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See ‘ --enable-alloca ’ choices in Build Options , for how to address this. In new enough versions of GCC, ‘ -fstack-check ’ may be able to ensure an
overflow is recognised by the system before too much damage is done, or
‘ -fstack-limit-symbol ’ or ‘ -fstack-limit-register ’ may be able to
add checking if the system itself doesn’t do any (see Options for Code Generation in Using the GNU Compiler Collection (GCC) ).