commit 20c841bac102e777a3a1723724fa5d31018fefcc
from: Russ Cox <rsc@swtch.com>
date: Tue May 19 02:35:17 2020 UTC

rc: avoid problematic internal names "var", "thread"

For AIX.

commit - dea4dbdba6e8a4652e682627dce50503bca5c4b4
commit + 20c841bac102e777a3a1723724fa5d31018fefcc
blob - 46ff95106c9ab1f9e12e49dd0dd99b2f607d4fe0
blob + 2fd6758b671838c3c9d23aff659bf32221ab52bd
--- src/cmd/rc/rc.h
+++ src/cmd/rc/rc.h
@@ -33,6 +33,12 @@
 #undef pipe	/* so that /dev/fd works */
 #define searchpath rcsearchpath	/* avoid new libc function */
 
+/* some systems define a global "var", "thread" */
+#undef var
+#define var rcvar
+#undef thread
+#define thread rcthread
+
 typedef struct tree tree;
 typedef struct word word;
 typedef struct io io;