Fix vfprintf issue with for the new format-overflow warning

Author: pnoltes

bundles/logging/log_admin/gtest/src/LogAdminTestSuite.cc

@@ -290,9 +290,10 @@ static void logSinkFunction(void *handle, celix_log_level_e level, long logServi
         EXPECT_STREQ("test::Log1", logServiceName);
     }
 
-    vfprintf(stdout, format, formatArgs);
-
-    fprintf(stdout, "\n");
+    if (format) {
+        vfprintf(stdout, format, formatArgs);
+        fprintf(stdout, "\n");
+    }
 }
 
 TEST_F(LogBundleTestSuite, LogServiceAndSink) {

bundles/logging/log_helper/gtest/src/LogHelperTestSuite.cc

@@ -69,8 +69,10 @@ TEST_F(LogHelperTestSuite, LogToLogSvc) {
     logSvc.vlogDetails= [](void *handle, celix_log_level_e, const char*, const char*, int, const char *format, va_list formatArgs) {
         auto* c = static_cast<std::atomic<size_t>*>(handle);
         c->fetch_add(1);
-        vfprintf(stderr, format, formatArgs);
-        fprintf(stderr, "\n");
+        if (format) {
+            vfprintf(stderr, format, formatArgs);
+            fprintf(stderr, "\n");
+        }
     };
 
     auto* props = celix_properties_create();

conanfile.py

@@ -222,7 +222,7 @@ def build_requirements(self):
         if self.options.enable_testing:
             self.test_requires("gtest/1.17.0")
         if self.options.enable_ccache:
-            self.build_requires("ccache/4.7.4")
+            self.build_requires("ccache/[>=4.8 <=4.10.2]")
         if self.options.enable_benchmarking:
             self.test_requires("benchmark/[>=1.6.2]")
 

libs/framework/gtest/src/ScheduledEventTestSuite.cc

@@ -720,8 +720,10 @@ TEST_F(ScheduledEventTestSuite, ScheduledEventTimeoutLogTest) {
             output = stderr;
         }
         fprintf(output, "%s: ", celix_logLevel_toString(level));
-        vfprintf(output, format, args);
-        fprintf(output, "\n");
+        if (format) {
+            vfprintf(output, format, args);
+            fprintf(output, "\n");
+        }
     };
     celix_framework_setLogCallback(fw->getCFramework(), &logCount, logCallback);
 

libs/utils/src/celix_log_utils.c

@@ -86,7 +86,7 @@ void celix_logUtils_vLogToStdout(const char *logName, celix_log_level_e level, c
 static pthread_mutex_t globalMutex = PTHREAD_MUTEX_INITIALIZER;
 
 void celix_logUtils_vLogToStdoutDetails(const char *logName, celix_log_level_e level, const char* file, const char* function, int line, const char *format, va_list formatArgs) {
-    if (level == CELIX_LOG_LEVEL_DISABLED) {
+    if (format == NULL || level == CELIX_LOG_LEVEL_DISABLED) {
         //silently ignore
         return;
     }