forked from OSchip/llvm-project
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -analyzer-max-loop 4 -verify %s
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#include "Inputs/system-header-simulator.h"
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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static int another_function(int *y) {
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if (*y > 0)
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return *y;
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return 0;
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}
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static void function_which_doesnt_give_up(int **x) {
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*x = 0;
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}
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static void function_which_gives_up(int *x) {
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for (int i = 0; i < 5; ++i)
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(*x)++;
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}
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static void function_which_gives_up_nested(int *x) {
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function_which_gives_up(x);
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for (int i = 0; i < 5; ++i)
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(*x)++;
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}
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static void function_which_doesnt_give_up_nested(int *x, int *y) {
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*y = another_function(x);
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function_which_gives_up(x);
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}
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void coverage1(int *x) {
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function_which_gives_up(x);
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char *m = (char*)malloc(12);
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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void coverage2(int *x) {
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if (x) {
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function_which_gives_up(x);
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char *m = (char*)malloc(12);
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}
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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void coverage3(int *x) {
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x++;
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function_which_gives_up(x);
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char *m = (char*)malloc(12);
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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void coverage4(int *x) {
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*x += another_function(x);
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function_which_gives_up(x);
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char *m = (char*)malloc(12);
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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void coverage5(int *x) {
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for (int i = 0; i<7; ++i)
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function_which_gives_up(x);
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// The root function gives up here.
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char *m = (char*)malloc(12); // no-warning
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}
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void coverage6(int *x) {
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for (int i = 0; i<3; ++i) {
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function_which_gives_up(x);
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}
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char *m = (char*)malloc(12);
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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int coverage7_inline(int *i) {
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function_which_doesnt_give_up(&i);
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return *i; // expected-warning {{Dereference}}
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}
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void coverage8(int *x) {
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int y;
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function_which_doesnt_give_up_nested(x, &y);
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y = (*x)/y; // expected-warning {{Division by zero}}
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char *m = (char*)malloc(12);
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} // expected-warning {{Potential leak of memory pointed to by 'm'}}
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void function_which_gives_up_settonull(int **x) {
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*x = 0;
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int y = 0;
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for (int i = 0; i < 5; ++i)
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y++;
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}
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void coverage9(int *x) {
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int y = 5;
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function_which_gives_up_settonull(&x);
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y = (*x); // no warning
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}
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static void empty_function(){
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}
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int use_empty_function(int x) {
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x = 0;
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empty_function();
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return 5/x; //expected-warning {{Division by zero}}
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}
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