* src/emacs-module.c: Add an additional requirement for API changes.

3d30b651 · Philipp Stephani · 51595f53 · 3d30b651
Commit 3d30b651 authored Apr 23, 2019 by Philipp Stephani
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src/emacs-module.c src/emacs-module.c +3 -0

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--- a/src/emacs-module.c
+++ b/src/emacs-module.c
@@ -32,6 +32,9 @@ If you want to change the module API, please abide to the following

 - Don't change the types of structure fields.

+- Likewise, the presence, order, and type of structure fields may not
+  depend on preprocessor macros.
+
 - Add structure fields only at the end of structures.

 - For every Emacs major version there is a new fragment file