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Environmental Information

Index 1 is top of the stack. See PUSH.

Notes

For out of bound bytes, 0s will be copied.

Stack input

  1. address: 20-byte address of the contract to query.
  2. destOffset: byte offset in the memory where the result will be copied.
  3. offset: byte offset in the code to copy.
  4. size: byte size to copy.

Examples

Code
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
* Input 1 * * Input 2
1 0x43a61f3f4c73ea0d444c5c1c1a8544067a86219b * 1 0x43a61f3f4c73ea0d444c5c1c1a8544067a86219b
2 0 * 2 0
3 0 * 3 31
4 32 * 4 8
Memory before
0
Memory after input 1
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Memory after input 1 then 2
0xFF00000000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

Reproduce in playground

Error cases

The state changes done by the current context are reverted in those cases:

  • Not enough gas.
  • Not enough values on the stack.