https://community.intel.com/t5/Software-Archive/Linking-error/m-p/965829#M22829 A strange little bug with v6.6: when using loc(..) to get an integer pointer to a Windows function (e.g. DefWindowProc), then a link error message is generated unless the function is also referred to directly in that module. <BR /> <BR />For example, the code <BR /> <BR /> program Bug <BR /> use DFWin <BR /> integer (4) ret <BR /> ! ret = DefWindowProc(0,0,0,0) <BR /> ret = loc(DefWindowProc) <BR /> end <BR /> <BR />generates the messages <BR /> <BR />Compiling Fortran... <BR />S:UsersStuartTESTBug&#8;ug.for <BR />Linking... <BR />bug.obj : error LNK2001: unresolved external symbol _DefWindowProcA <BR />Debug/Bug.exe : fatal error LNK1120: 1 unresolved externals <BR />Error executing link.exe. <BR /> <BR />Bug.exe - 2 error(s), 0 warning(s) <BR /> <BR />By simply uncommenting the line "ret = DefWindowProc(...)", things work fine! <BR /> <BR />Stuart. Tue, 04 Sep 2001 23:49:24 GMT Dalziel__Stuart 2001-09-04T23:49:24Z https://community.intel.com/t5/Software-Archive/Linking-error/m-p/965829#M22829 A strange little bug with v6.6: when using loc(..) to get an integer pointer to a Windows function (e.g. DefWindowProc), then a link error message is generated unless the function is also referred to directly in that module. <BR /> <BR />For example, the code <BR /> <BR /> program Bug <BR /> use DFWin <BR /> integer (4) ret <BR /> ! ret = DefWindowProc(0,0,0,0) <BR /> ret = loc(DefWindowProc) <BR /> end <BR /> <BR />generates the messages <BR /> <BR />Compiling Fortran... <BR />S:UsersStuartTESTBug&#8;ug.for <BR />Linking... <BR />bug.obj : error LNK2001: unresolved external symbol _DefWindowProcA <BR />Debug/Bug.exe : fatal error LNK1120: 1 unresolved externals <BR />Error executing link.exe. <BR /> <BR />Bug.exe - 2 error(s), 0 warning(s) <BR /> <BR />By simply uncommenting the line "ret = DefWindowProc(...)", things work fine! <BR /> <BR />Stuart. Tue, 04 Sep 2001 23:49:24 GMT https://community.intel.com/t5/Software-Archive/Linking-error/m-p/965829#M22829 Dalziel__Stuart 2001-09-04T23:49:24Z https://community.intel.com/t5/Software-Archive/Linking-error/m-p/965830#M22830 Please send this to vf-support@compaq.com so that it gets tracked and fixed.<BR /><BR />Steve Wed, 05 Sep 2001 01:01:37 GMT https://community.intel.com/t5/Software-Archive/Linking-error/m-p/965830#M22830 Steven_L_Intel1 2001-09-05T01:01:37Z