[LLVMbugs] [Bug 6286] Provide more informative diagnostic for failed qualification conversions

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6286

Kaelyn Uhrain <rikka at google.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |rikka at google.com
         Resolution|                            |FIXED

--- Comment #1 from Kaelyn Uhrain <rikka at google.com> 2012-06-22 16:46:50 CDT ---
clang 3.1 gives a more detailed message for the original example, and it is a
warning instead of an error:

$ ./bin/clang -fsyntax-only t.cc
t.cc:1:48: warning: comparison of distinct pointer types ('void **' and 'const
void **') uses
      non-standard composite pointer type 'const void *const *'
void test(void **a, void const **b) { (void)(a == b); }
                                             ~ ^  ~
1 warning generated.


The message is a tad cryptic in this case, but the key point is still rather
clear: the comparison between the two different pointer types violates the C++
standard.

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