1 // RUN: %clangxx -DLSH_OVERFLOW -DOP='<<' -fsanitize=shift-base -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-LSH_OVERFLOW 2 // RUN: %clangxx -DLSH_OVERFLOW -DOP='<<=' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-LSH_OVERFLOW 3 // RUN: %clangxx -DTOO_LOW -DOP='<<' -fsanitize=shift-exponent -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW 4 // RUN: %clangxx -DTOO_LOW -DOP='>>' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW 5 // RUN: %clangxx -DTOO_LOW -DOP='<<=' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW 6 // RUN: %clangxx -DTOO_LOW -DOP='>>=' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_LOW 7 // RUN: %clangxx -DTOO_HIGH -DOP='<<' -fsanitize=shift-exponent -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH 8 // RUN: %clangxx -DTOO_HIGH -DOP='>>' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH 9 // RUN: %clangxx -DTOO_HIGH -DOP='<<=' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH 10 // RUN: %clangxx -DTOO_HIGH -DOP='>>=' -fsanitize=shift -fno-sanitize-recover=shift %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TOO_HIGH 11 12 // RUN: %clangxx -DLSH_OVERFLOW -DOP='<<' -fsanitize=shift-exponent -fno-sanitize-recover=shift %s -o %t && %run %t 13 // RUN: %clangxx -DLSH_OVERFLOW -DOP='>>' -fsanitize=shift-exponent -fno-sanitize-recover=shift %s -o %t && %run %t 14 // RUN: %clangxx -DTOO_LOW -DOP='<<' -fsanitize=shift-base -fno-sanitize-recover=shift %s -o %t && %run %t 15 // RUN: %clangxx -DTOO_LOW -DOP='>>' -fsanitize=shift-base -fno-sanitize-recover=shift %s -o %t && %run %t 16 // RUN: %clangxx -DTOO_HIGH -DOP='<<' -fsanitize=shift-base -fno-sanitize-recover=shift %s -o %t && %run %t 17 // RUN: %clangxx -DTOO_HIGH -DOP='>>' -fsanitize=shift-base -fno-sanitize-recover=shift %s -o %t && %run %t 18 19 #include <stdint.h> 20 21 int main() { 22 int a = 1; 23 unsigned b = 1; 24 25 a <<= 31; // ok in C++11, not ok in C99/C11 26 b <<= 31; // ok 27 b <<= 1; // still ok, unsigned 28 29 #ifdef LSH_OVERFLOW 30 // CHECK-LSH_OVERFLOW: shift.cpp:[[@LINE+1]]:5: runtime error: left shift of negative value -2147483648 31 a OP 1; 32 #endif 33 34 #ifdef TOO_LOW 35 a = 0; 36 // CHECK-TOO_LOW: shift.cpp:[[@LINE+1]]:5: runtime error: shift exponent -3 is negative 37 a OP (-3); 38 #endif 39 40 #ifdef TOO_HIGH 41 a = 0; 42 // CHECK-TOO_HIGH: shift.cpp:[[@LINE+1]]:5: runtime error: shift exponent 32 is too large for 32-bit type 'int' 43 a OP 32; 44 #endif 45 } 46