[LLVMbugs] [Bug 12746] New: Assertion failure with nested blocks/lambdas

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun May 6 08:49:46 PDT 2012


             Bug #: 12746
           Summary: Assertion failure with nested blocks/lambdas
           Product: clang
           Version: trunk
          Platform: Macintosh
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: chmeeedalf at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 8497
  --> http://llvm.org/bugs/attachment.cgi?id=8497
Test file that demonstrates the problem

When compiling the attached file (c++11, blocks), I see the following assertion

Assertion failed: (isa<BlockDecl>(CurCodeDecl) && E->refersToEnclosingLocal()),
function EmitDeclRefLValue, file CGExpr.cpp, line 1578.

I tracked it down to the nested lambda accessing any variable in function
scope, in this case argv[].  Changing the capture to '=' instead of '&' doesn't
change anything.

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