Integrated: 8256594: Unexpected warning: SIGSEGV handler flags expected:SA_RESTART|SA_SIGINFO found:SA_RESTART|SA_SIGINFO

[David Holmes]

On Thu, 19 Nov 2020 07:45:03 GMT, David Holmes <dholmes at openjdk.org> wrote:

> In the recent POSIX signal code cleanup (JDK-8253742) I misunderstood the role of the SIGNIFICANT_SIGNAL_MASK and removing its application causes -Xcheck:jni to report errors with the signal handler due to an unexpected bit in the sigaction.sa_flags field.
> 
> This fix restores the masking of that flag, for Linux only, and more clearly indicating what it is. I also augmented the flag printing code to show when an unexpected flag is present (and so avoid the mysterious "expected X found X" message).
> 
> See bug report for more details.
> 
> Thanks.

This pull request has now been integrated.

Changeset: fa240f22
Author:    David Holmes <dholmes at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/fa240f22
Stats:     33 lines in 1 file changed: 29 ins; 0 del; 4 mod

8256594: Unexpected warning: SIGSEGV handler flags expected:SA_RESTART|SA_SIGINFO found:SA_RESTART|SA_SIGINFO

Reviewed-by: stuefe, coleenp, dcubed

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PR: https://git.openjdk.java.net/jdk/pull/1309