Use C++1z in tst_basic

To avoid many warnings with gcc 7 about the noexcept changes

.travis.yml

@@ -29,8 +29,8 @@ matrix:
         - env: QT_VERSION=55 QT_SOURCE=551 GCC_VERSION=5
         - env: QT_VERSION=56 QT_SOURCE=563 GCC_VERSION=6
         - env: QT_VERSION=58 QT_SOURCE=58 GCC_VERSION=6
-        - env: QT_VERSION=59 QT_SOURCE=593 GCC_VERSION=7 CXXFLAGS=-Wno-noexcept-type
-        - env: QT_VERSION=510 QT_SOURCE=5.10.0 GCC_VERSION=7 CXXFLAGS=-Wno-noexcept-type
+        - env: QT_VERSION=59 QT_SOURCE=593 GCC_VERSION=7
+        - env: QT_VERSION=510 QT_SOURCE=5.10.0 GCC_VERSION=7
 
         # Clang builds.
         - env: QT_VERSION=56 QT_SOURCE=563 CLANG_VERSION=3.8
@@ -66,6 +66,6 @@ before_script:
 script:
     - which qmake
     - qmake --version
-    - qmake -r QMAKE_CXXFLAGS+=$CXXFLAGS
+    - qmake -r
     - make -j 2
     - make check

tests/basic/basic.pro

@@ -3,3 +3,4 @@ TARGET = tst_basic
 QT = core testlib
 include(../../src/verdigris.pri)
 SOURCES = tst_basic.cpp
+CONFIG += c++1z