[GHC] #12870: Allow completely disabling +RTS options parsing

[GHC]

#12870: Allow completely disabling +RTS options parsing
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        Reporter:  nh2               |                Owner:  AndreasK
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3740
       Wiki Page:                    |
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Comment (by AndreasK):

 Replying to [comment:8 alpmestan]:
 > I'm seeing quite a few failures related to the `T12870*` tests in a run
 of `./validate --slow` with master from yesterday.
 >
 > First, _all_ those tests fail with the `ghci` way, because `ghci`
 doesn't see that those modules are declared as `module Main where ...` and
 have a `main` function, and reports an error about this.
 >

 > I'm also not sure what `-rtsopts=ignoreAll` is about, I don't see
 anything being ignored, only some more options being given to the program
 and reported. This makes it hard to expect the same output from a test
 executed under different ways.

 I didn't test these using the slow run when I wrote these tests.
 https://phabricator.haskell.org/D4486 should fix the tests.

 Thanks for reporting this.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12870#comment:9>
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