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Build /permissive- under VS2017

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Building with the (VS2017) /permissive- flag puts the compiler into
stricter standards-compliant mode.  It shouldn't cause the compiler to
work differently--it just disallows some non-conforming code--so should
be perfectly fine for the test suite under all VS2017 builds.

This commit also fixes one failure under non-permissive mode.
This commit is contained in:
Jason Rhinelander 2017-10-22 12:06:52 -03:00
parent 6a81dbbb1e
commit a582d6c7ff
2 changed files with 2 additions and 1 deletions
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1
.appveyor.yml
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@ -34,6 +34,7 @@ install:
if ($env:APPVEYOR_JOB_NAME -like "*Visual Studio 2017*") {
$env:CMAKE_GENERATOR = "Visual Studio 15 2017"
$env:CMAKE_INCLUDE_PATH = "C:\Libraries\boost_1_64_0"
$env:CXXFLAGS = "-permissive-"
} else {
$env:CMAKE_GENERATOR = "Visual Studio 14 2015"
}

2
include/pybind11/cast.h
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@ -1415,7 +1415,7 @@ protected:
bool load_value(value_and_holder &&v_h) {
if (v_h.holder_constructed()) {
value = v_h.value_ptr();
holder = v_h.holder<holder_type>();
holder = v_h.template holder<holder_type>();
return true;
} else {
throw cast_error("Unable to cast from non-held to held instance (T& to Holder<T>) "