[dmd-internals] Auto tester failing sporadically on Darwin_32

[Steven Schveighoffer]

I noticed a few cases, such as:

https://d.puremagic.com/test-results/pull.ghtml?projectid=1&runid=952942

https://d.puremagic.com/test-results/pull.ghtml?projectid=1&runid=952588

Where the Darwin_32 test fails with something like this:

sh: line 1: 74199 Killed: 9               ../src/dmd -m64 -Irunnable -O -inline -odgenerated/runnable -ofgenerated/runnable/test10573_3 runnable/test10573.d runnable/imports/test10573a.d > generated/7af2555e52d1e12b2bc70ce52041d51bf1420a3686fe0ade35df6cfbe03b90b0 2>&1
 ... runnable/test10573.d           (-O -inline -release)
Test failed.  The logged output:
../src/dmd -m64 -Irunnable   -odgenerated/runnable -ofgenerated/runnable/test10573_0 runnable/test10573.d runnable/imports/test10573a.d
generated/runnable/test10573_0

../src/dmd -m64 -Irunnable  -O -odgenerated/runnable -ofgenerated/runnable/test10573_1 runnable/test10573.d runnable/imports/test10573a.d
generated/runnable/test10573_1

../src/dmd -m64 -Irunnable  -inline -odgenerated/runnable -ofgenerated/runnable/test10573_2 runnable/test10573.d runnable/imports/test10573a.d
generated/runnable/test10573_2

../src/dmd -m64 -Irunnable  -O -inline -odgenerated/runnable -ofgenerated/runnable/test10573_3 runnable/test10573.d runnable/imports/test10573a.d


==============================
Test failed: expected rc == 0, exited with rc == 137

I suspect, due to the passing tests for every other platform and every other test, and the nature of the failure ("Killed: 9"), that this is some sort of sporadic condition specific to this platform, not the code. Note, the tests failed in the above two mentioned runs are not the same test that failed.

I have not checked into what the auto-tester is actually testing in those tests, but I suspect it has nothing to do with the code that was changed in the PR.

-Steve