[LLVMbugs] [Bug 11889] New: 'bind' doesn't fail when called with non-callable first argument

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Jan 30 13:59:00 PST 2012


             Bug #: 11889
           Summary: 'bind' doesn't fail when called with non-callable
                    first argument
           Product: libc++
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
        AssignedTo: hhinnant at apple.com
        ReportedBy: hivemaster at hotmail.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

'std::bind(1,2)' should fail, but doesn't. (r149243)

The standard states the following´ for 'std::bind' at

template<class F, class... BoundArgs>
unspecified bind(F&& f, BoundArgs&&... bound_args);

Requires: [...] INVOKE(fd, w1, w2, ..., wN) (20.8.2) shall be a valid
expression for some values w1, w2, ..., wN, where N == sizeof...(bound_args).

And at 20.8.2/1, 'INVOKE(f, t1, t2, ..., tN)' is defined as 'f(t1, t2, ...,
tN)' when 'f' is not a member pointer. Clearly, the expression '1(2)' isn't
valid, and as such the 'std::bind' call should fail (in whatever way).

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