Understanding compiler options differences in visual studio 2010 and strict C++ compliance - c++

Question

I am grading some homework C++ code and a student used a non-standard constructor for a vector of vectors:
vector<vector<double> > A(rows, cols);
where rows and cols are unsigned integers. The way we taught it in class is
vector<vector<double> > A(rows, vector<double>(cols));
following the fill constructor (2 in http://www.cplusplus.com/reference/vector/vector/vector/)
I am using a batch file to compile all students codes with the command line
cl /O2 /EHsc /Tp <filename>
and this command threw this error at the student line mentioned above:
error C2664: 'std::vector<std::vector<double,std::allocator<_Ty>>,std::allocator<std::vector<_Ty,std::allocator<_Ty>>>>::vector(std::initializer_list<std::vector<_Ty,std::allocator<_Ty>>>,const std::allocator<std::vector<_Ty,std::allocator<_Ty>>> &)' : cannot convert argument 2 from 'unsigned int' to 'const std::vector<double,std::allocator<_Ty>> &'
with
[
_Ty=double
]
Reason: cannot convert from 'unsigned int' to 'const std::vector<double,std::allocator<_Ty>>'
with
[
_Ty=double
]
Constructor for class 'std::vector<double,std::allocator<_Ty>>' is declared 'explicit'
with
[
_Ty=double
]
But when I create a project and build it with the default parameters of MSVC 2010 it does not throw neither a warning nor an error there.
I am trying to learn what compiler option is responsible for allowing it go through without a warning in the IDE, and what I would switch it off.
I tried finding an answer in http://msdn.microsoft.com/en-us/library/2tb15w2z(v=vs.100).aspx, but I couldn't an answer.
EDIT: I think this might be helpful to others: thanks to the comments I understand now the constructor called in the IDE is the range constructor (#3 in the link above).
Here's my particular question: both methods use the same compiler with different options (one the default from the IDE, the other one is stated above). The batch file throws an error, the IDE doesn't. I need help identifying what to change in the IDE's command line arguments so that it throws the error.
UPDATE: I included the error message.
UPDATE 2: It turns out the script was being run in a computer with MSVC 2013 and that was the difference

Answer 1

Actually:
std::vector<std::vector<double> a( rows, columns );
is legal, or at least it was legal until C++11. It wasn't
intentionally legal, but the way the standard was worded, a
compiler was required to accept it. (I think C++11 fixed this.
Although it did so a bit too late, since doing so breaks
previously legal code.)
The rule is (or was) simple, if overload resolution on the
constructor results in the constructor
<template Iter>std::vector::vector( Iter begin, Iter end )
being chosen, and Iter deduces to an integral type, the code
must behave as if
std::vector::vector( static_cast<size_type>( begin ), static_cast<value_type>( end ) )
were called.

Answer 2

When you're compiling at the command line you are not using VS 2010.
Here's what I get from a VS 2010 command line compile:
C:\so-test>cl /O2 /EHsc /Tp test.cpp
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.
test.cpp
Microsoft (R) Incremental Linker Version 10.00.40219.01
Copyright (C) Microsoft Corporation. All rights reserved.
/out:test.exe
test.obj
I get your error message when I compile from the VS 2013 command line (I get a similar but slightly different message from the VS 2012 command line).
I suggest that you look at the version number displayed to verify what version of the MSVC compiler you're using at the command line.
VS 2010 is 16.00.xxxx (SP1 is 16.00.40219.01)
VS 2012 is 17.00.xxxx (Update 4 is 17.00.61030)
VS 2013 is 18.00.xxxx (Update 1 is 18.00.21005.1)