Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning (level 4) C4714
Collapse the table of content
Expand the table of content

Compiler Warning (level 4) C4714

Error Message

function 'function' marked as __forceinline not inlined

The given function was selected for inline expansion, but the compiler did not perform the inlining.

Although __forceinline is a stronger indication to the compiler than __inline, inlining is still performed at the compiler's discretion, but no heuristics are used to determine the benefits from inlining this function.

In some cases, the compiler will not inline a particular function for mechanical reasons. For example, the compiler will not inline:

  • A function if it would result in mixing both SEH and C++ EH.

  • Some functions with copy constructed objects passed by value when -GX/EHs/EHa is on.

  • Functions returning an unwindable object by value when -GX/EHs/EHa is on.

  • Functions with inline assembly when compiling without -Og/Ox/O1/O2.

  • Functions with a variable argument list.

  • A function with a try (C++ exception handling) statement.

The following sample generates C4714:

// C4714.cpp
// compile with: /Ob1 /GX /W4
__forceinline void func1()
   catch (...)

void func2()
   func1();   // C4714

int main()

Community Additions

© 2015 Microsoft