| // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -triple x86_64-linux-gnu -Wno-shift-count-overflow -verify %s |
| |
| #define offsetof(type,memb) ((unsigned long)&((type*)0)->memb) |
| |
| typedef struct { |
| unsigned long guest_counter; |
| unsigned int guest_fpc; |
| } S; |
| |
| // no crash |
| int left_shift_overflow_no_crash(unsigned int i) { |
| unsigned shift = 323U; // expected-note{{'shift' initialized to 323}} |
| switch (i) { // expected-note{{Control jumps to 'case 8:' at line 14}} |
| case offsetof(S, guest_fpc): |
| return 3 << shift; // expected-warning{{The result of the left shift is undefined due to shifting by '323', which is greater or equal to the width of type 'int'}} |
| // expected-note@-1{{The result of the left shift is undefined due to shifting by '323', which is greater or equal to the width of type 'int'}} |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
