MiG bug

[Andreas Jonsson]

Hi,

I get a segfault in migcomm.  Stdarg is used incorrectly in the
functions WriteCopyType and WritePackMsgType, as the contents of
`pvar' is undefined after the first call to vfprintf.  Resetting it
between the calls fixes this problem.

Index: utils.c
===================================================================
RCS file: /cvsroot/hurd/mig/utils.c,v
retrieving revision 1.2
diff -u -r1.2 utils.c
--- utils.c     11 Feb 2004 01:42:14 -0000      1.2
+++ utils.c     18 Mar 2004 14:31:23 -0000
@@ -382,6 +382,8 @@
        fprintf(file, "\t");
        SkipVFPrintf(file, left, pvar);
        fprintf(file, " = ");
+       va_end(pvar);
+       va_start(pvar, right);
        SkipVFPrintf(file, right, pvar);
        fprintf(file, ";\n");
     }
@@ -390,6 +392,8 @@
        fprintf(file, "\t(void) %smig_strncpy(", SubrPrefix);
        SkipVFPrintf(file, left, pvar);
        fprintf(file, ", ");
+       va_end(pvar);
+       va_start(pvar, right);
        SkipVFPrintf(file, right, pvar);
        fprintf(file, ", %d);\n", it->itTypeSize);
     }
@@ -399,6 +403,8 @@
                it->itTypeSize);
        SkipVFPrintf(file, left, pvar);
        fprintf(file, " = * (sp) ");
+       va_end(pvar);
+       va_start(pvar, right);
        SkipVFPrintf(file, right, pvar);
        fprintf(file, "; }\n");
     }
@@ -416,6 +422,8 @@
     fprintf(file, "\t");
     SkipVFPrintf(file, left, pvar);
     fprintf(file, " = ");
+    va_end(pvar);
+    va_start(pvar, right);
     SkipVFPrintf(file, right, pvar);
     fprintf(file, ";\n");