From: Victor Stinner <vstinner@python.org>
Date: Thu, 5 Oct 2023 20:26:37 +0000 (+0200)
Subject: gh-110429: Fix race condition in "make regen-all" (#110433)
X-Git-Tag: v3.13.0a1~115
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fb6c4ed2bbb2a867d5f0b9a94656e4714be5d9c2;p=thirdparty%2FPython%2Fcpython.git

gh-110429: Fix race condition in "make regen-all" (#110433)

"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.
---

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 97eb767b8fcd..f1f5c8557e7f 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1399,8 +1399,8 @@ 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: