RFR: 8256594: Unexpected warning: SIGSEGV handler flags expected:SA_RESTART|SA_SIGINFO found:SA_RESTART|SA_SIGINFO
David Holmes
dholmes at openjdk.java.net
Thu Nov 19 07:50:09 UTC 2020
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.
-------------
Commit messages:
- 8256594: Unexpected warning: SIGSEGV handler flags expected:SA_RESTART|SA_SIGINFO found:SA_RESTART|SA_SIGINFO
Changes: https://git.openjdk.java.net/jdk/pull/1309/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1309&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8256594
Stats: 31 lines in 1 file changed: 28 ins; 0 del; 3 mod
Patch: https://git.openjdk.java.net/jdk/pull/1309.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/1309/head:pull/1309
PR: https://git.openjdk.java.net/jdk/pull/1309
More information about the hotspot-runtime-dev
mailing list