[LLVMbugs] [Bug 10375] New: warning on delete object of incomplete type missing -W flag

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10375

           Summary: warning on delete object of incomplete type missing -W
                    flag
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: nlewycky at google.com
                CC: llvmbugs at cs.uiuc.edu


This warning needs a flag to control it:

  $ cat del.cc
  class Foo;

  void test(Foo *foo) {
    delete foo;
  }
  $ llvm/Debug+Asserts/bin/clang del.cc -Werror
  del.cc:4:3: error: deleting pointer to incomplete type 'Foo' may cause
undefined
        behaviour [-Werror]
    delete foo;
    ^      ~~~
  del.cc:1:7: note: forward declaration of 'Foo'
  class Foo;
        ^
  1 error generated.

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