Program crashes - Memory leak Detected, and i have no idea why

Question

its seems it was all about memory leak, I have used the function _CrtDumpMemoryLeaks(); before and after malloc function. before the malloc I get nothing, and when _CrtDumpMemoryLeaks(); runs after the malloc I get the following:

 Detected memory leaks!
                Dumping objects ->
                c:\users\omers66\documents\visual studio 2013\projects\assigment4\assigment4         \assignment4.c(150) : {66} normal block at 0x00F57338, 20 bytes long.
                Data: <                > CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD 
                   Object dump complete.
                 The program '[7588] assigment4.exe' has exited with code 0 (0x0).

I guess it means I have an issue with line 150? But I can't see anything wrong, here is the code in that section:

struct Unit* add_unit(struct Unit* tree, int base, int newId, char*name)
{
    _CrtDumpMemoryLeaks();
    struct UnitList* tempUnitList;
    struct Unit* temp;
    struct Unit* returnValue = NULL;
    char* helpName;
    if (tree == NULL)
    {
        temp = ((struct Unit*)(malloc(sizeof(struct Unit))));     (line 150)
        _CrtDumpMemoryLeaks();

can you see anything wrong?

Answer 1

well, eventually It was all an issue with not giving a string enough space with malloc, I forgot to add an extra byte for the '\0' because I used sizeof according to specific string