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<a name="1143122"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">C.10 Standard error stream on PC Windows platforms</font>
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<a name="1143123"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">On PC Windows platforms, for toolset versions prior to R1.7, the output from the compiler, including warnings and errors, was sent to the stream called <font size=2 face=Courier><strong>stdout</strong></font>. This stream could be redirected to a file or piped to the utility <strong>more</strong>. </font>
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<a name="1143124"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Toolset version R1.7 sends warnings and errors to <font size=2 face=Courier><strong>stderr</strong></font>. If there are many such messages, they can scroll off the top of the screen. On Windows NT, <font size=2 face=Courier><strong>stderr</strong></font> can be redirected.</font>
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<a name="1143125"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">With version R1.8 on Windows NT, the default is to combine output bound for <font size=2 face=Courier><strong>stdout</strong></font> and <font size=2 face=Courier><strong>stderr</strong></font> into <font size=2 face=Courier><strong>stdout</strong></font>, which is the same behavior as R1.6.</font>
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<a name="1143126"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">On Windows NT it may be useful to send <font size=2 face=Courier><strong>stdout</strong></font> and <font size=2 face=Courier><strong>stderr</strong></font> to different files and this can be done using the option <font size=2 face=Courier><strong>-use-stderr</strong></font>. This option is not available in UNIX. For example, to send all output to file <font size=2 face=Courier><strong>std.out</strong></font>:</font>
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<a name="1143127"> </a><font size=2 face=Courier><strong>st20cc -p c2 demo.c > std.out<br></strong></font>
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<a name="1143128"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">To separate <font size=2 face=Courier><strong>stdout</strong></font> and <font size=2 face=Courier><strong>stderr</strong></font> and write to two files <font size=2 face=Courier><strong>std.out</strong></font> and <font size=2 face=Courier><strong>std.err</strong></font>:</font>
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<a name="1143129"> </a><font size=2 face=Courier><strong>st20cc -p c2 -use-stderr demo.c > std.out 2> std.err<br></strong></font>
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