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CPP: Add some test cases involving dataflow.

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This commit is contained in:
Geoffrey White
2018-11-21 19:02:27 +00:00
parent dc224c5c94
commit 01ba635e1d
1 changed files with 21 additions and 0 deletions
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21
cpp/ql/test/query-tests/Critical/OverflowStatic/test.cpp
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@@ -25,3 +25,24 @@ void f1(void)
memcpy(buffer2, buffer1, 3); // GOOD
memcpy(buffer2, buffer1, 4); // BAD
}
void f2(char *src)
{
char buffer[100];
char *ptr;
int amount;
amount = 100;
memcpy(buffer, src, amount); // GOOD
amount = amount + 1;
memcpy(buffer, src, amount); // BAD [NOT DETECTED]
amount = 101;
memcpy(buffer, src, amount); // BAD [NOT DETECTED]
ptr = buffer;
memcpy(ptr, src, 101); // BAD [NOT DETECTED]
ptr = &(buffer[0]);
memcpy(ptr, src, 101); // BAD [NOT DETECTED]
ptr = &(buffer[1]);
memcpy(ptr, src, 100); // BAD [NOT DETECTED]
}