With the transition to Sphinx 3, new warnings were caused by
automarkup, exposing bugs in the name matching.
When automarkup parsed a text like "struct struct" in the documentation,
it tried to cross-reference to a "struct" symbol, which is recognized as
a C reserved word by Sphinx 3, generating a warning.
Add some C reserved words (only the ones that were causing warnings) to
a list and skip them while trying to cross-reference.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxxx>
---
Documentation/sphinx/automarkup.py | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/Documentation/sphinx/automarkup.py b/Documentation/sphinx/automarkup.py
index 43dd9025fc77..1cc3a2cf2a88 100644
--- a/Documentation/sphinx/automarkup.py
+++ b/Documentation/sphinx/automarkup.py
@@ -45,6 +45,12 @@ RE_typedef = re.compile(r'\b(typedef)\s+([a-zA-Z_]\w+)', flags=re.ASCII)
#
RE_doc = re.compile(r'\bDocumentation(/[\w\-_/]+)(\.\w+)*')
+#
+# Reserved C words that we should skip when cross-referencing
+#
+Skipnames = [ 'for', 'if', 'register', 'sizeof', 'struct', 'unsigned' ]
+
+
#
# Many places in the docs refer to common system calls. It is
# pointless to try to cross-reference them and, as has been known
@@ -133,7 +139,8 @@ def markup_c_ref(docname, app, match):
target = match.group(2)
target_text = nodes.Text(match.group(0))
xref = None
- if not (match.re == RE_function and target in Skipfuncs):
+ if not ((match.re == RE_function and target in Skipfuncs)
+ or (target in Skipnames)):
lit_text = nodes.literal(classes=['xref', 'c', class_str[match.re]])
lit_text += target_text
pxref = addnodes.pending_xref('', refdomain = 'c',
--
2.28.0
