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Silence a -Wunused warning about the junk variable being used to raise

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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
This commit is contained in:
Dimitry Andric 2017-05-13 22:36:54 +00:00
parent 73a73f7bd2
commit 3a462c983d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=318259
3 changed files with 3 additions and 3 deletions
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2
lib/msun/src/catrig.c
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@ -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))

2
lib/msun/src/catrigf.c
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@ -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))

2
lib/msun/src/catrigl.c
View File

@ -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))