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Make divide-by-zero error, handle error gracefully in grow

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This commit is contained in:
Ian Gulliver
2021-11-22 20:46:20 -08:00
parent a5e44a7e07
commit c547abb296
3 changed files with 10 additions and 12 deletions
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7
vm/ophandler.go
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@@ -1,5 +1,6 @@
package vm
import "fmt"
import "math"
type opHandler func(*State, *Instruction)
@@ -79,8 +80,7 @@ func (state *State) handleDivideUnsigned(instr *Instruction) {
in2 := state.readUnsigned(instr.Operands[1])
if in2 == 0 {
// Divide by zero just returns zero
state.writeUnsigned(instr.Operands[0], 0)
state.setError(fmt.Errorf("Divide by zero"))
} else {
state.writeUnsigned(instr.Operands[0], in1/in2)
}
@@ -91,8 +91,7 @@ func (state *State) handleDivideSigned(instr *Instruction) {
in2 := state.readSigned(instr.Operands[1])
if in2 == 0 {
// Divide by zero just returns zero
state.writeSigned(instr.Operands[0], 0)
state.setError(fmt.Errorf("Divide by zero"))
} else {
state.writeSigned(instr.Operands[0], in1/in2)
}