forked from OSchip/llvm-project
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
// RUN: %clang -x c -fsanitize=implicit-integer-sign-change -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c -fsanitize=implicit-integer-sign-change -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c -fsanitize=implicit-integer-sign-change -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c -fsanitize=implicit-integer-sign-change -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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// RUN: %clang -x c++ -fsanitize=implicit-integer-sign-change -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not="implicit conversion" --check-prefixes=CHECK
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void test_unsigned() {
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unsigned char x;
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x = 0;
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x++;
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x = 0;
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++x;
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x = 0;
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x--;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'unsigned char' changed the value to 255 (8-bit, unsigned)
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x = 0;
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--x;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value -1 (32-bit, signed) to type 'unsigned char' changed the value to 255 (8-bit, unsigned)
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x = 1;
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x++;
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x = 1;
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++x;
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x = 1;
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x--;
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x = 1;
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--x;
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x = 254;
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x++;
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x = 254;
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++x;
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x = 254;
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x--;
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x = 254;
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--x;
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x = 255;
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x++;
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x = 255;
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++x;
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x = 255;
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x--;
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x = 255;
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--x;
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}
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void test_signed() {
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signed char x;
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x = -128;
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x++;
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x = -128;
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++x;
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x = -128;
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x--;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value -129 (32-bit, signed) to type 'signed char' changed the value to 127 (8-bit, signed)
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x = -128;
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--x;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value -129 (32-bit, signed) to type 'signed char' changed the value to 127 (8-bit, signed)
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x = -1;
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x++;
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x = -1;
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++x;
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x = -1;
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x--;
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x = -1;
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--x;
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x = 0;
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x++;
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x = 0;
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++x;
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x = 0;
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x--;
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x = 0;
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--x;
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x = 1;
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x++;
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x = 1;
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++x;
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x = 1;
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x--;
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x = 1;
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--x;
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x = 127;
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x++;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:4: runtime error: implicit conversion from type 'int' of value 128 (32-bit, signed) to type 'signed char' changed the value to -128 (8-bit, signed)
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x = 127;
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++x;
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// CHECK: {{.*}}integer-sign-change-incdec.c:[[@LINE-1]]:3: runtime error: implicit conversion from type 'int' of value 128 (32-bit, signed) to type 'signed char' changed the value to -128 (8-bit, signed)
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x = 127;
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x--;
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x = 127;
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--x;
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}
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int main() {
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test_unsigned();
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test_signed();
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return 0;
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}
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