- Some work towards moving stderror output for non-linux things out of

the way.

src/debug.c

@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include "debug.h"
 #include "system.h"
+#include "error.h"
 
 static int debuglevel;
 
@@ -45,7 +46,7 @@ debug (int level, char *string)
   if (debugCond (level))
     {
       indent ();
-      fprintf (stderr, "DEBUG [%i]: %s\n", level, string);
+      printfstderr ("DEBUG [%i]: %s\n", level, string);
     }
 #endif
 }

src/error.c

@@ -10,6 +10,27 @@ error_die (void)
   exit (EXIT_ERROR);
 }
 
+//! print to stderror (must be generic to capture linux variants)
+void
+vprintfstderr (char *fmt, va_list args)
+{
+#ifdef linux
+  vfprintf (stderr, fmt, args);
+#else
+  // nothing for non-linux yet
+#endif
+}
+
+void
+printfstderr (char *fmt, ...)
+{
+  va_list args;
+
+  va_start (args, fmt);
+  vprintfstderr (fmt, args);
+  va_end (args);
+}
+
 //! Print error message header
 /**
  * Adapted from [K&R2], p. 174
@@ -18,7 +39,7 @@ error_die (void)
 void
 error_pre (void)
 {
-  fprintf (stderr, "error: ");
+  printfstderr ("error: ");
 }
 
 //! Print post-error message and die.
@@ -32,8 +53,8 @@ error_post (char *fmt, ...)
   va_list args;
 
   va_start (args, fmt);
-  vfprintf (stderr, fmt, args);
-  fprintf (stderr, "\n");
+  vprintfstderr (fmt, args);
+  printfstderr ("\n");
   va_end (args);
   exit (EXIT_ERROR);
 }
@@ -50,8 +71,8 @@ error (char *fmt, ...)
 
   error_pre ();
   va_start (args, fmt);
-  vfprintf (stderr, fmt, args);
-  fprintf (stderr, "\n");
+  vprintfstderr (fmt, args);
+  printfstderr ("\n");
   va_end (args);
   error_die ();
 }
@@ -66,8 +87,8 @@ warning (char *fmt, ...)
   va_list args;
 
   va_start (args, fmt);
-  fprintf (stderr, "warning: ");
-  vfprintf (stderr, fmt, args);
-  fprintf (stderr, "\n");
+  printfstderr ("warning: ");
+  vprintfstderr (fmt, args);
+  printfstderr ("\n");
   va_end (args);
 }

src/error.h

@@ -5,6 +5,8 @@
 enum exittypes
 { EXIT_NOATTACK = 0, EXIT_ERROR = 1, EXIT_NOCLAIM = 2, EXIT_ATTACK = 3 };
 
+void vprintfstderr (char *fmt, va_list args);
+void printfstderr (char *fmt, ...);
 void error_die (void);
 void error_pre (void);
 void error_post (char *fmt, ...);

src/main.c

@@ -258,7 +258,7 @@ modelCheck (const System sys)
   if (switches.reportStates > 0)
     {
       //                States: 1.000e+06
-      fprintf (stderr, "                  \r");
+      printfstderr ("                  \r");
     }
 
   if (claimcount == 0)

src/scanner.l

@@ -7,6 +7,7 @@
 #include "pheading.h"
 #include "tac.h"
 #include "switches.h"
+#include "error.h"
 
 /* tokens for language */
 #include "parser.h"
@@ -63,7 +64,7 @@ include		BEGIN(incl);
 <incl>[^\"]+	{ /* got the include file name */
 	                 if ( include_stack_ptr >= MAX_INCLUDE_DEPTH )
 	                     {
-	                     fprintf( stderr, "Includes nested too deeply" );
+	                     printfstderr( "Includes nested too deeply" );
 	                     exit( 1 );
 	                     }
 	

src/switches.c

@@ -1231,8 +1231,8 @@ switcher (const int process, int index, int commandline)
 	  /* try to open */
 	  if (!freopen (arg_pointer, "w", stdout))
 	    {
-	      fprintf (stderr, "Could not create output file '%s'.\n",
-		       arg_pointer);
+	      printfstderr ("Could not create output file '%s'.\n",
+			    arg_pointer);
 	      exit (1);
 	    }
 	  arg_next ();
@@ -1259,12 +1259,12 @@ switcher (const int process, int index, int commandline)
 	      // The file was not found. We have two options...
 	      if (this_arg[0] == '-')
 		{
-		  fprintf (stderr, "Unknown switch '%s'.\n", this_arg);
+		  printfstderr ("Unknown switch '%s'.\n", this_arg);
 		}
 	      else
 		{
-		  fprintf (stderr, "Could not open input file '%s'.\n",
-			   this_arg);
+		  printfstderr ("Could not open input file '%s'.\n",
+				this_arg);
 		}
 	      exit (1);
 	    }

src/symbol.c

@@ -318,7 +318,12 @@ getOutputStream (void)
   if (globalError == 0)
     return (FILE *) globalStream;
   else
+#ifdef linux
     return stderr;
+#else
+    // For non-linux, we simply omit it
+    return NULL;
+#endif
 }
 
 //! Print out according to globalError
@@ -336,9 +341,14 @@ void
 eprintf (char *fmt, ...)
 {
   va_list args;
+  FILE *stream;
 
   va_start (args, fmt);
-  vfprintf (getOutputStream (), fmt, args);
+  stream = getOutputStream ();
+  if (stream != NULL)
+    {
+      vfprintf (stream, fmt, args);
+    }
   va_end (args);
 }
 
@@ -346,5 +356,11 @@ eprintf (char *fmt, ...)
 void
 veprintf (const char *fmt, va_list args)
 {
-  vfprintf (getOutputStream (), fmt, args);
+  FILE *stream;
+
+  stream = getOutputStream ();
+  if (stream != NULL)
+    {
+      vfprintf (stream, fmt, args);
+    }
 }