forked from OSchip/llvm-project
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
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// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
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// RUN: %clang_analyze_cc1 -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
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// RUN: %clang_analyze_cc1 -DUSE_BUILTINS -DVARIANT -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
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#include "Inputs/system-header-simulator-cxx.h"
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#include "Inputs/system-header-simulator-for-malloc.h"
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// This provides us with four possible mempcpy() definitions.
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// See also comments in bstring.c.
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#ifdef USE_BUILTINS
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#define BUILTIN(f) __builtin_##f
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#else /* USE_BUILTINS */
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#define BUILTIN(f) f
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#endif /* USE_BUILTINS */
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#ifdef VARIANT
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#define __mempcpy_chk BUILTIN(__mempcpy_chk)
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void *__mempcpy_chk(void *__restrict__ s1, const void *__restrict__ s2,
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size_t n, size_t destlen);
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#define mempcpy(a,b,c) __mempcpy_chk(a,b,c,(size_t)-1)
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#else /* VARIANT */
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#define mempcpy BUILTIN(mempcpy)
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void *mempcpy(void *__restrict__ s1, const void *__restrict__ s2, size_t n);
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#endif /* VARIANT */
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void clang_analyzer_eval(int);
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int *testStdCopyInvalidatesBuffer(std::vector<int> v) {
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int n = v.size();
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int *buf = (int *)malloc(n * sizeof(int));
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buf[0] = 66;
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// Call to copy should invalidate buf.
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std::copy(v.begin(), v.end(), buf);
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int i = buf[0];
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clang_analyzer_eval(i == 66); // expected-warning {{UNKNOWN}}
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return buf;
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}
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int *testStdCopyBackwardInvalidatesBuffer(std::vector<int> v) {
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int n = v.size();
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int *buf = (int *)malloc(n * sizeof(int));
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buf[0] = 66;
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// Call to copy_backward should invalidate buf.
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std::copy_backward(v.begin(), v.end(), buf + n);
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int i = buf[0];
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clang_analyzer_eval(i == 66); // expected-warning {{UNKNOWN}}
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return buf;
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}
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namespace pr34460 {
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short a;
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class b {
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int c;
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long g;
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void d() {
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int e = c;
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f += e;
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mempcpy(f, &a, g);
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}
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unsigned *f;
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};
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}
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