static_assert

 

C

Language

headers

Type support

Dynamic memory management

Error handling

Program utilities

Variadic function support

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

Technical Specifications

 

Error handling

Error codes

Error codes

errno

Assertions

assert

static_assert (C11)

Bounds checking

set_constraint_handler_s (C11)

abort_handler_s (C11)

ignore_handler_s (C11)

 

Defined in header <assert.h>
#define static_assert _Static_assert

This convenience macro expands to the keyword _Static_assert

Example

Run this code

#include <assert.h>
int main(void)
{
    static_assert(2 + 2 == 4, "2+2 isn't 4");      // well-formed
    static_assert(sizeof(int) < sizeof(char),
                 "this program requires that int is less than char"); // compile-time error
}

References

• C11 standard (ISO/IEC 9899:2011):

• 7.2/3 Diagnostics <assert.h> (p: 186)

See also

C++ documentation for Static Assertion