Don't default older GCC's to C++17, but C++14 or C++11 instead
llvm-svn: 292607
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@ -423,6 +423,15 @@ class Configuration(object):
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if not std:
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# Choose the newest possible language dialect if none is given.
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possible_stds = ['c++1z', 'c++14', 'c++11', 'c++03']
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if self.cxx.type == 'gcc':
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maj_v, _, _ = self.cxx.version
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maj_v = int(maj_v)
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if maj_v < 7:
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possible_stds.remove('c++1z')
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# FIXME: How many C++14 tests actually fail under GCC 5 and 6?
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# Should we XFAIL them individually instead?
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if maj_v <= 6:
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possible_stds.remove('c++14')
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for s in possible_stds:
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if self.cxx.hasCompileFlag('-std=%s' % s):
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std = s
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