[LLVMbugs] [Bug 15934] failed formatted input overwrites output value

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15934

Howard Hinnant <hhinnant at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #1 from Howard Hinnant <hhinnant at apple.com> ---
Thanks for the report.

libc++ has made no attempt to adhere to C++03, only to C++11.  And
unfortunately this detail is a specification that has changed between C++03 and
C++11.

The sentence you quote has been removed from this paragraph, which is now
22.4.2.1.2p1 [facet.num.get.virtuals].

Additionally in the same section Stage 3 now says in part:

The numeric value to be stored can be one of:

  * zero, if the conversion function fails to convert the entire field. 
    ios_base::failbit is assigned to err.

So libc++ does conform to C++11, but not C++03.  At this time we have no plans
to modify libc++ to strictly adhere to the C++03 standard.

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