67e2298311
For this patch, a simple search was performed for patterns where there are two types (usually an LHS and an RHS) which are structurally the same, and there is some result type which is resolved as either one of them (typically LHS for consistency). We change those cases to resolve as the common sugared type between those two, utilizing the new infrastructure created for this purpose. Signed-off-by: Matheus Izvekov <mizvekov@gmail.com> Differential Revision: https://reviews.llvm.org/D111509
32 lines
1.3 KiB
C++
32 lines
1.3 KiB
C++
// RUN: %clangxx -DSUB_I32 -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=CHECK-SUB_I32
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// RUN: %clangxx -DSUB_I64 -fsanitize=signed-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=CHECK-SUB_I64
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// RUN: %clangxx -DSUB_I128 -fsanitize=signed-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck %s --check-prefix=CHECK-SUB_I128
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#include <stdint.h>
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#include <stdio.h>
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int main() {
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// These promote to 'int'.
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(void)(int8_t(-2) - int8_t(0x7f));
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(void)(int16_t(-2) - int16_t(0x7fff));
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#ifdef SUB_I32
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(void)(int32_t(-2) - int32_t(0x7fffffff));
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// CHECK-SUB_I32: sub-overflow.cpp:[[@LINE-1]]:22: runtime error: signed integer overflow: -2 - 2147483647 cannot be represented in type '{{int32_t|int}}'
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#endif
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#ifdef SUB_I64
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(void)(int64_t(-8000000000000000000ll) - int64_t(2000000000000000000ll));
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// CHECK-SUB_I64: -8000000000000000000 - 2000000000000000000 cannot be represented in type '{{int64_t|long( long)?}}'
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#endif
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#ifdef SUB_I128
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# if defined(__SIZEOF_INT128__) && !defined(_WIN32)
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(void)(-(__int128_t(1) << 126) - (__int128_t(1) << 126) - 1);
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# else
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puts("__int128 not supported");
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# endif
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// CHECK-SUB_I128: {{0x80000000000000000000000000000000 - 1 cannot be represented in type '__int128_t'|__int128 not supported}}
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#endif
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}
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