From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/Analysis/malloc-sizeof.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 clang/test/Analysis/malloc-sizeof.c (limited to 'clang/test/Analysis/malloc-sizeof.c') diff --git a/clang/test/Analysis/malloc-sizeof.c b/clang/test/Analysis/malloc-sizeof.c new file mode 100644 index 0000000..d2b3bcf --- /dev/null +++ b/clang/test/Analysis/malloc-sizeof.c @@ -0,0 +1,27 @@ +// RUN: %clang_cc1 -analyze -analyzer-checker=experimental.unix.MallocSizeof -verify %s + +#include + +void *malloc(size_t size); +void *calloc(size_t nmemb, size_t size); +void *realloc(void *ptr, size_t size); + +struct A {}; +struct B {}; + +void foo() { + int *ip1 = malloc(sizeof(1)); + int *ip2 = malloc(4 * sizeof(int)); + + long *lp1 = malloc(sizeof(short)); // expected-warning {{Result of 'malloc' is converted to type 'long *', whose pointee type 'long' is incompatible with sizeof operand type 'short'}} + long *lp2 = malloc(5 * sizeof(double)); // expected-warning {{Result of 'malloc' is converted to type 'long *', whose pointee type 'long' is incompatible with sizeof operand type 'double'}} + long *lp3 = malloc(5 * sizeof(char) + 2); // expected-warning {{Result of 'malloc' is converted to type 'long *', whose pointee type 'long' is incompatible with sizeof operand type 'char'}} + + struct A *ap1 = calloc(1, sizeof(struct A)); + struct A *ap2 = calloc(2, sizeof(*ap1)); + struct A *ap3 = calloc(2, sizeof(ap1)); // expected-warning {{Result of 'calloc' is converted to type 'struct A *', whose pointee type 'struct A' is incompatible with sizeof operand type 'struct A *'}} + struct A *ap4 = calloc(3, sizeof(struct A*)); // expected-warning {{Result of 'calloc' is converted to type 'struct A *', whose pointee type 'struct A' is incompatible with sizeof operand type 'struct A *'}} + struct A *ap5 = calloc(4, sizeof(struct B)); // expected-warning {{Result of 'calloc' is converted to type 'struct A *', whose pointee type 'struct A' is incompatible with sizeof operand type 'struct B'}} + struct A *ap6 = realloc(ap5, sizeof(struct A)); + struct A *ap7 = realloc(ap5, sizeof(struct B)); // expected-warning {{Result of 'realloc' is converted to type 'struct A *', whose pointee type 'struct A' is incompatible with sizeof operand type 'struct B'}} +} -- cgit v1.2.3