On Tue, 19 Sep 2023 14:44:26 GMT, Leo Korinth <lkori...@openjdk.org> wrote:

> `make test` outputs `TEST SUCCESS` after unsuccessful exit of JVM. One 
> example is bad VM flags.
> 
> I now have a reproducer for something that has puzzled me before (and most of 
> my co-workers I think):
> 
> // first test uses -XX:+UseG1GC second and third uses -XX:+UseG1GCC (sic)
> `make clean run-test 
> TEST=open/test/hotspot/jtreg/gc/arguments/TestCompressedClassFlags.java 
> JTREG='JAVA_OPTIONS=-XX:+UseG1GC'` -> OK
> `make run-test 
> TEST=open/test/hotspot/jtreg/gc/arguments/TestCompressedClassFlags.java 
> JTREG='JAVA_OPTIONS=-XX:+UseG1GCC'` -> OK
> `rm -rf 
> test-results/jtreg_open_test_hotspot_jtreg_gc_arguments_TestCompressedClassFlags_java`
> `make run-test 
> TEST=open/test/hotspot/jtreg/gc/arguments/TestCompressedClassFlags.java 
> JTREG='JAVA_OPTIONS=-XX:+UseG1GCC'` -> FAIL
> 
> The problem is that the success of the first test run seems to be cached and 
> the second test-run seems to reuse the result of the first run.
> 
> This seems to fix the problem:
> 
> diff --git a/make/RunTests.gmk b/make/RunTests.gmk
> index 25dcdbb083d..489c3f839f8 100644
> --- a/make/RunTests.gmk
> +++ b/make/RunTests.gmk
> @@ -864,6 +864,7 @@ define SetupRunJtregTestBody
> 
>    clean-workdir-$1:
>         $$(RM) -r $$($1_TEST_SUPPORT_DIR)
> + $$(RM) -r $$($1_TEST_RESULTS_DIR)
> 
>    $1_COMMAND_LINE := \
>        $$(JAVA) $$($1_JTREG_LAUNCHER_OPTIONS) \
> ``` 
> I have started tier 1-5 testing, but they are not completed yet. I would also 
> like to know if this change cooperates nicely with RETRY_COUNT and 
> REPEAT_COUNT. To me, it seems they both should be able to be more or less 
> stateless, i.e. they ought to be able to quit on failure or success without a 
> mutating directory, but It would be good if I could get that confirmed 
> (because I have a hard time understanding the make files).

Also, could you please rename the target `clean-outputdirs-$1`?

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PR Comment: https://git.openjdk.org/jdk/pull/15820#issuecomment-1725900727

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