[PATCH] D47105: Fix compiler warning of extraneous parentheses

Tom Rix via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat May 19 08:25:01 PDT 2018


trixirt created this revision.
trixirt added reviewers: bkramer, resistor.
Herald added a subscriber: llvm-commits.

Building with clang 5 produces this warning

...lib/Support/regengine.inc:706:13: warning: equality comparison with extraneous parentheses [-Wparentheses-equality]

  if (((st) == (fresh)))

Inspection of the EQ macro shows that the ()'s in the if-check are not needed.


Repository:
  rL LLVM

https://reviews.llvm.org/D47105

Files:
  lib/Support/regengine.inc


Index: lib/Support/regengine.inc
===================================================================
--- lib/Support/regengine.inc
+++ lib/Support/regengine.inc
@@ -703,7 +703,8 @@
 		/* next character */
 		lastc = c;
 		c = (p == m->endp) ? OUT : *p;
-		if (EQ(st, fresh))
+		/* EQ has ()'s, so another set for 'if' is not necessary */
+		if EQ(st, fresh)
 			coldp = p;
 
 		/* is there an EOL and/or BOL between lastc and c? */


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