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// RUN: %clang_cc1 -triple i386-apple-darwin10 -analyze -analyzer-config eagerly-assume=false -analyzer-checker=core.uninitialized.Assign,debug.ExprInspection -verify %s
void clang_analyzer_eval(int);
void initbug() {
const union { float a; } u = {};
(void)u.a; // no-crash
}
int const parr[2] = {1};
void constarr() {
int i = 2;
clang_analyzer_eval(parr[i]); // expected-warning{{UNDEFINED}}
i = 1;
clang_analyzer_eval(parr[i] == 0); // expected-warning{{TRUE}}
i = -1;
clang_analyzer_eval(parr[i]); // expected-warning{{UNDEFINED}}
}
struct SM {
int a;
int b;
};
const struct SM sm = {.a = 1};
void multinit() {
clang_analyzer_eval(sm.a == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(sm.b == 0); // expected-warning{{TRUE}}
}
const int glob_arr1[6] = {[2] = 3, [0] = 1, [1] = 2, [3] = 4};
void glob_array_index1() {
clang_analyzer_eval(glob_arr1[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr1[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr1[2] == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr1[3] == 4); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr1[4] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr1[5] == 0); // expected-warning{{TRUE}}
}
void glob_array_index2() {
const int *ptr = glob_arr1;
clang_analyzer_eval(ptr[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(ptr[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(ptr[2] == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(ptr[3] == 4); // expected-warning{{TRUE}}
clang_analyzer_eval(ptr[4] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(ptr[5] == 0); // expected-warning{{TRUE}}
}
void glob_invalid_index1() {
int x = -42;
int res = glob_arr1[x]; // expected-warning{{garbage or undefined}}
}
void glob_invalid_index2() {
const int *ptr = glob_arr1;
int x = 42;
int res = ptr[x]; // expected-warning{{garbage or undefined}}
}
const int glob_arr2[3][3] = {[0][0] = 1, [1][1] = 5, [2][0] = 7};
void glob_arr_index3() {
clang_analyzer_eval(glob_arr2[0][0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[0][1] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[0][2] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[1][0] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[1][1] == 5); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[1][2] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[2][0] == 7); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[2][1] == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr2[2][2] == 0); // expected-warning{{TRUE}}
}
void negative_index() {
int x = 2, y = -2;
clang_analyzer_eval(glob_arr2[x][y] == 5); // expected-warning{{UNDEFINED}}
x = 3;
y = -3;
clang_analyzer_eval(glob_arr2[x][y] == 7); // expected-warning{{UNDEFINED}}
}
void glob_invalid_index3() {
int x = -1, y = -1;
int res = glob_arr2[x][y]; // expected-warning{{garbage or undefined}}
}
void glob_invalid_index4() {
int x = 3, y = 2;
int res = glob_arr2[x][y]; // expected-warning{{garbage or undefined}}
}
const int glob_arr_no_init[10];
void glob_arr_index4() {
// FIXME: Should warn {{FALSE}}, since the array has a static storage.
clang_analyzer_eval(glob_arr_no_init[2]); // expected-warning{{UNKNOWN}}
}
const int glob_arr3[]; // IncompleteArrayType
const int glob_arr3[4] = {1, 2, 3}; // ConstantArrayType
void glob_arr_index5() {
clang_analyzer_eval(glob_arr3[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr3[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr3[2] == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr3[3] == 0); // expected-warning{{TRUE}}
}
void glob_invalid_index5() {
int x = 42;
int res = glob_arr3[x]; // expected-warning{{garbage or undefined}}
}
void glob_invalid_index6() {
int x = -42;
int res = glob_arr3[x]; // expected-warning{{garbage or undefined}}
}
const int glob_arr4[]; // IncompleteArrayType
const int glob_arr4[4] = {1, 2, 3}; // ConstantArrayType
const int glob_arr4[]; // ConstantArrayType (according to AST)
void glob_arr_index6() {
clang_analyzer_eval(glob_arr4[0] == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr4[1] == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr4[2] == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(glob_arr4[3] == 0); // expected-warning{{TRUE}}
}
void glob_invalid_index7() {
int x = 42;
int res = glob_arr4[x]; // expected-warning{{garbage or undefined}}
}
void glob_invalid_index8() {
int x = -42;
int res = glob_arr4[x]; // expected-warning{{garbage or undefined}}
}
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