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Be clear about virtual table pointer corruptuion rather than the vtable itself.

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From-SVN: r256852
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Martin Sebor 2018-01-18 16:26:14 +00:00 committed by Martin Sebor
parent 00850e40be
commit 8ca07d928c
2 changed files with 9 additions and 5 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2018-01-18 Martin Sebor <msebor@redhat.com>
* doc/invoke.texi (-Wclass-memaccess): Tweak text.
2018-01-18 Jan Hubicka <hubicka@ucw.cz>
PR ipa/83619

10
gcc/doc/invoke.texi
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@ -2970,11 +2970,11 @@ Warn when the destination of a call to a raw memory function such as
@code{memset} or @code{memcpy} is an object of class type, and when writing
into such an object might bypass the class non-trivial or deleted constructor
or copy assignment, violate const-correctness or encapsulation, or corrupt
the virtual table. Modifying the representation of such objects may violate
invariants maintained by member functions of the class. For example, the call
to @code{memset} below is undefined because it modifies a non-trivial class
object and is, therefore, diagnosed. The safe way to either initialize or
clear the storage of objects of such types is by using the appropriate
virtual table pointers. Modifying the representation of such objects may
violate invariants maintained by member functions of the class. For example,
the call to @code{memset} below is undefined because it modifies a non-trivial
class object and is, therefore, diagnosed. The safe way to either initialize
or clear the storage of objects of such types is by using the appropriate
constructor or assignment operator, if one is available.
@smallexample
std::string str = "abc";