clang-1/test/Preprocessor/header_lookup1.c

зеркало из https://github.com/microsoft/clang-1.git
// RUN: clang -I /usr/include %s -E | grep 'stdio.h.*3.*4'
#include <stdio.h>
	`// RUN: clang -I /usr/include %s -E \| grep 'stdio.h.3.4'`
	`#include <stdio.h>`