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https://issues.apache.org/jira/browse/PROTON-2773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17777260#comment-17777260
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ASF GitHub Bot commented on PROTON-2773:
----------------------------------------
astitcher commented on code in PR #408:
URL: https://github.com/apache/qpid-proton/pull/408#discussion_r1365513224
##########
c/include/proton/annotations.h:
##########
@@ -90,4 +90,24 @@
#endif
#endif
+// fallthrough
+#if defined __cplusplus && defined __has_cpp_attribute
+ #if __has_cpp_attribute(fallthrough) && __cplusplus >=
__has_cpp_attribute(fallthrough)
+ #define PN_FALLTHROUGH [[fallthrough]]
+ #endif
+#endif
+#if !defined PN_FALLTHROUGH && defined __STDC_VERSION__ && defined
__has_c_attribute
Review Comment:
Could be `#elif`
> [c] Add various compiler diagnostic helper macros
> -------------------------------------------------
>
> Key: PROTON-2773
> URL: https://issues.apache.org/jira/browse/PROTON-2773
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: proton-c-0.39.0
> Reporter: Jiri Daněk
> Assignee: Jiri Daněk
> Priority: Major
> Fix For: proton-c-0.40.0
>
>
> This includes the printf format string verification from PROTON-2772,
> fallthrough annotations, and macros for compiler diagnostic handling pragmas.
> If any other improvements are thought of, they can be merged as part of this,
> or new issue can be created if a Proton release happens in the meantime.
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