[LLVMbugs] [Bug 4721] New: memory bugs and codegen crash with vlas

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4721

           Summary: memory bugs and codegen crash with vlas
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: LLVM Codegen
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: clattner at apple.com
                CC: llvmbugs at cs.uiuc.edu


This testcase:

void sum1(int rb) {
  typedef unsigned char imgrow[rb];
  typedef imgrow img[rb];

  const img *br;
  int y;

   (*br)[y];
}

Crashes codegen with an assert, and crashes -ast-print/-ast-dump with valgrind
errors about invalid reads.


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