Module Name:    src
Committed By:   rillig
Date:           Mon Jan 24 20:49:55 UTC 2022

Modified Files:
        src/usr.bin/make: var.c

Log Message:
make: when expanding nested variables, check simple things first

No functional change, just a little performance improvement for
expressions that are not evaluated anyway but only parsed.


To generate a diff of this commit:
cvs rdiff -u -r1.1002 -r1.1003 src/usr.bin/make/var.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/usr.bin/make/var.c
diff -u src/usr.bin/make/var.c:1.1002 src/usr.bin/make/var.c:1.1003
--- src/usr.bin/make/var.c:1.1002	Sat Jan 15 19:05:23 2022
+++ src/usr.bin/make/var.c	Mon Jan 24 20:49:55 2022
@@ -1,4 +1,4 @@
-/*	$NetBSD: var.c,v 1.1002 2022/01/15 19:05:23 rillig Exp $	*/
+/*	$NetBSD: var.c,v 1.1003 2022/01/24 20:49:55 rillig Exp $	*/
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -139,7 +139,7 @@
 #include "metachar.h"
 
 /*	"@(#)var.c	8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.1002 2022/01/15 19:05:23 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.1003 2022/01/24 20:49:55 rillig Exp $");
 
 /*
  * Variables are defined using one of the VAR=value assignments.  Their
@@ -4545,8 +4545,8 @@ Var_Parse(const char **pp, GNode *scope,
 	 * Before applying any modifiers, expand any nested expressions from
 	 * the variable value.
 	 */
-	if (strchr(Expr_Str(&expr), '$') != NULL &&
-	    VarEvalMode_ShouldEval(emode)) {
+	if (VarEvalMode_ShouldEval(emode) &&
+	    strchr(Expr_Str(&expr), '$') != NULL) {
 		char *expanded;
 		VarEvalMode nested_emode = emode;
 		if (opts.strict)

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