taler-ios

commit 9fa8720962d7328de09421f84457e5c677994fd8
parent be9cee8bac54617f696c52f40247eacf4b76a002
Author: Marc Stibane <marc@taler.net>
Date:   Sat, 22 Aug 2026 10:20:57 +0200

AI: clamp

Diffstat:
M
TalerCommon/Helper/CurrencySpecification.swift
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/TalerCommon/Helper/CurrencySpecification.swift b/TalerCommon/Helper/CurrencySpecification.swift
@@ -322,7 +322,10 @@ public class CurrencyFormatter: NumberFormatter {
         formatter.currency = currency
 //        formatter.setCode(to: EUR_4217)
 //        formatter.setSymbol(to: "€")
-        formatter.setMinimumFractionDigits(specs.fractionalTrailingZeroDigits)
+        // clamp: specs comes from the exchange and is untrusted; an out-of-range or negative
+        // value here would make NumberFormatter try to render millions of fractional digits
+        let trailingZeroDigits = min(max(specs.fractionalTrailingZeroDigits, 0), 8)
+        formatter.setMinimumFractionDigits(trailingZeroDigits)
         return formatter
     }