events - Fix overflow of timeout on STM32F4 #3550
Merged
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For equeue_sema_wait, -1 is used to indicate an infinite wait. This wasn't handled in the nonrtos implementation and caused undefined/weird behaviour after an overflow on integer multiplication.
On most boards, the infinite wait would return after ~50 days, on the STM32F4 the timeout killed all other timeouts for some reason.
tested on NUCLEO_F401RE
should resolve #3543
mirrored on ARMmbed/mbed-events#27
cc @DavidPowell