minix/external/bsd/llvm/dist/clang/test/Analysis/undef-buffers.c
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

43 lines
927 B
C

// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.unix,core.uninitialized -analyzer-store=region -verify %s
typedef __typeof(sizeof(int)) size_t;
void *malloc(size_t);
void free(void *);
char stackBased1 () {
char buf[2];
buf[0] = 'a';
return buf[1]; // expected-warning{{Undefined}}
}
char stackBased2 () {
char buf[2];
buf[1] = 'a';
return buf[0]; // expected-warning{{Undefined}}
}
// Exercise the conditional visitor. Radar://10105448
char stackBased3 (int *x) {
char buf[2];
int *y;
buf[0] = 'a';
if (!(y = x)) {
return buf[1]; // expected-warning{{Undefined}}
}
return buf[0];
}
char heapBased1 () {
char *buf = malloc(2);
buf[0] = 'a';
char result = buf[1]; // expected-warning{{undefined}}
free(buf);
return result;
}
char heapBased2 () {
char *buf = malloc(2);
buf[1] = 'a';
char result = buf[0]; // expected-warning{{undefined}}
free(buf);
return result;
}