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# d3971fe9 20-Aug-2019 Artem Dergachev <[email protected]>

[analyzer] Improve VirtualCallChecker and enable parts of it by default.

Calling a pure virtual method during construction or destruction
is undefined behavior. It's worth it to warn about it by def

[analyzer] Improve VirtualCallChecker and enable parts of it by default.

Calling a pure virtual method during construction or destruction
is undefined behavior. It's worth it to warn about it by default.
That part is now known as the cplusplus.PureVirtualCall checker.

Calling a normal virtual method during construction or destruction
may be fine, but does behave unexpectedly, as it skips virtual dispatch.
Do not warn about this by default, but let projects opt in into it
by enabling the optin.cplusplus.VirtualCall checker manually.

Give the two parts differentiated warning text:

Before:

Call to virtual function during construction or destruction:
Call to pure virtual function during construction

Call to virtual function during construction or destruction:
Call to virtual function during destruction

After:

Pure virtual method call:
Call to pure virtual method 'X::foo' during construction
has undefined behavior

Unexpected loss of virtual dispatch:
Call to virtual method 'Y::bar' during construction
bypasses virtual dispatch

Also fix checker names in consumers that support them (eg., clang-tidy)
because we now have different checker names for pure virtual calls and
regular virtual calls.

Also fix capitalization in the bug category.

Differential Revision: https://reviews.llvm.org/D64274

llvm-svn: 369449

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