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// RUN: %clang %s -o %t && %run %t 2>&1
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#include <assert.h>
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#include <stdlib.h>
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int main(int argc, char **argv) {
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char buff[10];
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wchar_t x = L'a';
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wctomb(NULL, x);
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int res = wctomb(buff, x);
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assert(res == 1);
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assert(buff[0] == 'a');
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return 0;
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}
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