Expand memory sanitizer examples

Examples of using an uninitialized value or pointer.

Author: StableCoder

example/all/CMakeLists.txt

@@ -102,9 +102,15 @@ target_code_coverage(asan_use_after_scope AUTO ALL)
 add_test(asan_use_after_scope asan_use_after_scope)
 
 # Fails with MemorySanitizer
-add_executable(msanFail ../src/msan_fail.cpp)
-target_code_coverage(msanFail AUTO ALL)
-add_test(msan msanFail)
+add_executable(msan_uninitialized_value_used
+               ../src/msan/uninitialized_value_used.c)
+target_code_coverage(msan_uninitialized_value_used AUTO ALL)
+add_test(msan_uninitialized_value_used msan_uninitialized_value_used)
+
+add_executable(msan_uninitialized_pointer_used
+               ../src/msan/uninitialized_pointer_used.c)
+target_code_coverage(msan_uninitialized_pointer_used AUTO ALL)
+add_test(msan_uninitialized_pointer_used msan_uninitialized_pointer_used)
 
 # Fails with UndefinedBehaviourSanitizer
 add_executable(ubsanFail ../src/ubsan_fail.cpp)

example/src/msan/uninitialized_pointer_used.c

@@ -0,0 +1,8 @@
+// example of using an uninitialized pointer
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+    int *val;
+    printf("val: %i", *val);
+    return 0;
+}

example/src/msan/uninitialized_value_used.c

@@ -0,0 +1,8 @@
+// example of using an uninitialized value
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+    int val;
+    printf("val: %i", val);
+    return 0;
+}