dc16628c93
This doesn't appear to be the cause of the slowdown. I'll have to try a manual bisect to see if there's really anything there, or if it's just the bot itself taking on additional load. Meanwhile, this change helps with correctness. This changes an assertion and adds a test case, then re-applies r180638, which was reverted in r180714. <rdar://problem/13296133> and PR15863 llvm-svn: 180864
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -analyzer-store=region -verify %s
|
|
// RUN: %clang_cc1 -triple i386-apple-darwin9 -analyze -analyzer-checker=core,alpha.core,debug.ExprInspection -analyzer-store=region -verify %s
|
|
|
|
extern void clang_analyzer_eval(_Bool);
|
|
|
|
// Test if the 'storage' region gets properly initialized after it is cast to
|
|
// 'struct sockaddr *'.
|
|
|
|
typedef unsigned char __uint8_t;
|
|
typedef unsigned int __uint32_t;
|
|
typedef __uint32_t __darwin_socklen_t;
|
|
typedef __uint8_t sa_family_t;
|
|
typedef __darwin_socklen_t socklen_t;
|
|
struct sockaddr { sa_family_t sa_family; };
|
|
struct sockaddr_storage {};
|
|
|
|
void getsockname();
|
|
|
|
void f(int sock) {
|
|
struct sockaddr_storage storage;
|
|
struct sockaddr* sockaddr = (struct sockaddr*)&storage;
|
|
socklen_t addrlen = sizeof(storage);
|
|
getsockname(sock, sockaddr, &addrlen);
|
|
switch (sockaddr->sa_family) { // no-warning
|
|
default:
|
|
;
|
|
}
|
|
}
|
|
|
|
struct s {
|
|
struct s *value;
|
|
};
|
|
|
|
void f1(struct s **pval) {
|
|
int *tbool = ((void*)0);
|
|
struct s *t = *pval;
|
|
pval = &(t->value);
|
|
tbool = (int *)pval; // use the cast-to type 'int *' to create element region.
|
|
char c = (unsigned char) *tbool; // Should use cast-to type to create symbol.
|
|
if (*tbool == -1) // here load the element region with the correct type 'int'
|
|
(void)3;
|
|
}
|
|
|
|
void f2(const char *str) {
|
|
unsigned char ch, cl, *p;
|
|
|
|
p = (unsigned char *)str;
|
|
ch = *p++; // use cast-to type 'unsigned char' to create element region.
|
|
cl = *p++;
|
|
if(!cl)
|
|
cl = 'a';
|
|
}
|
|
|
|
// Test cast VariableSizeArray to pointer does not crash.
|
|
void *memcpy(void *, void const *, unsigned long);
|
|
typedef unsigned char Byte;
|
|
void doit(char *data, int len) {
|
|
if (len) {
|
|
Byte buf[len];
|
|
memcpy(buf, data, len);
|
|
}
|
|
}
|
|
|
|
// PR 6013 and 6035 - Test that a cast of a pointer to long and then to int does not crash SValuator.
|
|
void pr6013_6035_test(void *p) {
|
|
unsigned int foo;
|
|
foo = ((long)(p));
|
|
(void) foo;
|
|
}
|
|
|
|
// PR12511 and radar://11215362 - Test that we support SymCastExpr, which represents symbolic int to float cast.
|
|
char ttt(int intSeconds) {
|
|
double seconds = intSeconds;
|
|
if (seconds)
|
|
return 0;
|
|
return 0;
|
|
}
|
|
|
|
int foo (int* p) {
|
|
int y = 0;
|
|
if (p == 0) {
|
|
if ((*((void**)&p)) == (void*)0) // Test that the cast to void preserves the symbolic region.
|
|
return 0;
|
|
else
|
|
return 5/y; // This code should be unreachable: no-warning.
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void castsToBool() {
|
|
clang_analyzer_eval(0); // expected-warning{{FALSE}}
|
|
clang_analyzer_eval(0U); // expected-warning{{FALSE}}
|
|
clang_analyzer_eval((void *)0); // expected-warning{{FALSE}}
|
|
|
|
clang_analyzer_eval(1); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(1U); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(-1); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(0x100); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(0x100U); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval((void *)0x100); // expected-warning{{TRUE}}
|
|
|
|
extern int symbolicInt;
|
|
clang_analyzer_eval(symbolicInt); // expected-warning{{UNKNOWN}}
|
|
if (symbolicInt)
|
|
clang_analyzer_eval(symbolicInt); // expected-warning{{TRUE}}
|
|
|
|
extern void *symbolicPointer;
|
|
clang_analyzer_eval(symbolicPointer); // expected-warning{{UNKNOWN}}
|
|
if (symbolicPointer)
|
|
clang_analyzer_eval(symbolicPointer); // expected-warning{{TRUE}}
|
|
|
|
int localInt;
|
|
clang_analyzer_eval(&localInt); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(&castsToBool); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval("abc"); // expected-warning{{TRUE}}
|
|
|
|
extern float globalFloat;
|
|
clang_analyzer_eval(globalFloat); // expected-warning{{UNKNOWN}}
|
|
}
|