33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
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// RUN: %clang_analyze_cc1 %s -verify \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-config core.CallAndMessage:ArgPointeeInitializedness=true
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//
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// Just exercise the analyzer on code that has at one point caused issues
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// (i.e., no assertions or crashes).
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static void f1(const char *x, char *y) {
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while (*x != 0) {
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*y++ = *x++;
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}
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}
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// This following case checks that we properly handle typedefs when getting
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// the RvalueType of an ElementRegion.
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typedef struct F12_struct {} F12_typedef;
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typedef void* void_typedef;
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void_typedef f2_helper();
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static void f2(void *buf) {
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F12_typedef* x;
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x = f2_helper();
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memcpy((&x[1]), (buf), 1); // expected-warning{{implicitly declaring library function 'memcpy' with type 'void *(void *, const void *}} \
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// expected-note{{include the header <string.h> or explicitly provide a declaration for 'memcpy'}}
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}
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// AllocaRegion is untyped. Void pointer isn't of much help either. Before
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// realizing that the value is undefined, we need to somehow figure out
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// what type of value do we expect.
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void f3(void *dest) {
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void *src = __builtin_alloca(5);
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memcpy(dest, src, 1); // expected-warning{{2nd function call argument is a pointer to uninitialized value}}
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}
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