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  • Committer: mmach
  • Date: 2021-04-14 13:54:24 UTC
  • Revision ID: netbit73@gmail.com-20210414135424-8x3fxf716zs4wflb
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shell/ash_test/ash-signals/return_in_trap1.tests
 
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a() {
 
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        (exit 2)
 
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        echo a:$?
 
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        (kill -s USR1 $$; echo b:$?; exit 3)
 
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        echo c:$?       # does not execute
 
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        (exit 4)
 
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}
 
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trap "echo Trap; return" USR1
 
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a
 
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echo d:$?
 
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# It's debatable what is the correct value above.
 
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# Does 'return' in trap see $? == 2 or $? == 3?
 
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# IOW: after (kill..), does shell first wait for its completion
 
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# and sets $?, then checks pending signals and runs a trap handler,
 
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# or does it first check pending signals and runs handler?
 
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# hush does the former, and prints 3.