72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-checker=core,unix.Malloc -fblocks -verify %s
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// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-checker=core,alpha.unix.MallocWithAnnotations -fblocks -verify %s
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void free(void *);
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void t1 () {
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int a[] = { 1 };
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free(a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}}
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}
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void t2 () {
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int a = 1;
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free(&a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}}
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}
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void t3 () {
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static int a[] = { 1 };
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free(a); // expected-warning {{Argument to free() is the address of the static variable 'a', which is not memory allocated by malloc()}}
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}
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void t4 (char *x) {
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free(x); // no-warning
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}
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void t5 () {
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extern char *ptr();
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free(ptr()); // no-warning
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}
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void t6 () {
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free((void*)1000); // expected-warning {{Argument to free() is a constant address (1000), which is not memory allocated by malloc()}}
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}
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void t7 (char **x) {
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free(*x); // no-warning
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}
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void t8 (char **x) {
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// ugh
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free((*x)+8); // no-warning
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}
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void t9 () {
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label:
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free(&&label); // expected-warning {{Argument to free() is the address of the label 'label', which is not memory allocated by malloc()}}
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}
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void t10 () {
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free((void*)&t10); // expected-warning {{Argument to free() is the address of the function 't10', which is not memory allocated by malloc()}}
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}
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void t11 () {
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char *p = (char*)__builtin_alloca(2);
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free(p); // expected-warning {{Memory allocated by alloca() should not be deallocated}}
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}
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void t12 () {
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free(^{return;}); // expected-warning {{Argument to free() is a block, which is not memory allocated by malloc()}}
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}
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void t13 (char a) {
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free(&a); // expected-warning {{Argument to free() is the address of the parameter 'a', which is not memory allocated by malloc()}}
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}
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static int someGlobal[2];
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void t14 () {
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free(someGlobal); // expected-warning {{Argument to free() is the address of the global variable 'someGlobal', which is not memory allocated by malloc()}}
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}
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void t15 (char **x, int offset) {
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// Unknown value
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free(x[offset]); // no-warning
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}
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