pythongh-110429: Fix race condition in "make regen-all" (pythonGH-110433)

vstinner · miss-islington · commit 73825041d65f · 2023-10-05T20:26:43.000Z
"make regen-pegen" now creates a temporary file called "parser.c.new" instead of "parser.new.c". Previously, if "make clinic" was run in parallel with "make regen-all", clinic may try but fail to open "parser.new.c" if the temporay file was removed in the meanwhile. (cherry picked from commit fb6c4ed) Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Makefile.pre.in b/Makefile.pre.in
@@ -1396,8 +1396,8 @@ regen-pegen:
 	PYTHONPATH=$(srcdir)/Tools/peg_generator $(PYTHON_FOR_REGEN) -m pegen -q c \
 		$(srcdir)/Grammar/python.gram \
 		$(srcdir)/Grammar/Tokens \
-		-o $(srcdir)/Parser/parser.new.c
-	$(UPDATE_FILE) $(srcdir)/Parser/parser.c $(srcdir)/Parser/parser.new.c
+		-o $(srcdir)/Parser/parser.c.new
+	$(UPDATE_FILE) $(srcdir)/Parser/parser.c $(srcdir)/Parser/parser.c.new
 
 .PHONY: regen-ast
 regen-ast:
