1 // RUN: %clang -DLSH_OVERFLOW -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=LSH_OVERFLOW 2 // RUN: %clang -DLSH_OVERFLOW -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=LSH_OVERFLOW 3 // RUN: %clang -DTOO_LOW -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW 4 // RUN: %clang -DTOO_LOW -DOP='>>' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW 5 // RUN: %clang -DTOO_LOW -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW 6 // RUN: %clang -DTOO_LOW -DOP='>>=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW 7 // RUN: %clang -DTOO_HIGH -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH 8 // RUN: %clang -DTOO_HIGH -DOP='>>' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH 9 // RUN: %clang -DTOO_HIGH -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH 10 // RUN: %clang -DTOO_HIGH -DOP='>>=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH 11 12 #include <stdint.h> 13 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
