44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
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// RUN: %clang_analyze_cc1 -verify %s \
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// RUN: -Wno-unreachable-code -ffreestanding \
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// RUN: -analyzer-checker=core \
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// RUN: -analyzer-checker=debug.ExprInspection
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#include <stdint.h>
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int clang_analyzer_eval(int);
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void f1(int * p) {
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// This branch should be infeasible
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// because __imag__ p is 0.
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if (!p && __imag__ (intptr_t) p)
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*p = 1; // no-warning
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// If p != 0 then this branch is feasible; otherwise it is not.
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if (__real__ (intptr_t) p)
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*p = 1; // no-warning
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*p = 2; // expected-warning{{Dereference of null pointer}}
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}
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void complexFloat(__complex__ float f) {
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clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}
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__real__(f) = 1;
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__imag__(f) = 1;
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clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}
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}
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void complexInt(__complex__ int f) {
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clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}
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__real__(f) = 1;
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__imag__(f) = 1;
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clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}
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}
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