CODEWITHSUNDEEP
cwindowsdriver
raji
raji

Reputation: 101

unresolved external symbol _malloc

I am trying to create a driver using WDK.I need to use malloc in that driver.When I try to use that I got an error like malloc unresolved external symbol.I think that I have to include some library.But I am not sure .How can I resolve this error?

Upvotes: 0

Views: 5641

Answers (1)

selbie
selbie

Reputation: 104589

Windows Device drivers don't normally link with the C-Runtime. The build environment for the DDK/WDK doesn't link with MSVCRT. But there are memory allocation routines that can be used in kernel and driver programming.

See this link for more details.

Side note:

I'm a bit worried that you did not mention that "free" was also an unresolved symbol. That suggests that you never call it, hence a memory leak in device driver code. ;) Or does the WDK pull in an implementation of free() from somewhere?

Upvotes: 9

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