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-rw-r--r--apt-private/private-history.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/apt-private/private-history.cc b/apt-private/private-history.cc
index cf4540772..31b3b1333 100644
--- a/apt-private/private-history.cc
+++ b/apt-private/private-history.cc
@@ -352,6 +352,8 @@ class TransactionController
static bool ParseId(const char *str, size_t &id, size_t max)
{
+ if (str == nullptr)
+ return _error->Error(_("Incorrect usage, no ID was given."));
try
{
id = std::stoi(str);