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c++: use modern idioms to make classes non-copyable

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Reported by Don Macpherson.
https://lists.gnu.org/r/bug-bison/2019-05/msg00015.html
https://github.com/akimd/bison/issues/36

* data/skeletons/lalr1.cc, data/skeletons/stack.hh,
* data/skeletons/variant.hh: Delete the copy-ctor and the copy operator.
This commit is contained in:
Akim Demaille
2020-05-01 06:36:19 +02:00
parent fb1d76d9a9
commit 30357ae942
4 changed files with 37 additions and 5 deletions
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11
data/skeletons/stack.hh
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@@ -41,6 +41,13 @@ m4_define([b4_stack_define],
: seq_ (n)
{}
#if 201103L <= YY_CPLUSPLUS
/// Non copyable.
stack (const stack&) = delete;
/// Non copyable.
stack& operator= (const stack&) = delete;
#endif
/// Random access.
///
/// Index 0 returns the topmost element.
@@ -126,8 +133,12 @@ m4_define([b4_stack_define],
};
private:
#if YY_CPLUSPLUS < 201103L
/// Non copyable.
stack (const stack&);
/// Non copyable.
stack& operator= (const stack&);
#endif
/// The wrapped container.
S seq_;
};