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Improve accuracy of constraint system violation diagnostics.

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This commit is contained in:
Sean Bowe
2016-11-05 11:27:23 -06:00
parent b55744e1ad
commit 5f0a73ce11
4 changed files with 30 additions and 7 deletions
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15
src/zcash/JoinSplit.cpp
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@@ -205,10 +205,17 @@ public:
for (size_t i = 0; i < NumInputs; i++) {
// Sanity checks of input
{
// If note has nonzero value, its witness's root must be equal to the
// input.
if ((inputs[i].note.value != 0) && (inputs[i].witness.root() != rt)) {
throw std::invalid_argument("joinsplit not anchored to the correct root");
// If note has nonzero value
if (inputs[i].note.value != 0) {
// The witness root must equal the input root.
if (inputs[i].witness.root() != rt) {
throw std::invalid_argument("joinsplit not anchored to the correct root");
}
// The tree must witness the correct element
if (inputs[i].note.cm() != inputs[i].witness.element()) {
throw std::invalid_argument("witness of wrong element for joinsplit input");
}
}
// Ensure we have the key to this note.