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.

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_ */