48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix,debug.ExprInspection -verify %s
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// Test functions that are called "memcpy" but aren't the memcpy
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// we're looking for. Unfortunately, this test cannot be put into
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// a namespace. The out-of-class weird memcpy needs to be recognized
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// as a normal C function for the test to make sense.
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typedef __typeof(sizeof(int)) size_t;
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void *memcpy(void *, const void *, size_t);
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int sprintf(char *str, const char *format, ...);
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int snprintf(char *str, size_t size, const char *format, ...);
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void clang_analyzer_warnIfReached();
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struct S {
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static S s1, s2;
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// A weird overload within the class that accepts a structure reference
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// instead of a pointer.
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void memcpy(void *, const S &, size_t);
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void test_in_class_weird_memcpy() {
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memcpy(this, s2, 1); // no-crash
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}
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};
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// A similarly weird overload outside of the class.
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void *memcpy(void *, const S &, size_t);
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void test_out_of_class_weird_memcpy() {
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memcpy(&S::s1, S::s2, 1); // no-crash
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}
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template<typename... Args>
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void log(const char* fmt, const Args&... args) {
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char buf[100] = {};
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auto f = snprintf;
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auto g = sprintf;
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int n = 0;
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n += f(buf, 99, fmt, args...); // no-crash: The CalleeDecl is a VarDecl, but it's okay.
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n += g(buf, fmt, args...); // no-crash: Same.
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(void)n;
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clang_analyzer_warnIfReached(); // expected-warning {{REACHABLE}}
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}
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void test_gh_74269_no_crash() {
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log("%d", 1);
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}
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