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vm: forbid jumping out of the script bounds

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This commit is contained in:
Anna Shaleva 2022-06-06 11:52:26 +03:00
parent a5b5f88fe2
commit 1005c1f7db
1 changed files with 1 additions and 1 deletions
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2
pkg/vm/context.go
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@ -91,7 +91,7 @@ func (c *Context) NextIP() int {
// Jump unconditionally moves the next instruction pointer to the specified location. // Jump unconditionally moves the next instruction pointer to the specified location.
func (c *Context) Jump(pos int) { func (c *Context) Jump(pos int) {
if pos < 0 || pos > len(c.prog) { if pos < 0 || pos >= len(c.prog) {
panic("instruction offset is out of range") panic("instruction offset is out of range")
} }
c.nextip = pos c.nextip = pos