Akim Demaille 3967e46a2d lalr1.cc: fix stack symbol move ...

In some casing, once we moved a stack symbol, we forget to mark the
source stack symbol as emptied.  As a consequence, it may be destroyed
a second time.

This happens when the stack has to be resized.

* data/lalr1.cc (stack_symbol_type::stack_symbol_type): Record that
the source was emptied.
(stack_symbol_type::operator=): Likewise.
* tests/c++.at (C++ Variant-based Symbols Unit Tests): Force the stack
to be resized.  Check its content.

2018-10-18 07:15:30 +02:00

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