positional-format-strings: suppress -Wformat-non-iso only for clang
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#include <stdio.h>
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/* suppress "warning: positional arguments are not supported by ISO C" */
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#ifdef __clang__
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#pragma GCC diagnostic ignored "-Wformat-non-iso"
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#endif
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int main(void) {
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printf("%3$3.2f %2$s %1$s\n", "One", "Two", 3.0);
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