44 lines · c
1// RUN: %clang_analyze_cc1 -verify %s \2// RUN: -Wno-unreachable-code -ffreestanding \3// RUN: -analyzer-checker=core \4// RUN: -analyzer-checker=debug.ExprInspection5 6#include <stdint.h>7 8int clang_analyzer_eval(int);9 10void f1(int * p) {11 // This branch should be infeasible12 // because __imag__ p is 0.13 if (!p && __imag__ (intptr_t) p)14 *p = 1; // no-warning15 16 // If p != 0 then this branch is feasible; otherwise it is not.17 if (__real__ (intptr_t) p)18 *p = 1; // no-warning19 20 *p = 2; // expected-warning{{Dereference of null pointer}}21}22 23void complexFloat(__complex__ float f) {24 clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}25 clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}26 27 __real__(f) = 1;28 __imag__(f) = 1;29 30 clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}31 clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}32}33 34void complexInt(__complex__ int f) {35 clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}36 clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}37 38 __real__(f) = 1;39 __imag__(f) = 1;40 41 clang_analyzer_eval(__real__(f) == 1); // expected-warning{{UNKNOWN}}42 clang_analyzer_eval(__imag__(f) == 1); // expected-warning{{UNKNOWN}}43}44