1 // RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -analyzer-store=region -verify %s
2 // RUN: %clang_cc1 -triple i386-apple-darwin9 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -analyzer-store=region -verify %s
4 extern void clang_analyzer_eval(_Bool);
6 // Test if the 'storage' region gets properly initialized after it is cast to
7 // 'struct sockaddr *'.
9 typedef unsigned char __uint8_t;
10 typedef unsigned int __uint32_t;
11 typedef __uint32_t __darwin_socklen_t;
12 typedef __uint8_t sa_family_t;
13 typedef __darwin_socklen_t socklen_t;
14 struct sockaddr { sa_family_t sa_family; };
15 struct sockaddr_storage {};
20 struct sockaddr_storage storage;
21 struct sockaddr* sockaddr = (struct sockaddr*)&storage;
22 socklen_t addrlen = sizeof(storage);
23 getsockname(sock, sockaddr, &addrlen);
24 switch (sockaddr->sa_family) { // no-warning
34 void f1(struct s **pval) {
35 int *tbool = ((void*)0);
38 tbool = (int *)pval; // use the cast-to type 'int *' to create element region.
39 char c = (unsigned char) *tbool; // Should use cast-to type to create symbol.
40 if (*tbool == -1) // here load the element region with the correct type 'int'
44 void f2(const char *str) {
45 unsigned char ch, cl, *p;
47 p = (unsigned char *)str;
48 ch = *p++; // use cast-to type 'unsigned char' to create element region.
54 // Test cast VariableSizeArray to pointer does not crash.
55 void *memcpy(void *, void const *, unsigned long);
56 typedef unsigned char Byte;
57 void doit(char *data, int len) {
60 memcpy(buf, data, len);
64 // PR 6013 and 6035 - Test that a cast of a pointer to long and then to int does not crash SValuator.
65 void pr6013_6035_test(void *p) {
71 // PR12511 and radar://11215362 - Test that we support SymCastExpr, which represents symbolic int to float cast.
72 char ttt(int intSeconds) {
73 double seconds = intSeconds;
82 if ((*((void**)&p)) == (void*)0) // Test that the cast to void preserves the symbolic region.
85 return 5/y; // This code should be unreachable: no-warning.
91 clang_analyzer_eval(0); // expected-warning{{FALSE}}
92 clang_analyzer_eval(0U); // expected-warning{{FALSE}}
93 clang_analyzer_eval((void *)0); // expected-warning{{FALSE}}
95 clang_analyzer_eval(1); // expected-warning{{TRUE}}
96 clang_analyzer_eval(1U); // expected-warning{{TRUE}}
97 clang_analyzer_eval(-1); // expected-warning{{TRUE}}
98 clang_analyzer_eval(0x100); // expected-warning{{TRUE}}
99 clang_analyzer_eval(0x100U); // expected-warning{{TRUE}}
100 clang_analyzer_eval((void *)0x100); // expected-warning{{TRUE}}
102 extern int symbolicInt;
103 clang_analyzer_eval(symbolicInt); // expected-warning{{UNKNOWN}}
105 clang_analyzer_eval(symbolicInt); // expected-warning{{TRUE}}
107 extern void *symbolicPointer;
108 clang_analyzer_eval(symbolicPointer); // expected-warning{{UNKNOWN}}
110 clang_analyzer_eval(symbolicPointer); // expected-warning{{TRUE}}
113 int* ptr = &localInt;
114 clang_analyzer_eval(ptr); // expected-warning{{TRUE}}
115 clang_analyzer_eval(&castsToBool); // expected-warning{{TRUE}}
116 clang_analyzer_eval("abc"); // expected-warning{{TRUE}}
118 extern float globalFloat;
119 clang_analyzer_eval(globalFloat); // expected-warning{{UNKNOWN}}