59.mdx

fork	Frontier
group	Stack Memory Storage and Flow Operations

Notes

The memory is always fully accessible. What this instruction tracks is the highest index that was used in the current execution. A first write to a bigger index will trigger a memory expansion, which will cost gas.

Stack output

0. Integer: current memory size in bytes.

Example

Input	Output
	2848

Error cases

The transaction is reverted in those cases:

• Not enough gas.
• Stack overflow.