@@ -70,6 +70,30 @@ about them. The improvements since the 3.4 release include:
- New warning `-Wabsolute-value`: Clang warns about incorrect or useless usage
of the absolute functions (`abs`, `fabsf`, etc).
.. code-block:: c
#include <stdlib.h>
void foo() {
unsigned int i=0;
abs(i);
}
returns
`warning: taking the absolute value of unsigned type 'unsigned int' has no effect [-Wabsolute-value]`
or
.. code-block:: c
#include <stdlib.h>
void plop() {
long long i=0;
abs(i);
}
returns
`warning: absolute value function 'abs' given an argument of type 'long long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value] use function 'llabs' instead`
