[LLVMbugs] [Bug 9652] New: Regression between r129003 and r129068 - internal compiler error: Segmentation fault

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9652

           Summary: Regression between r129003 and r129068 - internal
                    compiler error: Segmentation fault
           Product: dragonegg
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: New Bugs
        AssignedTo: baldrick at free.fr
        ReportedBy: maemarcus at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Tracked down a DragonEgg failure with the following simplified test case:

      SUBROUTINE FOO()

      DIMENSION IBUFR(4)
      CHARACTER*4 VALUE

      VALUE=CHAR(IBUFR(1))//CHAR(IBUFR(2))//
     1      CHAR(IBUFR(3))//CHAR(IBUFR(4))

      END

r129003
=======

dragonegg-gfortran-orig
-fplugin=/home/dmikushin/opt/llvm/dragonegg/lib64/dragonegg.so -c foo.F

(OK, created object)

r129068
=======

dragonegg-gfortran-orig
-fplugin=/home/dmikushin/opt/llvm/dragonegg/lib64/dragonegg.so -c foo.F 
*** WARNING *** there are active plugins, do not report this as a bug unless
you can reproduce it without enabling any plugins.
Event                            | Plugins
PLUGIN_FINISH_UNIT               | dragonegg
PLUGIN_FINISH                    | dragonegg
PLUGIN_START_UNIT                | dragonegg
buexs0.F: In function ‘foo_’:
buexs0.F:10:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [all] Error 1

Interestingly, if we change name of the variable IBUFR to some other, for
example BUFFER, a different compile time error occurs.

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