[LLVMbugs] [Bug 15576] New: vector<T1, allocator<T2>> fails to compile

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15576

            Bug ID: 15576
           Summary: vector<T1, allocator<T2>> fails to compile
           Product: libc++
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: hhinnant at apple.com
          Reporter: tim at klingt.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

this code fails to compile with a rather obscure error message in v[0]:

```
#include <vector>

using namespace std;
vector<size_t, allocator<int>> v;

int main()
{
    v.push_back(0);
    v[0];
    return 0;
}
```

gcc/libstdc++ accept this code, though. iac, i'd suggest one of two
workarounds:

* rebind the allocator to the type of the vector
* add a static assertion that (Alloc::value_type == vector::value_type). this
should simplify finding this kind of issues where they appear

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