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Fix undefined behavior

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62229 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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kazu 2018-02-05 12:34:37 +00:00
parent 5a68bd7f00
commit 1ddaa1ce09
1 changed files with 2 additions and 0 deletions
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2
tool/m4/ruby_check_va_copy.m4
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@ -14,9 +14,11 @@ conftest(int n, ...)
va_start(ap, n);
CONFTEST_VA_COPY(ap2, ap);
for (i = 0; i < n; i++) if ((int)va_arg(ap, int) != n - i - 1) abort();
va_end(ap);
CONFTEST_VA_COPY(ap, ap2);
for (i = 0; i < n; i++) if ((int)va_arg(ap, int) != n - i - 1) abort();
va_end(ap);
va_end(ap2);
}
int
main()