12d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s 26ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith 36ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith#include <stdint.h> 46ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith 56ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smithint main() { 66ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith // These promote to 'int'. 76ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith (void)(int8_t(-2) * int8_t(0x7f)); 86ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith (void)(int16_t(0x7fff) * int16_t(0x7fff)); 96ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith (void)(uint16_t(0xffff) * int16_t(0x7fff)); 106ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith (void)(uint16_t(0xffff) * uint16_t(0x8000)); 116ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith 127cbd7e502e993320a3a1578179d336c268b80604Will Dietz // CHECK: mul-overflow.cpp:13:27: runtime error: signed integer overflow: 65535 * 32769 cannot be represented in type 'int' 136ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith (void)(uint16_t(0xffff) * uint16_t(0x8001)); 146ebe45146a2d93eb010b9bb5ea34cb94c6900f83Richard Smith} 15