[Issue 8563] New: Exception segfault

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8563

           Summary: Exception segfault
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: daniel350 at bigpond.com


--- Comment #0 from Daniel Cousens <daniel350 at bigpond.com> 2012-08-20 03:12:35 PDT ---
http://dpaste.dzfl.pl/08d60e83

import std.exception : assertThrown;
import std.file : dirEntries, SpanMode;

// segfault does not occur with -O command line argument (exception is thrown
as expected with -O)
void main() {
      assertThrown(dirEntries("test", SpanMode.breadth)); // assert does not
fail, as expected (ie, exception was thrown)
      func("test");
}

void func(string suicide_variable) { // must be in a seperate function
      auto ax = suicide_variable; // uncomment this for a segfault in the
following statement
                                  // not clear as to why, can't yet reproduce
with other unpredictable exceptions (AFAIK)

      foreach(s; dirEntries("test", SpanMode.breadth)) {} // exception is
expected, not a segfault
}

----------

I tried to produce this behaviour for other functions (ie, without the
dirEntries call), but I could not get at it; but this is all still very much
undefined behaviour.

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