31 lines
1.0 KiB
C
31 lines
1.0 KiB
C
// RUN: cat %s | %cling -Xclang -verify | FileCheck %s
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//This file checks a call instruction. The called function has arguments with nonnull attribute.
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// XFAIL: *
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#include <string.h>
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char *p = 0;
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strcmp("a", p); // expected-warning {{you are about to dereference null ptr, which probably will lead to seg violation. Do you want to proceed?[y/n]}}
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strcmp(p, "a"); // expected-warning {{you are about to dereference null ptr, which probably will lead to seg violation. Do you want to proceed?[y/n]}}
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extern "C" int printf(const char* fmt, ...);
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.rawInput 1
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extern "C" int cannotCallWithNull(int* p = 0);
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extern "C" int cannotCallWithNull(int* p) __attribute__((nonnull(1)));
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extern "C" int cannotCallWithNull(int* p);
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extern "C" int cannotCallWithNull(int* p);
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.rawInput 0
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extern "C" int cannotCallWithNull(int* p) {
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if (!p)
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printf("Must not be called with p=0.\n");
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return 1;
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}
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cannotCallWithNull() // warning-expected {{null passed to a callee which requires a non-null argument}}
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//CHECK-NOT: Must not be called with p=0.
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//CHECK: (int) 1
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.q
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