| 1 | // RUN: %clangxx -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck --check-prefix=CHECK-INC %s |
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| 2 | // RUN: %clangxx -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck --check-prefix=CHECK-INC %s |
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| 3 | // RUN: %clangxx -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck --check-prefix=CHECK-DEC %s |
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| 4 | // RUN: %clangxx -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t4 && %run %t4 2>&1 | FileCheck --check-prefix=CHECK-DEC %s |
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| 5 | |
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| 6 | #include <stdint.h> |
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| 7 | |
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| 8 | int main() { |
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| 9 | unsigned n = 0xfffffffd; |
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| 10 | n++; |
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| 11 | n++; |
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| 12 | unsigned m = 0; |
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| 13 | // CHECK-INC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 4294967295 + 1 cannot be represented in type 'unsigned int' |
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| 14 | // CHECK-DEC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned int' |
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| 15 | OP; |
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| 16 | } |
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| 17 | |
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