From: "phasis68 (Heesob Park)" <phasis@...>
Date: 2013-10-23T17:19:20+09:00
Subject: [ruby-core:57985] [ruby-trunk - Bug #9044] Too many warnings with	VC 2013


Issue #9044 has been updated by phasis68 (Heesob Park).


Here is a part of math.h

#ifndef _HUGE_ENUF
#define _HUGE_ENUF  1e+300	/* _HUGE_ENUF*_HUGE_ENUF must overflow */
#endif /* _HUGE_ENUF */

#define INFINITY   ((float)(_HUGE_ENUF * _HUGE_ENUF))  /* causes warning C4756: overflow in constant arithmetic (by design) */
#define HUGE_VALD  ((double)INFINITY)
#define HUGE_VALF  ((float)INFINITY)
#define HUGE_VALL  ((long double)INFINITY)
#define NAN        ((float)(INFINITY * 0.0F))

----------------------------------------
Bug #9044: Too many warnings with VC 2013
https://bugs.ruby-lang.org/issues/9044#change-42561

Author: phasis68 (Heesob Park)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.1.0dev (2013-10-23 trunk 43392) [i386-mswin32_120]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


While building with Visual Studio Express 2013 on Windows 7, I can see many warnings like inconsistent dll linkage and overflow in constant arithmetic.

Here is a part of warnings.

C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(73) : warning C4273: 'acosh' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(475) : see previous definition of 'acosh'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(74) : warning C4273: 'asinh' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(477) : see previous definition of 'asinh'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(75) : warning C4273: 'atanh' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(479) : see previous definition of 'atanh'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(91) : warning C4273: 'round' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(516) : see previous definition of 'round'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(113) : warning C4273: 'erf' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(486) : see previous definition of 'erf'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(114) : warning C4273: 'erfc' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(487) : see previous definition of 'erfc'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(118) : warning C4273: 'tgamma' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(524) : see previous definition of 'tgamma'
C:\work\ruby-2.1.0-r43392\include\ruby/missing.h(126) : warning C4273: 'cbrt' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(482) : see previous definition of 'cbrt'
math.c(381) : warning C4056: overflow in floating-point constant arithmetic
math.c(463) : warning C4056: overflow in floating-point constant arithmetic
math.c(478) : warning C4273: 'log2' : inconsistent dll linkage
        C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(504) : see previous definition of 'log2'
math.c(523) : warning C4056: overflow in floating-point constant arithmetic
math.c(565) : warning C4056: overflow in floating-point constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(381) : warning C4756: overflow in constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(382) : warning C4756: overflow in constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(463) : warning C4756: overflow in constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(565) : warning C4756: overflow in constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(867) : warning C4756: overflow in constant arithmetic
c:\work\ruby-2.1.0-r43392\math.c(523) : warning C4756: overflow in constant arithmetic

I attached the whole nmake log.



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