Update Leak sanitizer examples

Expand from just a direct leak, to both a direct and indirect leak
example programs.

Author: StableCoder

example/all/CMakeLists.txt

@@ -61,9 +61,13 @@ endif()
 add_test(tsan tsanFail)
 
 # Fails with LeakSanitizer
-add_executable(lsanFail ../src/lsan_fail.c)
-target_code_coverage(lsanFail AUTO ALL)
-add_test(lsan lsanFail)
+add_executable(lsan_direct_leak ../src/lsan/direct_leak.c)
+target_code_coverage(lsan_direct_leak AUTO ALL)
+add_test(lsan_direct_leak lsan_direct_leak)
+
+add_executable(lsan_indirect_leak ../src/lsan/indirect_leak.c)
+target_code_coverage(lsan_indirect_leak AUTO ALL)
+add_test(lsan_indirect_leak lsan_indirect_leak)
 
 # Fails with AddressSanitizer
 if(EXAMPLE_USE_SANITIZER STREQUAL "address")

example/src/lsan/direct_leak.c

@@ -0,0 +1,8 @@
+// example of a direct memory leak, where no pointer to the memory exists
+#include <stdlib.h>
+
+int main() {
+    void *p = malloc(7);
+    p = 0; // failure point
+    return 0;
+}

example/src/lsan/indirect_leak.c

@@ -0,0 +1,7 @@
+// example of an indirect memory leak, where a pointer to the memory still exists
+#include <stdlib.h>
+
+int main() {
+    void *p = malloc(7);
+    return 0;
+} // failure point