1 // RUN: %clang_analyze_cc1 -analyzer-checker debug.ExprInspection -Wno-deprecated-non-prototype -verify %s 2 // RUN: %clang_analyze_cc1 -analyzer-checker debug.ExprInspection -Wno-deprecated-non-prototype -verify %s \ 3 // RUN: -analyzer-config support-symbolic-integer-casts=true 4 5 void clang_analyzer_denote(int, const char *); 6 void clang_analyzer_express(int); 7 void clang_analyzer_dump(int); 8 void clang_analyzer_dump_ptr(int *); 9 SymbolCast_of_float_type_aux(int * p)10void SymbolCast_of_float_type_aux(int *p) { 11 clang_analyzer_dump_ptr(p); // expected-warning {{&x}} 12 clang_analyzer_dump(*p); // expected-warning {{Unknown}} 13 // Storing to the memory region of 'float x' as 'int' will 14 // materialize a fresh conjured symbol to regain accuracy. 15 *p += 0; 16 clang_analyzer_dump_ptr(p); // expected-warning {{&x}} 17 clang_analyzer_dump(*p); // expected-warning {{conj_$0{int}} 18 clang_analyzer_denote(*p, "$x"); 19 20 *p += 1; 21 // This should NOT be (float)$x + 1. Symbol $x was never casted to float. 22 clang_analyzer_express(*p); // expected-warning{{$x + 1}} 23 } 24 SymbolCast_of_float_type(void)25void SymbolCast_of_float_type(void) { 26 extern float x; 27 void (*f)() = SymbolCast_of_float_type_aux; 28 f(&x); 29 } 30