                                                    ա 2004ǯ 5  27 

Sun[tm] Studio 9C ѥ Readme 

    ܼ

      A. Ϥ 
      B. Sun Studio 9C ѥˤĤ 
      C. ѹ줿ǽ 
      D. եȥν 
      E. Ȳ 
      F. »ȸߴ 
      G. Ҥθ 



     ------------------------------------------------------------------

     A. Ϥ

     ʸˤϡSun[tm] Studio 9C ѥ˴ؤ󤬵ܤ
     ƤޤΥ꡼Ƴ줿ǽեȥνࡢ
     Τ»ࡢߴˤĤޤʸ
     ƤϡΥ꡼Υޥ˥奢εƤͥ褷ޤ

     ʥޥ˥奢 

        * ꡼Ρ (Solaris ץåȥե): 
          http://docs.sun.com ǽǤ꡼ΡȤξϡ
          ʤ Readme եξͥ褷ޤ 
        * Sun Studio 9 Υɥ: ʤΥޥ˥奢ڡREADME 
           HTML С󡢤ӥޥ˥奢ϡ
          /installation_directory/SUNWspro/docs/ja/index.html 饢
          ǤޤǥեȤ installation_directory  /opt 
          index.html ڡʲΥޥ˥奢˥Ǥޤ
             o C 桼 
             o C++ 桼 
             o إ饤֥ Readme 
             o ͷ׻ 
             o 󥯥󥿥󥫡 Readme 
             o Sun Performance Library Readme 
             o Sun Performance Library Reference Manual 
             o Sun Performance Library User's Guide for Fortran and C 
        * 糫ȯĶ (IDE) Υɥ: IDE ˤ֥إסץ
          ˥塼 Sun Studio 9 IDE γƥݡͥȤΥ饤
          פ˥Ǥޤ 
        * ȯԸ꥽Υݡ: ѻץ륳ɡ
          ȡʥå١ˤĤƤϡȯԸݡ 
          http://developers.sun.com/prodtech/cc 򻲾ȤƤ 

     ʸΥƥǤɽˤϡޥɥץץȤǼΥޥ
     ɤϤޤ

        cc -xhelp=readme

     ʸ HTML ǤɽˤϡǥեȤΥ󥹥ȡǥ쥯
     ȥˤ뼡Υե򳫤ޤ

          file:/opt/SUNWspro/docs/ja/index.html

      - Sun Studio 9 եȥ /opt ʳΥǥ쥯ȥ˥
     ȡ뤵ƤϡѤΥƥˤºݤΥѥ򡢥
     ƥԤ˳ǧƤ
     


     ------------------------------------------------------------------

     B. Sun Studio 9C ѥˤĤ

     Υ꡼ C ѥϡSPARC (R); ץåȥե 
     Solaris[tm] ڥ졼ƥ󥰴ĶΥС 8910 
     x86 ץåȥե Solaris ڥ졼ƥ󥰴ĶΥС 
     8910 ѤǤޤ 

     Solaris 10 Υڥ졼ƥ󥰥ƥǤϡΥѥ
     ϡISO/IEC 9899:1999, Programming Language - C ʤ˵ꤵƤ
     쵡ǽʬбƤޤSolaris 10 ǤϡΥѥ
     ϡC99 ʤ˴˽򤷤Ƥޤ (-xc99=all,lib ꤷ
     )ΥѥϤޤISO/IEC 9899:1990, Programming 
     Languages - C ʤˤ򤷤Ƥޤ

     γȯ꡼ 64 ӥå SPARC ƥ㵡ǽϡC ι
     ݵʤ -xarch=v9 бƤޤ
     


     ------------------------------------------------------------------

     C. ѹ줿ǽ

     ǤϡΥ꡼ C ѥοɲä줿ǽѹ
     줿ǽˤĤޤ

        * -xarch-xcode-xmemalign -xprefetch ץΥ
          եȤѹ-fast  -O ץŸѹˤ
          ѥեޥ󥹤θ 

        * Intel ƥ -xarch-xtarget -xchip 
          ե饰 -flteval ץɲ

        * -xlibmopt-xnolibmopt-xipo_archive 
          -xprefetch_auto_type ץˤ¹Իѥեޥ󥹤θ
          

        * -xpch ǤΥץꥳѥѤߥإåեμưˤ
          ѥѥեޥ󥹤θ

        * -xchip  -xtarget Υե饰ɲäˤ SPARC Υݡ
          ĥ 

        * extern 饤ؿؼդνҡʸ̾ ʤɡ
          Solaris 10 Ǥ 1999 C ISO ǽδݡ 

        * lint 桼ƥƥΥƥǽɲ 

     -xarch ΥǥեȤ v8plus ѹ 

     C ѥ餬ɤȤΥǥեȤΥƥ㤬
     v8plus (UltraSPARC) ˤʤޤΥ꡼ǡv7 Υݡ
     ѻߤͽǤ

     ǥեȤǤϡ߻ѤƤۤܤޥǼ¹Ի
     Υѥեޥ󥹤夷ޤUltraSPARC Υԥ塼
     ؤտޤץꥱϡԥ塼Ǥ
     ǥեȤưʤʤޤץꥱ󤬤
     ԥ塼ư褦ˤˤϡ-xarch=v8 ǥѥ뤷Ƥ
     

     v8 ƥϡƥѥ饳ޥɹԤǤʤ
     ٤ƤΥ󥯻ޥɤǤ -xarch=v8 ץŪ˻ꤹ
     ɬפޤ󶡤Υƥ饤֥ϡv8 ƥư
     ޤ 

     v7 ƥϡƥѥ饳ޥɹԤǤʤ
     ٤ƤΥ󥯻ޥɤǤ -xarch=v7 ץŪ˻ꤹ
     ɬפޤ󶡤Υƥ饤֥ϡv8 ̿᥻åȤѤ
     ޤSun Studio 9 ꡼ξ硢v7 ˤĤƥݡȤƤ륪
     ڥ졼ƥ󥰥ƥϡSolaris 8 ꡼Ǥv8 ̿᤬
     Ф줿硢Solaris 8 ڥ졼ƥ󥰥ƥϥեȥǤ
     ̿ᤷޤΤץϼ¹Ԥޤѥե
     󥹤㲼ޤ

     x86 ξ硢-xarch ϥǥեȤ generic ˤʤޤx86 ξ硢
     -fast  -xarch=native Ÿ뤳ȤդƤ

     -xarch ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     -xcode ΥǥեȤѹ 

     (SPARC Τ) v9 ξ硢ǥեȤ -xcode=abs44 Ǥv8 ξ
     ϡ-xcode=abs32 ΤޤޤǤ

     -xcode ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     -xmemalign ΥǥեȤѹ 

     (SPARC Τ) v8 ƥξ硢-xmemalign  -xmemalign=8i 
     ˤʤޤv9 ƥξϡǥեȤ -xmemalign=8s 
     Ǥ

     -xmemalign ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     -xprefetch ΥǥեȤѹ 

     (SPARC Τ) -xprefetch ΥǥեȤ -xprefetch=auto,explicit 
     ʤޤŪΥ꡼ѥĥץ
     ˤϡѹɤʤƶ⤿餷ޤѹ̵
     ˤˤϡ-xprefetch=no%auto,no%explicit ꤷޤ

     -xprefetch ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     -fast Ÿѹ 

     -fast ץ -xlibmopt ˤŸ褦ˤʤޤ

     -O Ÿѹ 

     (SPARC  x86) -O ޥϡ-xO2 ǤϤʤ-xO3 Ÿ
     ˤʤޤ

     ΥǥեȤѹˤäơ¹ԻΥѥեޥ󥹤夷ޤ
     ѿưŪ volatile ȸʤȤˤ
     ξ硢-xO3 Ŭڤˤʤ뤳ȤޤΤȤ
     ȤɽŪʥץȤƤϡѤƱǥХ
     ɥ饤ФŤޥåɥץꥱ󤬤ޤϡ
     -O ǤϤʤ-xO2 Ȥäƥѥ뤹뤳ȤǤ

     -O ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     Intel ƥ -xarch-xtarget-xchip Υե饰ɲ

     C ѥ餬Intel  -xarch-xtarget -xchip Ѥ
     ե饰򥵥ݡȤ褦ˤʤޤοե饰ϡ
     Intel ץåȥեǤ Solaris եȥˤ sse 
     sse2 ̿ΥݡȤȤȤ߹碌 Pentium 3  Pentium 4 
     åפѤ뤳ȤտޤƤޤե饰ϼΤȤǤ

        * -xchip=pentium3  Pentium 3 ΥץåѤ˺Ŭޤ
        * -xchip=pentium4  Pentium 4 ΥץåѤ˺Ŭޤ
        * -xtarget=pentium3 ϡ-xarch=sse-xchip=pentium3
          -xcache=16/32/4:256/32/4 ꤷޤ
        * -xtarget=pentium4 ϡ-xarch=sse2-xchip=pentium4
          -xcache=8/64/4:256/128/8 ꤷޤ
        * -xarch=sse ϡpentium_pro ̿᥻åȥƥ SSE ̿
          ᥻åȤɲäޤ
        * -xarch=sse2 ϡSSE Ĥ̿᥻åȤ SSE2 ̿᥻åȤ
          ɲäޤ

          x86 ˴ؤõ
          Solaris x86 SSE/SSE2 Pentium 4 ߴץåȥեư
          褦 -xarch={sse | sse2} դƥѥ뤷ץϡ
          SSE/SSE2 бΥץåȥեǤΤ߼¹Ԥɬפޤ
          SSE/SSE2 бƤʤץåȥեǤץ
          ¹Ԥȡ㳰ȯꡢŪʷٹ
          ʤʷ̤ȯꤹ뤳Ȥޤ
          SSE/SSE2 ǥѥ뤵줿Хʥ꤬ SSE/SSE2 бƤ
          ץåȥեǼ¹Ԥ뤳ȤΤʤ褦ˤ뤿 OS 
          ӥѥФѥå󶡤뤫⤷ޤ
          

          Pentium 4 ߴץåȥեξ硢Solaris 9 update 6 ʹ
           OS ꡼ SSE/SSE2 бƤޤΥС
           Solaris OS  SSE/SSE2 бƤޤ

          ΤȤϡ.il 饤󥢥֥ؿѤƤ
          䡢SSE/SSE2 ̿ѤƤ __asm() ֥
          ɤˤƤϤޤޤ

          ѥȥ󥯤̡˹ԤϡɬѥȤä
          󥯤-xarch={sse | sse2} Ŭڤʵư롼󤬥󥯤
          褦ˤƤ

     ºݤΥѥŬڤ -xarch-xchip -xtarget Υե
     Ȥ߹碌ϡΥɥ饤˴ŤƷꤹ뤳ȤǤޤ

        * Solaris 9 update 6  Solaris ¹Ԥ 
          Pentium 3 ޤ Pentium 4 ǹۤԤ-fast-xarch=native
          ޤ -xtarget=native ꤹ뤫ɤ

          ξ硢ѥϼΤ褦Ÿޤ

             o Solaris 9 update 5 ޤϤ Solaris ڥ졼
               ƥ󥰥ƥϡsse  sse2 ̿򥵥ݡȤʤ
               ᡢ-xarch  pentium_pro ꤵޤ (Ԥ
                pentium3 뤤 pentium4 ǤϤޤ)

               : ΥС Solaris եȥѤ
               뤫ɤ˴طʤ-xarch=sse 뤤 -xarch=sse2 
               ꤹ뤳ȤǤޤSolaris 9 update 6 ʹߤ
                Solaris 10  SSE  SSE2 ̿򥵥ݡȤƤ
               ᡢۤ줿¹ԲǽեϡС
                Solaris եȥ¹ԤޥǼ¹Ԥ
               ɬפޤ

             o -xchip ϡŬ pentium3 ޤ pentium4 ꤵޤ
             o -xcache ϡPentium 3 ץåξ 16/32/4:256/32/4
               Pentium 4 ץåξ 8/64/4:256/128/8 ꤵ
               

        * Solaris 9 update 6 ʹߤ Solaris ¹Ԥ Pentium 3 ޤ
          Pentium 4 ǹۤԤ-fast-xarch=nativeޤ 
          -xtarget=native ꤹ뤫ɤ

          ξ硢ѥϼΤ褦Ÿޤ

             o -xarch ϡPentium 3 ξ ssePentium 4 ξ sse2 
               ꤵޤ
             o -xchip ϡŬ pentium3 ޤ pentium4 ꤵޤ
             o -xcache ϡPentium 3 ץåξ 16/32/4:256/32/4
               Pentium 4 ץåξ 8/64/4:256/128/8 ꤵ
               


     -xarch-xtarget -xchip ξܺ٤ϡC ޥ˥奢ڡ 
     cc(1) 򻲾ȤƤ

     -xlibmopt  -xnolibmopt ץɲ 

     -xlibmopt ץϡŬ줿إ롼Υ饤֥
     褦ѥ˻ؼޤΥץѤȤ 
     -fround=nearest ꤹ뤳ȤˤäơǥեȤδݤ⡼ɤ
     Ѥɬפޤإ롼饤֥ϺǹΥѥեޥ
     褦˺ŬƤꡢ̾®ʥɤޤ
     η̤ϡ̾οإ饤֥꤬̤Ⱦۤʤ뤳Ȥ
     ޤξ硢̾ۤʤΤϺǸΥӥåȤǤ

     Υ饤֥ϡޥɹԤǿɲä줿 -xnolibmopt ץ
     ꤹ뤳ȤˤäŪ̵ˤ뤳ȤǤޤ

     -xlibmopt  -xnolibmopt ξܺ٤ϡC ޥ˥奢ڡ cc(1) 
     򻲾ȤƤ

     -xipo_archive ץɲ 

      -xipo_archive ץϡ-xipo Ȥäƥѥ뤵졢
     ¹Բǽե˥֥饤֥ (.a) ¸ߤ
     ֥ȥեȤäơ󥫡Ϥ֥ȥե
     Ŭ褦ؼޤѥ˺Ŭ줿饤֥˴
     ޤ륪֥ȥեϤ٤ơκŬ줿С
     ޤ

     -xipo_archive ξܺ٤ϡcc(1) Υޥ˥奢ڡ򻲾ȤƤ

     -xprefetch_auto_type ɲ 

     ץ -xprefetch_auto_type Ѥ뤳Ȥˤäơľ
     ꡼ФƥץեåΤƱˡǡ
     -xprefetch_level=[1|2|3] ؼ롼פФƴܥץեå
     뤳ȤǤޤ

     -xdepend-xrestrict-xalias_level ʤɤΥץȤ߹碌
     ȡ-xprefetch_auto_type κŬΥåȤȤǤޤ
     Υץϥ꡼̾Τޤӽ
     ΤΩĤᡢܥץեåη׻Ѷ˱ƶư
     Ūʴܥץեå¥ʤޤ

     -xprefetch_auto_type ץξܺ٤ϡcc(1) Υޥ˥奢ڡ
     򻲾ȤƤ

     -xpch ˤץꥳѥѤߥإåեμư 

     Υ꡼ C ѥǤϡץꥳѥѤߤΥإåǽ
     ĥ졢ѥ¦ǥץꥳѥѤߥإåե
     ưŪǤ褦ˤʤäƤޤޤǤɤꡢץ
     ѥѤߥإåեư뤳ȤǤޤ
     ѥοǽξܺ٤ϡcc(1) Υޥ˥奢ڡ -xpch 
     ɤߤޤCCadmin(1) Υޥ˥奢ڡ
     ⻲ȤƤ

     -xchip  -xtarget Υե饰ɲäˤ SPARC Υݡȳĥ 

     (SPARC Τ) -xchip  -xtarget ץ󤬡ͤȤ 
     ultra3i  ultra4 򥵥ݡȤ褦ˤʤޤΤᡢ
     UltraSPARC IIIi  UltraSPARC IV Ѥ˺Ŭ줿ץꥱ
     ۤǤޤ

     extern 饤ؿΥݡ 

     饤ؿ extern 饤ؿ1999 C ISO 
     ʤλͤɤ˵ǽ褦ˤʤޤ

     饤ؿȤϡ inline Ȥstatic ޤ 
     extern ɤʤ줿ؿǤ (ޤϥ
     롼ɥե) ˴ޤޤ뤢ץȥפˤ⡢static ޤ
      extern ɤʤǥ inline ޤޤޤ

     饤ؿϡؿ˳󶡤ޤ󡣥饤
     ޤॽե˸ؿƤӽФϤɤ⡢ƤӽФ֤Ǵ
     򥤥饤󲽤뤫줿ؿ򻲾Ȥ뤳Ȥˤ
     Ƽ¸ޤ

     Ŭˤθ̡ѥϡ-xO3 ʾ夬ꤵ
     ˤΤߥ饤ФƤӽФ򥤥饤󲽤ޤ
     ʳξϡؿФƤӽФԤޤΤᡢ
     饤ޤץϡextern ؿޤ४֥
     եȥ󥯤뤳Ȥ侩ޤ

     ؿȤȤ (뤤ϴؿȼեǤդΥץȥ
     ) extern  inline ξΥɤѤȡ
     ؿΥ֥ȥեޤC++ Υ󥯤
     θߴݻ뤿ᡢextern 饤ؿʣޤ४
     Ȥ󥯤硢󥫡ϡؿΤ 1 Ĥ
     򤷡٤ƤγȤ¸ޤ

     ʤŬ礷ư¸ˤϡǿΥѥȤäƸŤ
     ɤ򥳥ѥ뤹ɬפޤŤ C  C++ Х
      (C/C++ 5.6 )  extern 饤ؿѤƤơ
     ŤХʥưѹ뤳Ȥʤ C  C++ Хʥ
     ȥ󥯤ϡ-features=no%extinl ꤷޤ

     -features ξܺ٤ϡC ޥ˥奢ڡ cc(1) 򻲾ȤƤ

     ؼդν 

     ؼդνҤϡͥץߥ󥰤ǰŪʥѡ
     ȤߤǤ

     ؼդνҤˤäơƥץߥ󥰤ǰŪʥѡ
     ¤ΤꡢƬСǤ뤫ɤ˴طʤǤ
     ΥСȤäƶΤǤޤ

     󤲤ƹͤƤߤޤǽϡؼդνҤѤ
     ˡ򼨤Ƥޤ 

          enum { first, second, third };
          const char *nm[] = {
          [third] = "third member",
          [first] = "first member",
          [second] = "second member",
          };

     ϡؼդνҤѤƹ¤ΤΥեɤ
     ˡ򼨤Ƥޤ

          division_t result = { .quot = 2, .rem = -1 };

     ϡؼդνҤѤʳˡǤϸ
     줬ʣʹ¤Τˡ򼨤Ƥޤ 

          struct { int z[3], count; } w[] = { [0].z = {1}, [1].z[0] = 2 };
     1 ĤλؼҤξü뤳ȤǤޤ 

          int z[MAX] = {1, 3, 5, 7, 9, [MAX-5] = 8, 6, 4, 2, 0};

     MAX  10 礭硢ˤͥǤޤޤ
     MAX  10 꾮硢ǽ 5 ĤνҤ󶡤ͤ
     ϡ2 ܤ 5 ͤˤä֤ޤ

     ΤΤ٤ƤΥС뤳ȤǤޤ 

          union { /* ... */ } u = { .any_member = 42 };

     ʸ̾ (UCN) 

     UCN ǤϡC ΥǱѻФǤʤǤդʸѤ뤳Ȥ
     ǤޤUCN ηϼΤȤǤ 

        * \u 4  16  
        * \U 8  16  

     UCN ˤϡ00A0 ̤ 0024 ($)0040 (@)0060 (?) ʳ͡
      D800 - DFFF ϰϤͤǤޤ

     ̻Ҥʸʸƥ UCN ѤơC δʸ
     åȤˤϤʤʸɽȤǤޤ

     UCN \Unnnnnnnn ϡ8 û̻ (ISO/IEC 10646 )  
     nnnnnnnn ʸɽޤƱͤʸ̾ \unnnn ϡ4û
     ̻Ҥ nnnn (ޤ 8 û̻Ҥ 0000nnnn) ʸɽޤ

     -flteval ץɲ 

     (Intel Τ) Υץϡưɾˡ˻
     ޤ

     -flteval ξܺ٤ϡcc(1) Υޥ˥奢ڡ򻲾ȤƤ

     lint Υƥǽɲ 

     Υ꡼ lint 桼ƥƥˤϡƥǽ
     ɲäƤޤѥ˿ -errsecurity ץ
     Ѥƥ꤬ʤɤɤ򸡺뤳Ȥ
     ޤ

     -errsecurity[={core, standard, extended, %none}]

     lint -errsecurity=core
     Υ٥ǤϡƤξǰǤʤޤϸ뤳Ȥ
     ɤιʸʤɤ򸡺ޤΥ٥θ
     ˤϡʲޤ 

        * printf()  scanf() ϤδؿǤѿʸλ 
        * scanf() ؿˤʸ (%s) λ 
        * ʻˡΤʤؿλ (gets()cftime()ascftime()
          creat()) 
        * O_CREAT Ȥ߹碌 open()  

     Υ٥Ƿٹ륽ɤϥХȹͤƤ
     Υɤѹ뤳Ȥ侩ޤɤʾǤ⡢ñǤ
     ̤ˡޤ

     lint -errsecurity=standard
     Υ٥θˤϡcore ٥θ˲äơ⤷ʤ
     ɤ̤ˡ빽ʸθޤ
     ɤθˤϡΥ٥侩ޤΥ٥ɲä븡
     ϡʲޤ

        * strlcpy() ʳʸ󥳥ԡؿλ 
        * ȼؿλ 
        * ǤʤؿȤäե 
        * fopen() Ȥäեκ 
        * ƤӽФؿλ 

     Υ٥Ƿٹ륽ɤϡɤޤ
     ɤ˽񤭴ƤΥɤ˴ޤޤ
     ٹн褹뤳Ȥȡץꥱ԰ˤꥹ
     ȤΥХ󥹤ƤƤ

     lint -errsecurity=extended
     Υ٥Ǥϡcore  standard ٥θޤരʸ
     ԤޤޤˤäƤϰǤʤǽ빽ʸˤĤ
     ơ¿ηٹޤΥ٥θϡɤľ
     ΰˤʤޤƤ륽ɤɬפΤȹ
     ɬפϤޤ󡣤Υ٥ɲä븡ˤϡʲ
     

        * 롼Ǥ getc() ޤ fgetc() θƤӽФ 
        * ѥ̾ˤʤ꤬ʴؿλ 
        * exec() Ϥδؿλ 
        * stat() ¾δؿȤδ֤ζ 

     Υ٥Ƿٹ륳ɤľơŪ
     뤫ɤȽꤹ뤳ȤǤޤ

     -errsecurity ͤꤵƤʤ硢ѥ 
     -errsecury=%none ꤷޤ-errsecurity ϻꤵƤ뤬
     ꤵƤʤϡ-errsecurity=standard ꤷޤ 
     


     ------------------------------------------------------------------

     D. եȥν

     ǤϿϤޤ
     


     ------------------------------------------------------------------

     E. Ȳ

     ǤϡޤǤˤ狼äƤ륽եȥȤβ
     ĤޤǿޤϥѥåˤĤƤϡ
     http://developers.sun.com/prodtech/cc/support_index.html 򻲾Ȥ
     Ƥ

        * 5044272 -flteval=2 ΤȤñʥɥ󥹤 SIGSEGV 
          ˤʤ
     
          ѥ餬ä ldouble  double ѴƤޤ
          ƥȤϡ꤬ȯǤ 

          % cat t.c
          #pragma STDC FENV_ACCESS ON
          #pragma STDC FP_CONTRACT OFF
          
          int NumFail = 0;
          int NumPass = 0;
          
          int main(void)
          {
                  double d = 5.;
                  auto double d3_aut = 3;
          
                  d3_aut = 3;
                  if (d == (d3_aut += 2.L)) {
                          NumPass++;
                  } else {
                          NumFail++;
                  }
          
                  return (NumFail);
          }
          % cc t.c -flteval=2
          % ./a.out
          % echo $status
          1

        * 5044281 -flteval=2 ⡼ɤΤȤñʹ¤ʥ
           

          % more t.c
          #include <stdio.h>
          
          static const float f_one = 1.f;
          static const float f_zero = 0.f;
          int main(void) {
                  int NumFail = 0, NumPass = 0;
          
                  if ((f_zero ? f_one : f_zero) == f_zero) {
                          NumPass++;
                  } else {
                          NumFail++;
                  }
                  return (NumFail);
          }
          % cc t.c -flteval=2
          % ./a.out
          % echo $status
          1

        * 5044322 -flteval=2 ΤȤfor: ld = f += 1.f; ʥ
           

          ynh% cat t.c
          int NumFail = 0uL;
          int NumPass = 0uL;
          long double ld;
          float f;
          
          int main() {
                  f = 0x1p-23f / 2.f;
                  ld = f += 1.f;
                  if (ld == 1.L) {
                          NumPass++;
                  } else {
                          NumFail++;
                  }
          
                  return (NumFail);
          }
          ynh% /set/mercury/dist/intel-S2/bin/cc t.c -flteval=2
          ynh% ./a.out
          ynh% echo $status
          1
          ynh% 
     


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