June 01, 2020
https://issues.dlang.org/show_bug.cgi?id=20891

          Issue ID: 20891
           Summary: Android GC signals set inappropriately
           Product: D
           Version: D2
          Hardware: All
                OS: Other
            Status: NEW
          Severity: minor
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: alphaglosined@gmail.com

During initialization of the runtime, threading will set a couple of signals on POSIX for handling of suspension and resuming.

On Android it will override whatever signals the end developer may have set.

Because the setting of what signals to use must have been set prior to the function call and cannot be changed afterwards, overriding the global pre-existing values (which could be zero or the user specified ones), you are forced to use whatever druntime chooses interfering with other libraries.

Function in question: thread_init
Function to override (by user): thread_setGCSignals

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