Growing stacks in C++

[Paul Hilfinger]

The Bison documentation says that due to technical differences between C
and C++, a C++ compiler wouldn't be able to compile or properly execute
(not clear which) a Bison C program that tried to grow the parser
stack.  What exactly is this technical difference?  Producing a C++
program using the C skeleton (not lalr1.cc), tweaking the generated code
to expand the parser stack regardless of __cplusplus, and compiling with
C++ works in at least simple cases.  What's the problem?

Thanks.

Paul Hilfinger