forked from OSchip/llvm-project
100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
// RUN: clang -analyze -checker-simple -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
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// RUN: clang -analyze -checker-cfref -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
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// RUN: clang -analyze -checker-cfref -analyzer-store=basic -analyzer-constraints=range -verify %s &&
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// RUN: clang -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=basic -verify %s &&
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// RUN: clang -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=range -verify %s
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struct s {
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int data;
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int data_array[10];
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};
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typedef struct {
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int data;
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} STYPE;
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void g1(struct s* p);
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// Array to pointer conversion. Array in the struct field.
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void f(void) {
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int a[10];
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int (*p)[10];
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p = &a;
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(*p)[3] = 1;
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struct s d;
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struct s *q;
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q = &d;
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q->data = 3;
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d.data_array[9] = 17;
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}
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// StringLiteral in lvalue context and pointer to array type.
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// p: ElementRegion, q: StringRegion
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void f2() {
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char *p = "/usr/local";
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char (*q)[4];
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q = &"abc";
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}
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// Typedef'ed struct definition.
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void f3() {
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STYPE s;
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}
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// Initialize array with InitExprList.
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void f4() {
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int a[] = { 1, 2, 3};
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int b[3] = { 1, 2 };
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struct s c[] = {{1,{1}}};
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}
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// Struct variable in lvalue context.
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// Assign UnknownVal to the whole struct.
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void f5() {
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struct s data;
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g1(&data);
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}
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// AllocaRegion test.
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void f6() {
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char *p;
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p = __builtin_alloca(10);
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p[1] = 'a';
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}
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struct s2;
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void g2(struct s2 *p);
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// Incomplete struct pointer used as function argument.
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void f7() {
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struct s2 *p = __builtin_alloca(10);
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g2(p);
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}
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// sizeof() is unsigned while -1 is signed in array index.
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void f8() {
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int a[10];
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a[sizeof(a)/sizeof(int) - 1] = 1; // no-warning
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}
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// Initialization of struct array elements.
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void f9() {
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struct s a[10];
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}
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// Initializing array with string literal.
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void f10() {
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char a1[4] = "abc";
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char a3[6] = "abc";
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}
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// Retrieve the default value of element/field region.
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void f11() {
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struct s a;
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g(&a);
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if (a.data == 0) // no-warning
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a.data = 1;
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}
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