Newest release header v2.10.1 won't compile

[maryamshalaby]

When compiling using MinGW following error message shows

In file included from try.cpp:2:0:
catch.hpp: In member function 'virtual std::__cxx11::string Catch::Matchers::Floating::WithinUlpsMatcher::describe() const':
catch.hpp:11434:76: error: no matching function for call to 'step(float, double, const uint64_t&)'
             write(ret, step(static_cast<float>(m_target), -INFINITY, m_ulps));
                                                                            ^
catch.hpp:11338:4: note: candidate: template<class FP> FP Catch::{anonymous}::step(FP, FP, uint64_t)
 FP step(FP start, FP direction, uint64_t steps) {
    ^~~~
catch.hpp:11338:4: note:   template argument deduction/substitution failed:
catch.hpp:11434:76: note:   deduced conflicting types for parameter 'FP' ('float' and 'double')
             write(ret, step(static_cast<float>(m_target), -INFINITY, m_ulps));
                                                                            ^
catch.hpp:11436:76: error: no matching function for call to 'step(float, double, const uint64_t&)'
             write(ret, step(static_cast<float>(m_target),  INFINITY, m_ulps));
                                                                            ^
catch.hpp:11338:4: note: candidate: template<class FP> FP Catch::{anonymous}::step(FP, FP, uint64_t)
 FP step(FP start, FP direction, uint64_t steps) {
    ^~~~
catch.hpp:11338:4: note:   template argument deduction/substitution failed:
catch.hpp:11436:76: note:   deduced conflicting types for parameter 'FP' ('float' and 'double')
             write(ret, step(static_cast<float>(m_target),  INFINITY, m_ulps));
                                                                            ^ 

Tried compiling earlier release, v2.10.0, smooth sailing.

Reproduction steps
Code example (same one in tutorial)
#define CATCH_CONFIG_MAIN // This tells Catch to provide a main() - only do this in one cpp file
#include "catch.hpp"

unsigned int Factorial( unsigned int number ) {
return number <= 1 ? number : Factorial(number-1)*number;
}

TEST_CASE( "Factorials are computed", "[factorial]" ) {
REQUIRE( Factorial(1) == 1 );
REQUIRE( Factorial(2) == 2 );
REQUIRE( Factorial(3) == 6 );
REQUIRE( Factorial(10) == 3628800 );
}

in CLI -->>> g++ trial.cpp

Platform information:

• OS: Windows 10
• Compiler+version: gcc version 6.3.0 (MinGW.org GCC-6.3.0-1)
• Target: mingw32
• Thread model: win32
• Catch version: v2.10.1

[horenmar]

The error means that your stdlib is non-conforming and INFINITY is a double instead of the float it is supposed to be. Luckily it is not too hard to work around.