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