[LLVMbugs] [Bug 12248] New: Lambda cannot change referenced local: "missing __block type specifier"

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12248

             Bug #: 12248
           Summary: Lambda cannot change referenced local: "missing
                    __block type specifier"
           Product: clang
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++0x
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jonathan.sauer at gmx.de
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


The following code fragment fails to compile with clang r152548:

static void bar()
{
  unsigned int result = 0;
  auto l = [&]() { ++result; };
}


This results in:

$ ~/LLVM/build/Release+Asserts/bin/clang++ -std=c++0x -v clang.cpp 
clang version 3.1 (trunk 152548)
Target: x86_64-apple-darwin10.8.0
Thread model: posix
[...]
clang.cpp:4:19: error: variable is not assignable (missing __block type
specifier)
        auto l = [&]() { ++result; };
                         ^ ~~~~~~
1 error generated.


This used to work in r151811.

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.