-b5e6-96231b3b80d8
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Fixes pr14861.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171978 91177308-0d34-0410-b5e6-96231b3b80d8
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It is somewhat hard to test linkage, so I decided to try to add an assert. This
already found some interesting cases where there were different.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171585 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch moves hasCLanguageLinkage to be VarDecl and FunctionDecl methods
so that they can be used from SemaOverload.cpp and then fixes the logic
in Sema::IsOverload.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171193 91177308-0d34-0410-b5e6-96231b3b80d8
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The language linkage of redeclarations must match. GCC was already reporting
an error for this.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171139 91177308-0d34-0410-b5e6-96231b3b80d8
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