Macro valgrind_printf 

macro_rules! valgrind_printf {
    ($($args:tt)*) => { ... };
}

Available on crate feature alloc only.

Prints to the Valgrind log.

This macro requires the alloc feature. In allocation-free builds, use valgrind_print instead.

This macro is a safe variant of the VALGRIND_PRINTF function, checking for \0 bytes in the formatting string. However, if you’re sure there are no \0 bytes present you can safely use crate::valgrind_printf_unchecked which performs better compared to this macro.