[PATCH] PR fortran/95091 - Buffer overflows with submodules and long symbols

[Harald Anlauf]

There's another case of buffer overflows when F2008 submodules are used.
Buffer sizes are further increased, and checks for overflow are put into
place.

OK for master?

I intend to backport to 10 and 9, since I believe the patch is safe.

Thanks,
Harald


PR fortran/95091 - Buffer overflows with submodules and long symbols

With submodules, name mangling results in long internal symbols.  This
requires adjustment of the sizes of temporaries to avoid buffer overflows.

2020-06-06  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
	PR fortran/95091
	* class.c (get_unique_type_string, gfc_hash_value): Enlarge
	buffers, and check whether the strings returned by
	get_unique_type_string() fit.

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