Fix gcc, sparse & lint warnings

cppsetup.c:74:9: warning: Using plain integer as NULL pointer

parse.c: In function `gobble':
parse.c:94: warning: int format, long int arg (arg 2)
parse.c: In function `find_includes':
parse.c:641: warning: int format, long int arg (arg 2)
parse.c:664: warning: int format, long int arg (arg 2)
parse.c:677: warning: int format, long int arg (arg 2)
parse.c:684: warning: int format, long int arg (arg 2)

pr.c: In function `add_include':
pr.c:57: warning: int format, long int arg (arg 4)
pr.c:59: warning: int format, long int arg (arg 3)

declared global, could be static
    sig_act             main.c(142)
    predefs             main.c:imakemdep.h(51)

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/def.h b/def.h
index ca37e73..6c705a1 100644
--- a/def.h
+++ b/def.h
@@ -176,6 +176,6 @@ int                     cppsetup(const char *filename,
 				 struct inclist *inc);
 
 
-extern void fatalerr(const char *, ...);
-extern void warning(const char *, ...);
-extern void warning1(const char *, ...);
+extern void fatalerr(const char *, ...) _X_ATTRIBUTE_PRINTF(1, 2);
+extern void warning(const char *, ...) _X_ATTRIBUTE_PRINTF(1, 2);
+extern void warning1(const char *, ...) _X_ATTRIBUTE_PRINTF(1, 2);