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https://github.com/Gericom/teak-llvm.git
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0c28bc20da
This suppresses a common false positive when analyzing libc++. Along the way, introduce some tests to show this checker actually works with C++ static_cast<>. llvm-svn: 220160
27 lines
927 B
C++
27 lines
927 B
C++
// RUN: %clang_cc1 -analyze -analyzer-checker=unix.MallocSizeof -verify %s
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#include <stddef.h>
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void *malloc(size_t size);
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void *calloc(size_t nmemb, size_t size);
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void *realloc(void *ptr, size_t size);
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void free(void *ptr);
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struct A {};
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struct B {};
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void foo(unsigned int unsignedInt, unsigned int readSize) {
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// Sanity check the checker is working as expected.
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A* a = static_cast<A*>(malloc(sizeof(int))); // expected-warning {{Result of 'malloc' is converted to a pointer of type 'struct A', which is incompatible with sizeof operand type 'int'}}
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free(a);
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}
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void bar() {
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A *x = static_cast<A*>(calloc(10, sizeof(void*))); // expected-warning {{Result of 'calloc' is converted to a pointer of type 'struct A', which is incompatible with sizeof operand type 'void *'}}
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// sizeof(void*) is compatible with any pointer.
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A **y = static_cast<A**>(calloc(10, sizeof(void*))); // no-warning
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free(x);
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free(y);
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}
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