forked from OSchip/llvm-project
28 lines
1.8 KiB
C
28 lines
1.8 KiB
C
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// RUN: %clang_cc1 -analyze -analyzer-checker=experimental.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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struct A {};
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struct B {};
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void foo() {
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int *ip1 = malloc(sizeof(1));
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int *ip2 = malloc(4 * sizeof(int));
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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'}}
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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'}}
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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'}}
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struct A *ap1 = calloc(1, sizeof(struct A));
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struct A *ap2 = calloc(2, sizeof(*ap1));
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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 *'}}
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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 *'}}
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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'}}
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struct A *ap6 = realloc(ap5, sizeof(struct A));
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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'}}
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}
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