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// RUN: %clang_cc1 -analyze -analyzer-checker=alpha.security.taint,core,alpha.security.ArrayBoundV2 -analyzer-output=text -verify %s
// This file is for testing enhanced diagnostics produced by the GenericTaintChecker
int scanf(const char *restrict format, ...);
int system(const char *command);
void taintDiagnostic()
{
char buf[128];
scanf("%s", buf); // expected-note {{Taint originated here}}
system(buf); // expected-warning {{Untrusted data is passed to a system call}} // expected-note {{Untrusted data is passed to a system call (CERT/STR02-C. Sanitize data passed to complex subsystems)}}
}
int taintDiagnosticOutOfBound() {
int index;
int Array[] = {1, 2, 3, 4, 5};
scanf("%d", &index); // expected-note {{Taint originated here}}
return Array[index]; // expected-warning {{Out of bound memory access (index is tainted)}}
// expected-note@-1 {{Out of bound memory access (index is tainted)}}
}
int taintDiagnosticDivZero(int operand) {
scanf("%d", &operand); // expected-note {{Value assigned to 'operand'}}
// expected-note@-1 {{Taint originated here}}
return 10 / operand; // expected-warning {{Division by a tainted value, possibly zero}}
// expected-note@-1 {{Division by a tainted value, possibly zero}}
}
void taintDiagnosticVLA() {
int x;
scanf("%d", &x); // expected-note {{Value assigned to 'x'}}
// expected-note@-1 {{Taint originated here}}
int vla[x]; // expected-warning {{Declared variable-length array (VLA) has tainted size}}
// expected-note@-1 {{Declared variable-length array (VLA) has tainted size}}
}
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