v1.9.0

Improvements and minor changes

• Catch no longer attempts to ensure the exception type passed by user in REQUIRE_THROWS_AS is a constant reference.
  • It was causing trouble when REQUIRE_THROWS_AS was used inside templated functions
  • This actually reverts changes made in v1.7.2
• Catch's Version struct should no longer be double freed when multiple instances of Catch tests are loaded into single program (#858)
  • It is now a static variable in an inline function instead of being an externed struct.
• Attempt to register invalid tag or tag alias now throws instead of calling exit().
  • Because this happen before entering main, it still aborts execution
  • Further improvements to this are coming
• CATCH_CONFIG_FAST_COMPILE now speeds-up compilation of REQUIRE* assertions by further ~15%.
  • The trade-off is disabling translation of unexpected exceptions into text.
• When Catch is compiled using C++11, Approx is now constructible with anything that can be explicitly converted to double.
• Captured messages are now printed on unexpected exceptions

Fixes:

• Clang's -Wexit-time-destructors should be suppressed for Catch's internals
• GCC's -Wparentheses is now suppressed for all TU's that include catch.hpp.
  • This is functionally a revert of changes made in 1.8.0, where we tried using _Pragma based suppression. This should have kept the suppression local to Catch's assertions, but bugs in GCC's handling of _Pragmas in C++ mode meant that it did not always work.
• You can now tell Catch to use C++11-based check when checking whether a type can be streamed to output.
  • This fixes cases when an unstreamable type has streamable private base (#877)
  • Details can be found in documentation

Other notes:

• We have added VS 2017 to our CI
• Work on Catch 2 should start soon