From 2c06b8d75023df1b3a5b92030a2a482fe3b2ce72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Svensson?= <bjorn.a.svensson@est.tech>
Date: Fri, 22 Sep 2023 14:42:56 +0200
Subject: [PATCH] Fix Clang compiler warnings

When building using a newer Clang with additional diagnostics
the following warnings are given:
 -Wunused-but-set-variable
 -Wstrict-prototypes
These issues are corrected in this commit.

Reproducable using:
CC="clang-13" CFLAGS="-Wall -pedantic" cmake ..
---
 src/slug.c         | 2 --
 tests/bench.c      | 6 +++---
 tests/bench.h      | 4 ++--
 tests/check_tree.c | 2 +-
 4 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/slug.c b/src/slug.c
index 5f89207..6974f53 100644
--- a/src/slug.c
+++ b/src/slug.c
@@ -90,7 +90,6 @@ int r3_slug_parse(r3_slug_t *s, const char *needle, int needle_len, const char *
         return 0;
     }
 
-    int cnt = 0;
     int state = 0;
     const char * p = offset;
 
@@ -122,7 +121,6 @@ int r3_slug_parse(r3_slug_t *s, const char *needle, int needle_len, const char *
             if (s->pattern) {
                 s->pattern_len = p - s->pattern;
             }
-            cnt++;
             state--;
             p++;
             break;
diff --git a/tests/bench.c b/tests/bench.c
index 9f961e0..dd8ecc3 100644
--- a/tests/bench.c
+++ b/tests/bench.c
@@ -17,7 +17,7 @@
 
 
 
-unsigned long unixtime() {
+unsigned long unixtime(void) {
     struct timeval tp;
     if (gettimeofday((struct timeval *) &tp, (NULL)) == 0) {
         return tp.tv_sec;
@@ -25,7 +25,7 @@ unsigned long unixtime() {
     return 0;
 }
 
-double microtime() {
+double microtime(void) {
     struct timeval tp;
     long sec = 0L;
     double msec = 0.0;
@@ -93,7 +93,7 @@ void bench_append_csv(char *filename, int countOfB, ...) {
 
 
 
-int main()
+int main(void)
 {
     R3Node * n = r3_tree_create(1);
 
diff --git a/tests/bench.h b/tests/bench.h
index 6bbad50..08680d6 100644
--- a/tests/bench.h
+++ b/tests/bench.h
@@ -22,9 +22,9 @@ typedef struct {
     double end;
 } bench;
 
-unsigned long unixtime();
+unsigned long unixtime(void);
 
-double microtime();
+double microtime(void);
 
 void bench_start(bench *b);
 
diff --git a/tests/check_tree.c b/tests/check_tree.c
index b2ddf8c..19b6c14 100644
--- a/tests/check_tree.c
+++ b/tests/check_tree.c
@@ -304,7 +304,7 @@ START_TEST (test_node_construct_and_free)
 }
 END_TEST
 
-static R3Node * create_simple_str_tree() {
+static R3Node * create_simple_str_tree(void) {
     R3Node * n;
     n = r3_tree_create(10);
     r3_tree_insert_path(n, "/zoo", NULL);