Added stricter error checks by the compiler, and adapted all impacted code.

Primarily -
* Added "static" to static functions.
* Added proper signature with "void" to functions without arguments.
* Marked unused arguments with "(void)".
* Removed entirely unused static functions.
* Added "const" to preserve const-correctness.
* Added function prototypes for external functions.

examples/example_1/makefile

@@ -21,7 +21,26 @@ endif
 
 UNITY_ROOT=../..
 C_COMPILER=gcc
+
 CFLAGS=-std=c99
+CFLAGS += -Wall
+CFLAGS += -Wextra
+CFLAGS += -Werror 
+CFLAGS += -Wpointer-arith
+CFLAGS += -Wcast-align
+CFLAGS += -Wwrite-strings
+CFLAGS += -Wswitch-default
+CFLAGS += -Wunreachable-code
+CFLAGS += -Winit-self
+CFLAGS += -Wlogical-op
+CFLAGS += -Wmissing-field-initializers
+CFLAGS += -Wno-unknown-pragmas
+CFLAGS += -Wjump-misses-init
+CFLAGS += -Wstrict-prototypes
+CFLAGS += -Wundef
+CFLAGS += -Wunsafe-loop-optimizations
+CFLAGS += -Wold-style-definition
+
 TARGET_BASE1=test1
 TARGET_BASE2=test2
 TARGET1 = $(TARGET_BASE1)$(TARGET_EXTENSION)

examples/example_1/src/ProductionCode2.c

@@ -3,6 +3,8 @@
 
 char* ThisFunctionHasNotBeenTested(int Poor, char* LittleFunction)
 {
+  (void)Poor;
+  (void)LittleFunction;
   //Since There Are No Tests Yet, This Function Could Be Empty For All We Know.
   // Which isn't terribly useful... but at least we put in a TEST_IGNORE so we won't forget
   return (char*)0;

examples/example_1/test/test_runners/TestProductionCode2_Runner.c

@@ -12,18 +12,6 @@ extern void test_IgnoredTest(void);
 extern void test_AnotherIgnoredTest(void);
 extern void test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented(void);
 
-static void runTest(UnityTestFunction test)
-{
-  if (TEST_PROTECT())
-  {
-      setUp();
-      test();
-  }
-  if (TEST_PROTECT() && !TEST_IS_IGNORED)
-  {
-    tearDown();
-  }
-}
 void resetTest(void);
 void resetTest(void)
 {
@@ -36,7 +24,6 @@ int main(void)
 {
   UnityBegin("test/TestProductionCode2.c");
 
-  // RUN_TEST calls runTest
   RUN_TEST(test_IgnoredTest, 13);
   RUN_TEST(test_AnotherIgnoredTest, 18);
   RUN_TEST(test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented, 23);

examples/example_1/test/test_runners/TestProductionCode_Runner.c

@@ -14,18 +14,6 @@ extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounter
 extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void);
 extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void);
 
-static void runTest(UnityTestFunction test)
-{
-  if (TEST_PROTECT())
-  {
-      setUp();
-      test();
-  }
-  if (TEST_PROTECT() && !TEST_IS_IGNORED)
-  {
-    tearDown();
-  }
-}
 void resetTest(void);
 void resetTest(void)
 {
@@ -38,7 +26,6 @@ int main(void)
 {
   UnityBegin("test/TestProductionCode.c");
 
-  // RUN_TEST calls runTest
   RUN_TEST(test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode, 20);
   RUN_TEST(test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken, 30);
   RUN_TEST(test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue, 41);

examples/example_2/makefile

@@ -21,6 +21,28 @@ endif
 
 UNITY_ROOT=../..
 C_COMPILER=gcc
+
+CFLAGS = -std=c99
+CFLAGS += -Wall
+CFLAGS += -Wextra
+CFLAGS += -Werror 
+CFLAGS += -Wpointer-arith
+CFLAGS += -Wcast-align
+CFLAGS += -Wwrite-strings
+CFLAGS += -Wswitch-default
+CFLAGS += -Wunreachable-code
+CFLAGS += -Winit-self
+CFLAGS += -Wlogical-op
+CFLAGS += -Wmissing-field-initializers
+CFLAGS += -Wno-unknown-pragmas
+CFLAGS += -Wjump-misses-init
+CFLAGS += -Wstrict-prototypes
+CFLAGS += -Wundef
+CFLAGS += -Wunsafe-loop-optimizations
+CFLAGS += -Wold-style-definition
+CFLAGS += -Wmissing-prototypes
+CFLAGS += -Wmissing-declarations
+
 TARGET_BASE1=all_tests
 TARGET1 = $(TARGET_BASE1)$(TARGET_EXTENSION)
 SRC_FILES1=\
@@ -41,7 +63,7 @@ all: clean default
 default:
 #	ruby auto/generate_test_runner.rb test/TestProductionCode.c  test/test_runners/TestProductionCode_Runner.c
 #	ruby auto/generate_test_runner.rb test/TestProductionCode2.c test/test_runners/TestProductionCode2_Runner.c
-	$(C_COMPILER) $(INC_DIRS) $(SYMBOLS) $(SRC_FILES1) -o $(TARGET1)
+	$(C_COMPILER) $(CFLAGS) $(INC_DIRS) $(SYMBOLS) $(SRC_FILES1) -o $(TARGET1)
 	./$(TARGET1)
 
 clean:

examples/example_2/src/ProductionCode2.c

@@ -3,6 +3,8 @@
 
 char* ThisFunctionHasNotBeenTested(int Poor, char* LittleFunction)
 {
+  (void)Poor;
+  (void)LittleFunction;
   //Since There Are No Tests Yet, This Function Could Be Empty For All We Know.
   // Which isn't terribly useful... but at least we put in a TEST_IGNORE so we won't forget
   return (char*)0;

examples/example_3/makefile

@@ -21,7 +21,26 @@ endif
 
 UNITY_ROOT=../..
 C_COMPILER=gcc
+
 CFLAGS=-std=c99
+CFLAGS += -Wall
+CFLAGS += -Wextra
+CFLAGS += -Werror 
+CFLAGS += -Wpointer-arith
+CFLAGS += -Wcast-align
+CFLAGS += -Wwrite-strings
+CFLAGS += -Wswitch-default
+CFLAGS += -Wunreachable-code
+CFLAGS += -Winit-self
+CFLAGS += -Wlogical-op
+CFLAGS += -Wmissing-field-initializers
+CFLAGS += -Wno-unknown-pragmas
+CFLAGS += -Wjump-misses-init
+CFLAGS += -Wstrict-prototypes
+CFLAGS += -Wundef
+CFLAGS += -Wunsafe-loop-optimizations
+CFLAGS += -Wold-style-definition
+
 TARGET_BASE1=test1
 TARGET_BASE2=test2
 TARGET1 = $(TARGET_BASE1)$(TARGET_EXTENSION)

examples/example_3/src/ProductionCode2.c

@@ -3,6 +3,8 @@
 
 char* ThisFunctionHasNotBeenTested(int Poor, char* LittleFunction)
 {
+  (void)Poor;
+  (void)LittleFunction;
   //Since There Are No Tests Yet, This Function Could Be Empty For All We Know.
   // Which isn't terribly useful... but at least we put in a TEST_IGNORE so we won't forget
   return (char*)0;

examples/example_3/test/no_ruby/TestProductionCode2_Runner.c

@@ -12,18 +12,6 @@ extern void test_IgnoredTest(void);
 extern void test_AnotherIgnoredTest(void);
 extern void test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented(void);
 
-static void runTest(UnityTestFunction test)
-{
-  if (TEST_PROTECT())
-  {
-      setUp();
-      test();
-  }
-  if (TEST_PROTECT() && !TEST_IS_IGNORED)
-  {
-    tearDown();
-  }
-}
 void resetTest(void);
 void resetTest(void)
 {
@@ -36,7 +24,6 @@ int main(void)
 {
   UnityBegin("test/TestProductionCode2.c");
 
-  // RUN_TEST calls runTest
   RUN_TEST(test_IgnoredTest, 13);
   RUN_TEST(test_AnotherIgnoredTest, 18);
   RUN_TEST(test_ThisFunctionHasNotBeenTested_NeedsToBeImplemented, 23);

examples/example_3/test/no_ruby/TestProductionCode_Runner.c

@@ -14,18 +14,6 @@ extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounter
 extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValueAgain(void);
 extern void test_FunctionWhichReturnsLocalVariable_ShouldReturnCurrentCounter_ButFailsBecauseThisTestIsActuallyFlawed(void);
 
-static void runTest(UnityTestFunction test)
-{
-  if (TEST_PROTECT())
-  {
-      setUp();
-      test();
-  }
-  if (TEST_PROTECT() && !TEST_IS_IGNORED)
-  {
-    tearDown();
-  }
-}
 void resetTest(void);
 void resetTest(void)
 {
@@ -38,7 +26,6 @@ int main(void)
 {
   UnityBegin("test/TestProductionCode.c");
 
-  // RUN_TEST calls runTest
   RUN_TEST(test_FindFunction_WhichIsBroken_ShouldReturnZeroIfItemIsNotInList_WhichWorksEvenInOurBrokenCode, 20);
   RUN_TEST(test_FindFunction_WhichIsBroken_ShouldReturnTheIndexForItemsInList_WhichWillFailBecauseOurFunctionUnderTestIsBroken, 30);
   RUN_TEST(test_FunctionWhichReturnsLocalVariable_ShouldReturnTheCurrentCounterValue, 41);

extras/fixture/src/unity_fixture.c

@@ -17,10 +17,12 @@ int (*outputChar)(int) = putchar;
 
 int verbose = 0;
 
+void setUp(void);
+void tearDown(void);
 void setUp(void)    { /*does nothing*/ }
 void tearDown(void) { /*does nothing*/ }
 
-void announceTestRun(unsigned int runNumber)
+static void announceTestRun(unsigned int runNumber)
 {
     UnityPrint("Unity test run ");
     UnityPrintNumber(runNumber+1);
@@ -29,7 +31,7 @@ void announceTestRun(unsigned int runNumber)
     UNITY_OUTPUT_CHAR('\n');
 }
 
-int UnityMain(int argc, char* argv[], void (*runAllTests)(void))
+int UnityMain(int argc, const char* argv[], void (*runAllTests)(void))
 {
     int result = UnityGetCommandLineOptions(argc, argv);
     unsigned int r;
@@ -65,7 +67,7 @@ static int groupSelected(const char* group)
     return selected(UnityFixture.GroupFilter, group);
 }
 
-static void runTestCase()
+static void runTestCase(void)
 {
 
 }
@@ -132,13 +134,13 @@ void UnityIgnoreTest(const char * printableName)
 static int malloc_count;
 static int malloc_fail_countdown = MALLOC_DONT_FAIL;
 
-void UnityMalloc_StartTest()
+void UnityMalloc_StartTest(void)
 {
     malloc_count = 0;
     malloc_fail_countdown = MALLOC_DONT_FAIL;
 }
 
-void UnityMalloc_EndTest()
+void UnityMalloc_EndTest(void)
 {
     malloc_fail_countdown = MALLOC_DONT_FAIL;
     if (malloc_count != 0)
@@ -274,7 +276,7 @@ enum {MAX_POINTERS=50};
 static PointerPair pointer_store[MAX_POINTERS];
 static int pointer_index = 0;
 
-void UnityPointer_Init()
+void UnityPointer_Init(void)
 {
     pointer_index = 0;
 }
@@ -290,7 +292,7 @@ void UnityPointer_Set(void ** pointer, void * newValue)
     pointer_index++;
 }
 
-void UnityPointer_UndoAllSets()
+void UnityPointer_UndoAllSets(void)
 {
     while (pointer_index > 0)
     {
@@ -301,12 +303,12 @@ void UnityPointer_UndoAllSets()
     }
 }
 
-int UnityFailureCount()
+int UnityFailureCount(void)
 {
     return Unity.TestFailures;
 }
 
-int UnityGetCommandLineOptions(int argc, char* argv[])
+int UnityGetCommandLineOptions(int argc, const char* argv[])
 {
     int i;
     UnityFixture.Verbose = 0;
@@ -360,7 +362,7 @@ int UnityGetCommandLineOptions(int argc, char* argv[])
     return 0;
 }
 
-void UnityConcludeFixtureTest()
+void UnityConcludeFixtureTest(void)
 {
     if (Unity.CurrentTestIgnored)
     {

extras/fixture/src/unity_fixture.h

@@ -13,19 +13,22 @@
 #include "unity_fixture_malloc_overrides.h"
 #include "unity_fixture_internals.h"
 
-int UnityMain(int argc, char* argv[], void (*runAllTests)(void));
+int UnityMain(int argc, const char* argv[], void (*runAllTests)(void));
 
 
 #define TEST_GROUP(group)\
     static const char* TEST_GROUP_##group = #group
 
-#define TEST_SETUP(group) void TEST_##group##_SETUP(void)
+#define TEST_SETUP(group) void TEST_##group##_SETUP(void);\
+    void TEST_##group##_SETUP(void)
 
-#define TEST_TEAR_DOWN(group) void TEST_##group##_TEAR_DOWN(void)
+#define TEST_TEAR_DOWN(group) void TEST_##group##_TEAR_DOWN(void);\
+    void TEST_##group##_TEAR_DOWN(void)
 
 
 #define TEST(group, name) \
     void TEST_##group##_##name##_(void);\
+    void TEST_##group##_##name##_run(void);\
     void TEST_##group##_##name##_run(void)\
     {\
         UnityTestRunner(TEST_##group##_SETUP,\
@@ -39,6 +42,7 @@ int UnityMain(int argc, char* argv[], void (*runAllTests)(void));
 
 #define IGNORE_TEST(group, name) \
     void TEST_##group##_##name##_(void);\
+    void TEST_##group##_##name##_run(void);\
     void TEST_##group##_##name##_run(void)\
     {\
         UnityIgnoreTest("IGNORE_TEST(" #group ", " #name ")");\
@@ -60,7 +64,7 @@ int UnityMain(int argc, char* argv[], void (*runAllTests)(void));
     {\
         TEST_##group##_GROUP_RUNNER_runAll();\
     }\
-    void TEST_##group##_GROUP_RUNNER_runAll()
+    void TEST_##group##_GROUP_RUNNER_runAll(void)
 
 //Call this from main
 #define RUN_TEST_GROUP(group)\

extras/fixture/src/unity_fixture_internals.h

@@ -29,7 +29,7 @@ void UnityIgnoreTest(const char * printableName);
 void UnityMalloc_StartTest(void);
 void UnityMalloc_EndTest(void);
 int UnityFailureCount(void);
-int UnityGetCommandLineOptions(int argc, char* argv[]);
+int UnityGetCommandLineOptions(int argc, const char* argv[]);
 void UnityConcludeFixtureTest(void);
 
 void UnityPointer_Set(void ** ptr, void * newValue);

extras/fixture/src/unity_fixture_malloc_overrides.h

@@ -13,4 +13,9 @@
 #define realloc unity_realloc
 #define free    unity_free
 
+void* unity_malloc(size_t size);
+void* unity_calloc(size_t num, size_t size);
+void* unity_realloc(void * oldMem, size_t size);
+void unity_free(void * mem);
+
 #endif /* UNITY_FIXTURE_MALLOC_OVERRIDES_H_ */

extras/fixture/test/main/AllTests.c

@@ -7,14 +7,14 @@
 
 #include "unity_fixture.h"
 
-static void runAllTests()
+static void runAllTests(void)
 {
     RUN_TEST_GROUP(UnityFixture);
     RUN_TEST_GROUP(UnityCommandOptions);
     RUN_TEST_GROUP(LeakDetection)
 }
 
-int main(int argc, char* argv[])
+int main(int argc, const char* argv[])
 {
     return UnityMain(argc, argv, runAllTests);
 }

extras/fixture/test/unity_fixture_Test.c

@@ -158,7 +158,7 @@ TEST_TEAR_DOWN(UnityCommandOptions)
 }
 
 
-static char* noOptions[] = {
+static const char* noOptions[] = {
         "testrunner.exe"
 };
 
@@ -171,7 +171,7 @@ TEST(UnityCommandOptions, DefaultOptions)
     TEST_ASSERT_EQUAL(1, UnityFixture.RepeatCount);
 }
 
-static char* verbose[] = {
+static const char* verbose[] = {
         "testrunner.exe",
         "-v"
 };
@@ -182,7 +182,7 @@ TEST(UnityCommandOptions, OptionVerbose)
     TEST_ASSERT_EQUAL(1, UnityFixture.Verbose);
 }
 
-static char* group[] = {
+static const char* group[] = {
         "testrunner.exe",
         "-g", "groupname"
 };
@@ -193,7 +193,7 @@ TEST(UnityCommandOptions, OptionSelectTestByGroup)
     STRCMP_EQUAL("groupname", UnityFixture.GroupFilter);
 }
 
-static char* name[] = {
+static const char* name[] = {
         "testrunner.exe",
         "-n", "testname"
 };
@@ -204,7 +204,7 @@ TEST(UnityCommandOptions, OptionSelectTestByName)
     STRCMP_EQUAL("testname", UnityFixture.NameFilter);
 }
 
-static char* repeat[] = {
+static const char* repeat[] = {
         "testrunner.exe",
         "-r", "99"
 };
@@ -221,7 +221,7 @@ TEST(UnityCommandOptions, OptionSelectRepeatTestsSpecificCount)
     TEST_ASSERT_EQUAL(99, UnityFixture.RepeatCount);
 }
 
-static char* multiple[] = {
+static const char* multiple[] = {
         "testrunner.exe",
         "-v",
         "-g", "groupname",
@@ -238,7 +238,7 @@ TEST(UnityCommandOptions, MultipleOptions)
     TEST_ASSERT_EQUAL(98, UnityFixture.RepeatCount);
 }
 
-static char* dashRNotLast[] = {
+static const char* dashRNotLast[] = {
         "testrunner.exe",
         "-v",
         "-g", "gggg",
@@ -255,7 +255,7 @@ TEST(UnityCommandOptions, MultipleOptionsDashRNotLastAndNoValueSpecified)
     TEST_ASSERT_EQUAL(2, UnityFixture.RepeatCount);
 }
 
-static char* unknownCommand[] = {
+static const char* unknownCommand[] = {
         "testrunner.exe",
         "-v",
         "-g", "groupname",

extras/fixture/test/unity_output_Spy.c

@@ -25,7 +25,7 @@ void UnityOutputCharSpy_Create(int s)
     memset(buffer, 0, size);
 }
 
-void UnityOutputCharSpy_Destroy()
+void UnityOutputCharSpy_Destroy(void)
 {
     size = 0;
     free(buffer);
@@ -45,7 +45,7 @@ int UnityOutputCharSpy_OutputChar(int c)
     return c;
 }
 
-const char * UnityOutputCharSpy_Get()
+const char * UnityOutputCharSpy_Get(void)
 {
     return buffer;
 }

extras/fixture/test/unity_output_Spy.h

@@ -9,9 +9,9 @@
 #define D_unity_output_Spy_H
 
 void UnityOutputCharSpy_Create(int s);
-void UnityOutputCharSpy_Destroy();
+void UnityOutputCharSpy_Destroy(void);
 int  UnityOutputCharSpy_OutputChar(int c);
-const char * UnityOutputCharSpy_Get();
+const char * UnityOutputCharSpy_Get(void);
 void UnityOutputCharSpy_Enable(int enable);
 
 #endif

src/unity.c

@@ -271,7 +271,7 @@ void UnityPrintOk(void)
 }
 
 //-----------------------------------------------
-void UnityTestResultsBegin(const char* file, const UNITY_LINE_TYPE line)
+static void UnityTestResultsBegin(const char* file, const UNITY_LINE_TYPE line)
 {
     UnityPrint(file);
     UNITY_OUTPUT_CHAR(':');
@@ -282,7 +282,7 @@ void UnityTestResultsBegin(const char* file, const UNITY_LINE_TYPE line)
 }
 
 //-----------------------------------------------
-void UnityTestResultsFailBegin(const UNITY_LINE_TYPE line)
+static void UnityTestResultsFailBegin(const UNITY_LINE_TYPE line)
 {
     UnityTestResultsBegin(Unity.TestFile, line);
     UnityPrint(UnityStrFail);
@@ -312,7 +312,7 @@ void UnityConcludeTest(void)
 }
 
 //-----------------------------------------------
-void UnityAddMsgIfSpecified(const char* msg)
+static void UnityAddMsgIfSpecified(const char* msg)
 {
     if (msg)
     {
@@ -322,7 +322,7 @@ void UnityAddMsgIfSpecified(const char* msg)
 }
 
 //-----------------------------------------------
-void UnityPrintExpectedAndActualStrings(const char* expected, const char* actual)
+static void UnityPrintExpectedAndActualStrings(const char* expected, const char* actual)
 {
     UnityPrint(UnityStrExpected);
     if (expected != NULL)
@@ -352,7 +352,7 @@ void UnityPrintExpectedAndActualStrings(const char* expected, const char* actual
 // Assertion & Control Helpers
 //-----------------------------------------------
 
-int UnityCheckArraysForNull(UNITY_PTR_ATTRIBUTE const void* expected, UNITY_PTR_ATTRIBUTE const void* actual, const UNITY_LINE_TYPE lineNumber, const char* msg)
+static int UnityCheckArraysForNull(UNITY_PTR_ATTRIBUTE const void* expected, UNITY_PTR_ATTRIBUTE const void* actual, const UNITY_LINE_TYPE lineNumber, const char* msg)
 {
     //return true if they are both NULL
     if ((expected == NULL) && (actual == NULL))
@@ -1102,6 +1102,8 @@ void UnityIgnore(const char* msg, const UNITY_LINE_TYPE line)
 
 //-----------------------------------------------
 #if defined(UNITY_WEAK_ATTRIBUTE)
+    void setUp(void);
+    void tearDown(void);
     UNITY_WEAK_ATTRIBUTE void setUp(void) { }
     UNITY_WEAK_ATTRIBUTE void tearDown(void) { }
 #elif defined(UNITY_WEAK_PRAGMA)

test/targets/gcc_auto_stdint.yml

@@ -10,6 +10,22 @@ compiler:
     - '-Wno-address'
     - '-std=c99'
     - '-pedantic'
+    - '-Wextra'
+    - '-Werror'
+    - '-Wpointer-arith'
+    - '-Wcast-align'
+    - '-Wwrite-strings'
+    - '-Wswitch-default'
+    - '-Wunreachable-code'
+    - '-Winit-self'
+    - '-Wlogical-op'
+    - '-Wmissing-field-initializers'
+    - '-Wno-unknown-pragmas'
+    - '-Wjump-misses-init'
+    - '-Wstrict-prototypes'
+    - '-Wundef'
+    - '-Wunsafe-loop-optimizations'
+    - '-Wold-style-definition'
   includes:
     prefix: '-I'
     items: