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Currently there is only support for a -fno-exceptions libc++ build. This is
problematic for functions such as std::terminate() which are defined in
libc++abi and using any of those functions throws away most of the benefits
of using -fno-exceptions (code-size). This patch introduces a -fno-exceptions
libc++abi build to address this issue.
This new variant of libc++abi cannot be linked against any with-exceptions
code as some symbols necessary for handling exceptions are missing in this
library.
Differential revision: http://reviews.llvm.org/D20677
Reviewers: EricWF, mclow.lists, bcraig
llvm-svn: 271267
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members.
Summary:
I accidentally implemented the 4.11 [conv.mem] conversions for libc++abi in a recent patch. @majnemer pointed out that 5.13 [except.handle] only allows the pointer conversions in 4.10 and not those is 4.11. This patch no longer allows the following example code:
```c++
struct A {};
struct B : public A {};
int main() {
try {
throw (int A::*)0;
} catch (int B::*) {
// exception caught here.
}
}
```
Reviewers: mclow.lists, jroelofs, majnemer
Reviewed By: majnemer
Subscribers: majnemer, cfe-commits
Differential Revision: http://reviews.llvm.org/D8845
llvm-svn: 234254
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conversion detection.
Summary:
Currently there are bugs in out detection of multi-level pointer conversions and pointer to member conversions. This patch fixes the following issues.
* Allow multi-level pointers with different nested qualifiers.
* Allow multi-level mixed pointers to objects and pointers to members with different nested qualifiers.
* Allow conversions from `int Base::*` to `int Derived::*` but only for non-nested pointers.
There is still some work that needs to be done to clean this patch up but I want to get some input on it.
Open questions:
* Does `__pointer_to_member_type_info::can_catch(...)` need to adjust the pointer if a base to derived conversion is performed?
Reviewers: danalbert, compnerd, mclow.lists
Reviewed By: mclow.lists
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D8758
llvm-svn: 233984
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