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<p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I noticed that the function strerror() has
been overridden for the MinGW version of MLton.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The overridden version uses “FormatMessage()”
in order to build the error message. This was done in order to deal with
extended error codes that have been introduced for sockets handling.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The problem with this implementation is
that it leads to wrong results for existing error codes.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>For example, with ENOSPC, strerror() should
return “No space left on device”. Anyway, the MLton implementation
returns “The printer is out of paper” because the “errno”
value does not have the same meaning than the corresponding system error code
on Windows.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>If you are absolutely sure that the
extended error codes that have been introduced will not conflict with the
existing “errno” values, a solution would consist in adding the
following block of code at the beginning of the “MLton_strerror()”
function :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> char *MLton_strerror(int code) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> static char buffer[512];<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>+ /* FormatMessage() should only be
called to generate an error message for the extended error codes. */<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>+ if (code < _sys_nerr)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>+ return _strerror(code);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>+<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Best regards<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Nicolas<o:p></o:p></span></p>
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