38 lines
1.7 KiB
C++
38 lines
1.7 KiB
C++
// RUN: %clang -DLSH_OVERFLOW -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=LSH_OVERFLOW
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// RUN: %clang -DLSH_OVERFLOW -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=LSH_OVERFLOW
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// RUN: %clang -DTOO_LOW -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW
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// RUN: %clang -DTOO_LOW -DOP='>>' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW
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// RUN: %clang -DTOO_LOW -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW
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// RUN: %clang -DTOO_LOW -DOP='>>=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_LOW
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// RUN: %clang -DTOO_HIGH -DOP='<<' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH
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// RUN: %clang -DTOO_HIGH -DOP='>>' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH
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// RUN: %clang -DTOO_HIGH -DOP='<<=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH
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// RUN: %clang -DTOO_HIGH -DOP='>>=' -fsanitize=shift %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=TOO_HIGH
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#include <stdint.h>
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int main() {
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int a = 1;
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unsigned b = 1;
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a <<= 31; // ok in C++11, not ok in C99/C11
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b <<= 31; // ok
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b <<= 1; // still ok, unsigned
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#ifdef LSH_OVERFLOW
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// CHECK-LSH_OVERFLOW: shift.cpp:24:5: runtime error: left shift of negative value -2147483648
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a OP 1;
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#endif
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#ifdef TOO_LOW
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// CHECK-TOO_LOW: shift.cpp:29:5: runtime error: shift exponent -3 is negative
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a OP (-3);
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#endif
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#ifdef TOO_HIGH
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a = 0;
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// CHECK-TOO_HIGH: shift.cpp:35:5: runtime error: shift exponent 32 is too large for 32-bit type 'int'
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a OP 32;
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#endif
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}
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