[LLVMbugs] [Bug 21949] New: [fuzz] UNREACHABLE executed at tools/clang/lib/AST/ASTContext.cpp:1509

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21949

            Bug ID: 21949
           Summary: [fuzz] UNREACHABLE executed at
                    tools/clang/lib/AST/ASTContext.cpp:1509
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sami.liedes at iki.fi
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Fuzzing discovered that the test case given below, when given as input to

  clang -fno-crash-diagnostics -std=c++11 -xc++ -c -emit-llvm

causes UNREACHABLE to be executed:

--------------------------------------------------
template <T> a() {
    asm ("":"=r" (a
--------------------------------------------------

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