Hi, While working on a project with a messy structure and a reliance on #pragma once, I ran into this issue.
Essentially, TCC considers the following to be different files for the purposes of respecting #pragma once: #include "test.h" #include "./test.h" #include "foo/../test.h" // In subdir/test2.h: #include "../test.h" The result is that test.h is included repeatedly despite using #pragma once. Of course, that feature is non-standard and well-known to be potentially troublesome. But it's used widely enough that I think this is worth fixing. I've attached a test case. There's an interesting difference in behaviour between Windows and Linux when a non-existent path is involved, but the overall issue applies regardless of platform.
<<attachment: tcc_include_path_issue_testcase.zip>>
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