[GHC] #11521: Test failures for the `profasm` way when BUILD_PROF_LIBS=YES

[GHC]

#11521: Test failures for the `profasm` way when BUILD_PROF_LIBS=YES
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        Reporter:  thomie            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Test Suite        |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by gridaphobe):

 * cc: simonmar (added)


Comment:

 This is expected, simonmar added the `-prof` stack traces to `error` as
 well (when available). The rationale is that `HasCallStack` will usually
 include call-sites close to the error, but not further up the chain, so we
 augment the trace with `-prof` if we can.

 The formatting is a bit unfortunate, but I think we have to distinguish
 the two sources somehow, it's not at all clear how to stitch them together
 in a consistent and sensible manner.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11521#comment:1>
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