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// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.core -analyzer-store=region -verify %s
//
// Just exercise the analyzer on code that has at one point caused issues
// (i.e., no assertions or crashes).
static void f1(const char *x, char *y) {
while (*x != 0) {
*y++ = *x++;
}
}
// This following case checks that we properly handle typedefs when getting
// the RvalueType of an ElementRegion.
typedef struct F12_struct {} F12_typedef;
typedef void* void_typedef;
void_typedef f2_helper();
static void f2(void *buf) {
F12_typedef* x;
x = f2_helper();
memcpy((&x[1]), (buf), 1); // expected-warning{{implicitly declaring library function 'memcpy' with type 'void *(void *, const void *}} \
// expected-note{{include the header <string.h> or explicitly provide a declaration for 'memcpy'}}
}
// AllocaRegion is untyped. Void pointer isn't of much help either. Before
// realizing that the value is undefined, we need to somehow figure out
// what type of value do we expect.
void f3(void *dest) {
void *src = __builtin_alloca(5);
memcpy(dest, src, 1); // expected-warning{{2nd function call argument is a pointer to uninitialized value}}
}
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