Valgrind 检测到内存泄漏，找不到 C

Question

Valgrind is finding memory leaks but i can't seem to pinpoint them, i'm hope-full someone here can help me:

main calls are Dictionary* dictionary = initDictionary();

Answer 1

Your initDictionary doesn't return the pointer dictionary anywhere.

That means when you do

Dictionary* dictionary = initDictionary();

the value of dictionary will be indeterminate (seemingly random or garbage), and dereferencing this pointer or passing it to free will result in undefined behavior .

You solve this by adding a simple

return dictionary;

at the end of the initDictionary function.

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If your compiler doesn't warn you about not returning anything from the function, you need to enable more verbose warnings. Using gcc or clang I recommend the options -Wall -Wextra -Wpedantic when building. For MSVC use /W4 .