Constify the format string in a few printf-like functions.
git-svn-id: svn://svn.valgrind.org/vex/trunk@2530 8f6e269a-dfd6-0310-a8e1-e2731360e62c
diff --git a/priv/main_util.h b/priv/main_util.h
index bee6649..ce5aa00 100644
--- a/priv/main_util.h
+++ b/priv/main_util.h
@@ -60,16 +60,16 @@
extern void vex_assert_fail ( const HChar* expr, const HChar* file,
Int line, const HChar* fn );
__attribute__ ((__noreturn__))
-extern void vpanic ( HChar* str );
+extern void vpanic ( const HChar* str );
/* Printing */
__attribute__ ((format (printf, 1, 2)))
-extern UInt vex_printf ( HChar *format, ... );
+extern UInt vex_printf ( const HChar *format, ... );
__attribute__ ((format (printf, 2, 3)))
-extern UInt vex_sprintf ( HChar* buf, HChar *format, ... );
+extern UInt vex_sprintf ( HChar* buf, const HChar *format, ... );
/* String ops */