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trace: skip NULL address in add_print_address #2

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3 changes: 3 additions & 0 deletions trace.c
Original file line number Diff line number Diff line change
Expand Up @@ -2251,6 +2251,9 @@ static int add_print_address(long address)
size_t len;
int i;

if (!address)
return 0;

len = read_string(address, string, sizeof(string));
if (!len)
return -1;
Expand Down