use a C99 bool for nop’s chkOnly flag

The semantics of this flag were already a boolean value, so we can use the type
system to more obviously indicate this.

diff --git a/cmd/tools/nop.c b/cmd/tools/nop.c
index 92f2f45416cfc162198e9772deba3029e3f0725c..5dea43c864b3faa33aba7665f116073aa6de6931 100644 (file)
--- a/cmd/tools/nop.c
+++ b/cmd/tools/nop.c
@@ -12,6 +12,7 @@
 
 #include <cgraph/cgraph.h>
 #include <ingraphs/ingraphs.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #ifdef HAVE_UNISTD_H
@@ -21,7 +22,7 @@
 #include <getopt.h>
 
 char **Files;
-int chkOnly;
+bool chkOnly;
 
 static const char useString[] = "Usage: nop [-p?] <files>\n\
   -p - check for valid DOT\n\
@@ -42,7 +43,7 @@ static void init(int argc, char *argv[])
     while ((c = getopt(argc, argv, "p?")) != -1) {
        switch (c) {
        case 'p':
-           chkOnly = 1;
+           chkOnly = true;
            break;
        case '?':
            if (optopt == '\0' || optopt == '?')