27 lines · c
1// RUN: %clang_analyze_cc1 %s \2// RUN: -Wno-conversion -Wno-tautological-constant-compare \3// RUN: -analyzer-checker=core,apiModeling,alpha.core.Conversion \4// RUN: -analyzer-output=text \5// RUN: -verify6 7unsigned char U8;8signed char S8;9 10void track_assign(void) {11 unsigned long L = 1000; // expected-note {{'L' initialized to 1000}}12 int I = -1; // expected-note {{'I' initialized to -1}}13 U8 *= L; // expected-warning {{Loss of precision in implicit conversion}}14 // expected-note@-1 {{Loss of precision in implicit conversion}}15 L *= I; // expected-warning {{Loss of sign in implicit conversion}}16 // expected-note@-1 {{Loss of sign in implicit conversion}}17}18 19void track_relational(unsigned U, signed S) {20 if (S < -10) { // expected-note {{Taking true branch}}21 // expected-note@-1 {{Assuming the condition is true}}22 if (U < S) { // expected-warning {{Loss of sign in implicit conversion}}23 // expected-note@-1 {{Loss of sign in implicit conversion}}24 }25 }26}27