[LLVMbugs] [Bug 13024] New: std::map < int, int >, int >, calling operator [] results in assert

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13024

             Bug #: 13024
           Summary: std::map < int, int >, int >, calling operator []
                    results in assert
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: other
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: dillon.sharlet at intel.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 8680
  --> http://llvm.org/bugs/attachment.cgi?id=8680
Test.cpp compiled with -E to get the preprocessor output.

Here is a simple reproducer cpp file that exhibits the same issue as the
program I am trying to compile:


#include <map>

int test(int x, int y)
{
   std::map < std::pair < int, int >, int > test;

   return test[std::make_pair(x, y)];
}


When compiling this program with Clang 3.1/MinGW 4.6.2 on windows, the assert
in the following function fails (SemaDecl.cpp line 805):


void Sema::PushDeclContext(Scope *S, DeclContext *DC) {
  assert(getContainingDC(DC) == CurContext &&
      "The next DeclContext should be lexically contained in the current
one.");
  CurContext = DC;
  S->setEntity(DC);
}


Additionally, the program compiled successfully on Clang 3.0 with the same
environment (MinGW 4.6.2 headers on Windows). 

Attached is Test.cpp compiled with -E.

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