It will not “overflow”. Signed integer overflow is undefined behavior. The compiler could remove the whole loop or do anything else imaginable (or not).
Languages with dynamic typing and implicit large-integer types, such as Python and Ruby, generally just convert to that large-integer type.
I figured Java would probably define the behavior in the JVM, but based on a quick web search it sounds like it probably doesn’t by default, but does provide library methods to add or subtract safely.
Rust guarantees a panic by default, but provides library methods for wrapping, saturating, and unchecked (i.e. unsafely opting back in to undefined behavior).
It will not “overflow”. Signed integer overflow is undefined behavior. The compiler could remove the whole loop or do anything else imaginable (or not).
TIL!
I wonder how many languages out there do define what happens on integer overflow.
Languages with dynamic typing and implicit large-integer types, such as Python and Ruby, generally just convert to that large-integer type.
I figured Java would probably define the behavior in the JVM, but based on a quick web search it sounds like it probably doesn’t by default, but does provide library methods to add or subtract safely.
Rust guarantees a panic by default, but provides library methods for wrapping, saturating, and unchecked (i.e. unsafely opting back in to undefined behavior).