Date: Sat, 13 May 2017 22:36:54 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r318259 - head/lib/msun/src Message-ID: <201705132236.v4DMaswD077353@repo.freebsd.org>
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Author: dim Date: Sat May 13 22:36:54 2017 New Revision: 318259 URL: https://svnweb.freebsd.org/changeset/base/318259 Log: Silence a -Wunused warning about the junk variable being used to raise an inexact floating point exception. The variable cannot be eliminated, unfortunately, otherwise the desired addition triggering the exception will be emitted neither by clang, nor by gcc. Reviewed by: Steve Kargl, bde MFC after: 3 days Modified: head/lib/msun/src/catrig.c head/lib/msun/src/catrigf.c head/lib/msun/src/catrigl.c Modified: head/lib/msun/src/catrig.c ============================================================================== --- head/lib/msun/src/catrig.c Sat May 13 20:28:32 2017 (r318258) +++ head/lib/msun/src/catrig.c Sat May 13 22:36:54 2017 (r318259) @@ -37,7 +37,7 @@ __FBSDID("$FreeBSD$"); #define isinf(x) (fabs(x) == INFINITY) #undef isnan #define isnan(x) ((x) != (x)) -#define raise_inexact() do { volatile float junk = 1 + tiny; } while(0) +#define raise_inexact() do { volatile float junk __unused = 1 + tiny; } while(0) #undef signbit #define signbit(x) (__builtin_signbit(x)) Modified: head/lib/msun/src/catrigf.c ============================================================================== --- head/lib/msun/src/catrigf.c Sat May 13 20:28:32 2017 (r318258) +++ head/lib/msun/src/catrigf.c Sat May 13 22:36:54 2017 (r318259) @@ -51,7 +51,7 @@ __FBSDID("$FreeBSD$"); #define isinf(x) (fabsf(x) == INFINITY) #undef isnan #define isnan(x) ((x) != (x)) -#define raise_inexact() do { volatile float junk = 1 + tiny; } while(0) +#define raise_inexact() do { volatile float junk __unused = 1 + tiny; } while(0) #undef signbit #define signbit(x) (__builtin_signbitf(x)) Modified: head/lib/msun/src/catrigl.c ============================================================================== --- head/lib/msun/src/catrigl.c Sat May 13 20:28:32 2017 (r318258) +++ head/lib/msun/src/catrigl.c Sat May 13 22:36:54 2017 (r318259) @@ -53,7 +53,7 @@ __FBSDID("$FreeBSD$"); #define isinf(x) (fabsl(x) == INFINITY) #undef isnan #define isnan(x) ((x) != (x)) -#define raise_inexact() do { volatile float junk = 1 + tiny; } while(0) +#define raise_inexact() do { volatile float junk __unused = 1 + tiny; } while(0) #undef signbit #define signbit(x) (__builtin_signbitl(x))
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