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Fix MSVC compilation error

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MSVC's `std::vector` requires its allocator to have copy constructor
from the same allocator kind, but templated over different type.
This commit is contained in:
Martin Hořeňovský 2017-04-25 19:54:22 +02:00
parent b245eaa7d1
commit 53864dee7b
1 changed files with 10 additions and 4 deletions
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14
projects/SelfTest/ToStringVector.cpp
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@ -27,8 +27,14 @@ namespace {
/* Minimal Allocator */ /* Minimal Allocator */
template<typename T> template<typename T>
struct minimal_allocator { struct minimal_allocator {
typedef T value_type; using value_type = T;
typedef std::size_t size_type; using size_type = std::size_t;
minimal_allocator() = default;
template <typename U>
minimal_allocator(const minimal_allocator<U>&) {}
T *allocate( size_type n ) { T *allocate( size_type n ) {
return static_cast<T *>( ::operator new( n * sizeof(T) ) ); return static_cast<T *>( ::operator new( n * sizeof(T) ) );
} }
@ -52,8 +58,8 @@ TEST_CASE( "vector<int,allocator> -> toString", "[toString][vector,allocator][c+
} }
TEST_CASE( "vec<vec<string,alloc>> -> toString", "[toString][vector,allocator][c++11][.]" ) { TEST_CASE( "vec<vec<string,alloc>> -> toString", "[toString][vector,allocator][c++11][.]" ) {
typedef std::vector<std::string,minimal_allocator<std::string> > inner; using inner = std::vector<std::string, minimal_allocator<std::string>>;
typedef std::vector<inner> vector; using vector = std::vector<inner>;
vector v; vector v;
REQUIRE( Catch::toString(v) == "{ }" ); REQUIRE( Catch::toString(v) == "{ }" );
v.push_back( inner { "hello" } ); v.push_back( inner { "hello" } );