================
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -verify=c23 -std=c23 %s
+// RUN: %clang_cc1 -verify=c17 -std=c17 %s
----------------
AaronBallman wrote:
I don't think we should remove the test for stdatomic,h, that's an important
property for us to test and may be papering over a bug here. The only situation
we should be getting the system header is:
```
#if __STDC_HOSTED__ && \
__has_include_next(<stdatomic.h>) && \
(!defined(_MSC_VER) || (defined(__cplusplus) && __cplusplus >= 202002L))
# include_next <stdatomic.h>
#else
...
so `-ffreestanding` really should only include our header. What do you get from
`-E` on that machine? Are we actually including the system header anyway, or
did we mess up our header somehow?
```
https://github.com/llvm/llvm-project/pull/97208
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