enabled and mitigated debug warnings in cfg tests (#5840)

Author: firewave

cfg/cairo.cfg

@@ -6,6 +6,7 @@
   <define name="cairo_bool_t" value="int"/>
   <!-- TODO: Configure cairo_status_t as an enum when this is implemented in Cppcheck -->
   <podtype name="cairo_status_t"/>
+  <define name="CAIRO_STATUS_READ_ERROR" value="10"/>
   <!-- ########## cairo Macros / Defines ########## -->
   <define name="CAIRO_HAS_MIME_SURFACE" value="1"/>
   <define name="CAIRO_MIME_TYPE_CCITT_FAX" value="&quot;image/g3fax&quot;"/>

cfg/gtk.cfg

@@ -2,6 +2,8 @@
 <!-- This file once has been generated automatically. See https://github.com/scriptum/cppcheck-libs -->
 <!-- Now it is maintained and extended manually. -->
 <def format="2">
+  <define name="TRUE" value="(!FALSE)"/>
+  <define name="FALSE" value="(0)"/>
   <define name="g_return_if_fail(expr)" value="do{if(!(expr)){return;}}while(0)"/>
   <define name="g_return_val_if_fail(expr, val)" value="do{if(!(expr)){return val;}}while(0)"/>
   <define name="g_return_if_reached()" value="do{return;}while(0)"/>

test/CMakeLists.txt

@@ -113,17 +113,22 @@ if (BUILD_TESTS)
             else()
                 # TODO: remove missingInclude disabling when it no longer is implied by --enable=information
                 # TODO: add syntax check
+                # need to suppress unmatchedSuppression in case valueFlowBailout is not reported
                 add_test(NAME cfg-${TEST_NAME}
                         COMMAND $<TARGET_FILE:cppcheck>
+                        --library=${LIBRARY}
                         --check-library
                         --platform=${PLATFORM}
-                        --library=${LIBRARY}
                         --enable=style,information
                         --inconclusive
                         --force
                         --error-exitcode=1
                         --disable=missingInclude
                         --inline-suppr
+                        --template="{file}:{line}:{severity}:{id}:{message}"
+                        --debug-warnings
+                        --suppress=valueFlowBailout
+                        --suppress=unmatchedSuppression
                         ${CMAKE_CURRENT_SOURCE_DIR}/cfg/${CFG_TEST}
                 )
             endif()

test/cfg/boost.cpp

@@ -83,6 +83,7 @@ void macros()
     BOOST_PP_REPEAT(5, DECL, int x)
 
     BOOST_SCOPED_ENUM_DECLARE_BEGIN(future_errc) {
+        // cppcheck-suppress valueFlowBailoutIncompleteVar
         no_state
     }
     BOOST_SCOPED_ENUM_DECLARE_END(future_errc)

test/cfg/gnu.c

@@ -316,6 +316,7 @@ void valid_code(int argInt1, va_list valist_arg, const int * parg)
 
     if (__alignof__(int) == 4) {}
 
+    // cppcheck-suppress valueFlowBailoutIncompleteVar
     const void * p_mmap = mmap(NULL, 1, PROT_NONE, MAP_ANONYMOUS | MAP_SHARED, -1, 0);
     printf("%p", p_mmap);
     munmap(p_mmap, 1);

test/cfg/googletest.cpp

@@ -15,12 +15,15 @@ namespace ExampleNamespace {
     constexpr long long TOLERANCE = 10;
 
     // #9397 syntaxError when MATCHER_P is not known
+    // cppcheck-suppress symbolDatabaseWarning
     MATCHER_P(ExampleMatcherPTest, expected, "")
     {
+        // cppcheck-suppress valueFlowBailoutIncompleteVar
         return ((arg <= (expected + TOLERANCE)) && (arg >= (expected - TOLERANCE)));
     }
 
     // syntaxError when MATCHER is not known
+    // cppcheck-suppress symbolDatabaseWarning
     MATCHER(ExampleMatcherTest, "")
     {
         return (arg == TOLERANCE);

test/cfg/gtk.c

@@ -289,6 +289,7 @@ void g_new_if_test()
     };
 
     const struct a * pNew3;
+    // cppcheck-suppress valueFlowBailoutIncompleteVar
     if (pNew3 = g_new(struct a, 6)) {
         printf("%p", pNew3);
     }

test/cfg/libcurl.c

@@ -15,6 +15,7 @@ void validCode()
     CURL *curl = curl_easy_init();
     if (curl) {
         CURLcode res;
+        // cppcheck-suppress valueFlowBailoutIncompleteVar
         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
         res = curl_easy_perform(curl);
         if (res != CURLE_OK) {

test/cfg/opencv2.cpp

@@ -14,6 +14,7 @@
 void validCode(const char* argStr)
 {
     cv::Mat image;
+    // cppcheck-suppress valueFlowBailoutIncompleteVar
     image = cv::imread(argStr, cv::IMREAD_COLOR);
     if (!image.data) {
         printf("No image data \n");

test/cfg/posix.c

@@ -895,6 +895,7 @@ void validCode(va_list valist_arg1, va_list valist_arg2)
     void *ptr;
     if (posix_memalign(&ptr, sizeof(void *), sizeof(void *)) == 0)
         free(ptr);
+    // cppcheck-suppress valueFlowBailoutIncompleteVar
     syslog(LOG_ERR, "err %u", 0U);
     syslog(LOG_WARNING, "warn %d %d", 5, 1);
     vsyslog(LOG_EMERG, "emerg %d", valist_arg1);