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Date:      Mon, 21 Oct 2013 19:43:46 -0400
From:      Sean Bruno <sean_bruno@yahoo.com>
To:        "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Cc:        Matthew Fleming <mdf@FreeBSD.org>
Subject:   Re: gperf/src/options.cc -- quiesce clang warnings -Wlogical-op-parentheses
Message-ID:  <1382399026.7749.3.camel@localhost>
In-Reply-To: <1382327452.2610.5.camel@localhost>
References:  <1382327452.2610.5.camel@localhost>

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On Sun, 2013-10-20 at 23:50 -0400, Sean Bruno wrote:
> gperf has some clang warnings that seem to be harmless, but annoying
> regarding some of the logical operations around detecting ascii chars:
>=20
> c++ -O2 -pipe -I/usr/obj/usr/src/tmp/legacy/usr/include -Wno-c
> ++11-extensions
> -I/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib
> -I/usr/src/gnu/usr.bin/g
> perf
> -c /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/options.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/options.cc:284:27:
> warning: '&&' within '||' [-Wlogical-op-parentheses]
>           if (*arg >=3D 'A' && *arg <=3D 'Z' || *arg >=3D 'a' && *arg <=
=3D
> 'z')
>               ~~~~~~~~~~~~^~~~~~~~~~~~~~ ~~
>=20
>=20

Heh, Matthew suggested the obvious in private mail, it seems that this
would be better "spelled" as "isalpha" :-)

Index: contrib/gperf/src/options.cc
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- contrib/gperf/src/options.cc	(revision 256865)
+++ contrib/gperf/src/options.cc	(working copy)
@@ -281,7 +281,7 @@
         {
           putchar (*arg);
           arg++;
-          if (*arg >=3D 'A' && *arg <=3D 'Z' || *arg >=3D 'a' && *arg <=3D=
 'z')
+          if (isalpha(*arg))
             {
               putchar (*arg);
               arg++;
@@ -293,7 +293,7 @@
                   putchar (*arg);
                   arg++;
                 }
-              while (*arg >=3D 'A' && *arg <=3D 'Z' || *arg >=3D 'a' && *a=
rg
<=3D 'z' || *arg =3D=3D '-');
+              while (isalpha(*arg) || *arg =3D=3D '-');
               if (*arg =3D=3D '=3D')
                 {
                   putchar (*arg);


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