1 // RUN: %clangxx -DLSH_OVERFLOW -DOP='<<' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-LSH_OVERFLOW
2 // RUN: %clangxx -DLSH_OVERFLOW -DOP='<<=' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-LSH_OVERFLOW
3 // RUN: %clangxx -DTOO_LOW -DOP='<<' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW
4 // RUN: %clangxx -DTOO_LOW -DOP='>>' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW
5 // RUN: %clangxx -DTOO_LOW -DOP='<<=' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW
6 // RUN: %clangxx -DTOO_LOW -DOP='>>=' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW
7 // RUN: %clangxx -DTOO_HIGH -DOP='<<' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH
8 // RUN: %clangxx -DTOO_HIGH -DOP='>>' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH
9 // RUN: %clangxx -DTOO_HIGH -DOP='<<=' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH
10 // RUN: %clangxx -DTOO_HIGH -DOP='>>=' -fsanitize=shift %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH
11
12 #include <stdint.h>
13
main()14 int main() {
15 int a = 1;
16 unsigned b = 1;
17
18 a <<= 31; // ok in C++11, not ok in C99/C11
19 b <<= 31; // ok
20 b <<= 1; // still ok, unsigned
21
22 #ifdef LSH_OVERFLOW
23 // CHECK-LSH_OVERFLOW: shift.cpp:24:5: runtime error: left shift of negative value -2147483648
24 a OP 1;
25 #endif
26
27 #ifdef TOO_LOW
28 // CHECK-TOO_LOW: shift.cpp:29:5: runtime error: shift exponent -3 is negative
29 a OP (-3);
30 #endif
31
32 #ifdef TOO_HIGH
33 a = 0;
34 // CHECK-TOO_HIGH: shift.cpp:35:5: runtime error: shift exponent 32 is too large for 32-bit type 'int'
35 a OP 32;
36 #endif
37 }
38