[RFA/HPUX] somread.c: avoid stack overflow

[Joel Brobecker <brobecker at adacore dot com>]

Hello,

A customer of ours ran into a GDB crash that was caused by a stack
overflow. Their executables are very large, and it turned out when
we started debugging that the overflow happened during an alloca
besides which there already was a FIXME:.

We replace the calls to alloca by a call to xmalloc followed by
make_cleanup and the problem was gone.

2006-10-04  Joel Brobecker  <brobecker@adacore.com>

        * somread.c (som_symtab_read): Avoid using alloca for potentially
        large buffers.

Tested on pa-hpux, no regression.

OK to commit?

Thanks,
-- 
Joel

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