[GHC] #8619: Support anonymous string literals in C-- (OR) give better ASSERT failure messages in C--

[GHC]

#8619: Support anonymous string literals in C-- (OR) give better ASSERT failure
messages in C--
-------------------------------------+-------------------------------------
        Reporter:  ezyang            |                Owner:  (none)
            Type:  feature request   |               Status:  patch
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4862
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"008ea12dd93b9f9104f0b532b278a31b719bafb8/ghc"
 008ea12d/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="008ea12dd93b9f9104f0b532b278a31b719bafb8"
 Use __FILE__ for Cmm assertion locations, fix #8619

 It seems like we currently support string literals in Cmm, so we can use
 __LINE__ CPP macro in assertion macros. This improves error messages
 that previously looked like

     ASSERTION FAILED: file (null), line 1302

 (null) part now shows the actual file name.

 Also inline some single-use string literals in PrimOps.cmm.

 Reviewers: bgamari, simonmar, erikd

 Reviewed By: bgamari

 Subscribers: rwbarton, thomie, carter

 Differential Revision: https://phabricator.haskell.org/D4862
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8619#comment:9>
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