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// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file %s -o %t.plist
// RUN: cat %t.plist | %diff_plist %S/Inputs/expected-plists/undef-value-param.c.plist -
void foo_irrelevant(int c) {
if (c)
return;
c++;
return;
}
void foo(int c, int *x) {
if (c)
//expected-note@-1{{Assuming 'c' is not equal to 0}}
//expected-note@-2{{Taking true branch}}
return; // expected-note{{Returning without writing to '*x'}}
*x = 5;
}
int use(int c) {
int xx; //expected-note {{'xx' declared without an initial value}}
int *y = &xx;
foo (c, y);
//expected-note@-1{{Calling 'foo'}}
//expected-note@-2{{Returning from 'foo'}}
foo_irrelevant(c);
return xx+3; //expected-warning{{The left operand of '+' is a garbage value}}
//expected-note@-1{{The left operand of '+' is a garbage value}}
}
void initArray(int x, double XYZ[3]) {
if (x <= 0) //expected-note {{Taking true branch}}
//expected-note@-1 {{Assuming 'x' is <= 0}}
return;
XYZ[0] = 1;
XYZ[1] = 1;
XYZ[2] = 1;
}
int testPassingParentRegionArray(int x) {
double XYZ[3];
initArray(x, XYZ); //expected-note {{Calling 'initArray'}}
//expected-note@-1 {{Returning from 'initArray'}}
return 1 * XYZ[1]; //expected-warning {{The right operand of '*' is a garbage value}}
//expected-note@-1 {{The right operand of '*' is a garbage value}}
}
double *getValidPtr();
struct WithFields {
double *f1;
};
void initStruct(int x, struct WithFields *X) {
if (x <= 0) //expected-note {{Taking true branch}}
//expected-note@-1 {{Assuming 'x' is <= 0}}
return; //expected-note{{Returning without writing to 'X->f1'}}
X->f1 = getValidPtr();
}
double testPassingParentRegionStruct(int x) {
struct WithFields st;
st.f1 = 0; // expected-note {{Null pointer value stored to 'st.f1'}}
initStruct(x, &st); //expected-note {{Calling 'initStruct'}}
//expected-note@-1 {{Returning from 'initStruct'}}
return (*st.f1); //expected-warning {{Dereference of null pointer}}
//expected-note@-1{{Dereference of null pointer (loaded from field 'f1')}}
}
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