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Backport !3547 “glib/gfileutils.c: use 64 bits for value in get_tmp_file()” to glib-2-76

Philip Withnall requested to merge pwithnall/glib:backport-3547-fileutils-y2038-glib-2-76 into glib-2-76

On 32 bit systems 'long' value will overflow in 2038 and become negative. As it is used to index into letters array, and % operation preserves signs, data corruption will then occur.

Signed-off-by: Alexander Kanavin alex@linutronix.de

Trivial backport of !3547 (merged) to glib-2-76.

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