forked from OSchip/llvm-project
566 lines
12 KiB
C
566 lines
12 KiB
C
// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wtautological-constant-in-range-compare -DTEST -verify %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wtautological-constant-in-range-compare -DTEST -verify -x c++ %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wtautological-type-limit-compare -DTEST -verify %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wtautological-type-limit-compare -DTEST -verify -x c++ %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wextra -Wno-sign-compare -verify %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wextra -Wno-sign-compare -verify -x c++ %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wall -verify %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -Wall -verify -x c++ %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsyntax-only -verify -x c++ %s
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int value(void);
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#define macro(val) val
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#ifdef __cplusplus
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template<typename T>
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void TFunc() {
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// Make sure that we do warn for normal variables in template functions !
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unsigned char c = value();
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#ifdef TEST
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if (c > 255) // expected-warning {{comparison 'unsigned char' > 255 is always false}}
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return;
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#else
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if (c > 255)
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return;
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#endif
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if (c > macro(255))
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return;
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T v = value();
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if (v > 255)
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return;
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if (v > 32767)
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return;
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}
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#endif
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int main()
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{
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#ifdef __cplusplus
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TFunc<unsigned char>();
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TFunc<signed short>();
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#endif
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short s = value();
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#ifdef TEST
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if (s == 32767)
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return 0;
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if (s != 32767)
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return 0;
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if (s < 32767)
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return 0;
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if (s <= 32767) // expected-warning {{comparison 'short' <= 32767 is always true}}
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return 0;
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if (s > 32767) // expected-warning {{comparison 'short' > 32767 is always false}}
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return 0;
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if (s >= 32767)
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return 0;
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if (32767 == s)
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return 0;
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if (32767 != s)
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return 0;
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if (32767 < s) // expected-warning {{comparison 32767 < 'short' is always false}}
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return 0;
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if (32767 <= s)
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return 0;
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if (32767 > s)
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return 0;
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if (32767 >= s) // expected-warning {{comparison 32767 >= 'short' is always true}}
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return 0;
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// FIXME: assumes two's complement
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if (s == -32768)
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return 0;
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if (s != -32768)
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return 0;
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if (s < -32768) // expected-warning {{comparison 'short' < -32768 is always false}}
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return 0;
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if (s <= -32768)
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return 0;
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if (s > -32768)
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return 0;
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if (s >= -32768) // expected-warning {{comparison 'short' >= -32768 is always true}}
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return 0;
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if (-32768 == s)
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return 0;
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if (-32768 != s)
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return 0;
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if (-32768 < s)
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return 0;
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if (-32768 <= s) // expected-warning {{comparison -32768 <= 'short' is always true}}
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return 0;
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if (-32768 > s) // expected-warning {{comparison -32768 > 'short' is always false}}
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return 0;
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if (-32768 >= s)
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return 0;
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// Note: both sides are promoted to unsigned long prior to the comparison, so
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// it is perfectly possible for a short to compare greater than 32767UL.
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if (s == 32767UL)
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return 0;
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if (s != 32767UL)
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return 0;
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if (s < 32767UL)
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return 0;
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if (s <= 32767UL)
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return 0;
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if (s > 32767UL)
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return 0;
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if (s >= 32767UL)
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return 0;
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if (32767UL == s)
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return 0;
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if (32767UL != s)
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return 0;
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if (32767UL < s)
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return 0;
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if (32767UL <= s)
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return 0;
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if (32767UL > s)
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return 0;
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if (32767UL >= s)
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return 0;
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enum { ULONG_MAX = (2UL * (unsigned long)__LONG_MAX__ + 1UL) };
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if (s == 2UL * (unsigned long)__LONG_MAX__ + 1UL)
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return 0;
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if (s != 2UL * (unsigned long)__LONG_MAX__ + 1UL)
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return 0;
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if (s < 2UL * (unsigned long)__LONG_MAX__ + 1UL)
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return 0;
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if (s <= 2UL * (unsigned long)__LONG_MAX__ + 1UL) // expected-warning-re {{comparison 'short' <= {{.*}} is always true}}
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return 0;
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if (s > 2UL * (unsigned long)__LONG_MAX__ + 1UL) // expected-warning-re {{comparison 'short' > {{.*}} is always false}}
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return 0;
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if (s >= 2UL * (unsigned long)__LONG_MAX__ + 1UL)
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL == s)
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL != s)
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL < s) // expected-warning-re {{comparison {{.*}} < 'short' is always false}}
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL <= s)
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL > s)
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return 0;
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if (2UL * (unsigned long)__LONG_MAX__ + 1UL >= s) // expected-warning-re {{comparison {{.*}} >= 'short' is always true}}
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return 0;
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// FIXME: assumes two's complement
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if (s == -32768L)
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return 0;
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if (s != -32768L)
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return 0;
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if (s < -32768L) // expected-warning {{comparison 'short' < -32768 is always false}}
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return 0;
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if (s <= -32768L)
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return 0;
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if (s > -32768L)
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return 0;
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if (s >= -32768L) // expected-warning {{comparison 'short' >= -32768 is always true}}
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return 0;
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if (-32768L == s)
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return 0;
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if (-32768L != s)
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return 0;
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if (-32768L < s)
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return 0;
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if (-32768L <= s) // expected-warning {{comparison -32768 <= 'short' is always true}}
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return 0;
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if (-32768L > s) // expected-warning {{comparison -32768 > 'short' is always false}}
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return 0;
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if (-32768L >= s)
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return 0;
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#else
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// expected-no-diagnostics
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if (s == 32767)
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return 0;
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if (s != 32767)
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return 0;
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if (s < 32767)
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return 0;
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if (s <= 32767)
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return 0;
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if (s > 32767)
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return 0;
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if (s >= 32767)
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return 0;
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if (32767 == s)
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return 0;
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if (32767 != s)
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return 0;
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if (32767 < s)
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return 0;
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if (32767 <= s)
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return 0;
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if (32767 > s)
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return 0;
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if (32767 >= s)
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return 0;
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// FIXME: assumes two's complement
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if (s == -32768)
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return 0;
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if (s != -32768)
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return 0;
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if (s < -32768)
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return 0;
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if (s <= -32768)
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return 0;
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if (s > -32768)
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return 0;
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if (s >= -32768)
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return 0;
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if (-32768 == s)
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return 0;
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if (-32768 != s)
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return 0;
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if (-32768 < s)
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return 0;
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if (-32768 <= s)
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return 0;
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if (-32768 > s)
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return 0;
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if (-32768 >= s)
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return 0;
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if (s == 32767UL)
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return 0;
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if (s != 32767UL)
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return 0;
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if (s < 32767UL)
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return 0;
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if (s <= 32767UL)
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return 0;
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if (s > 32767UL)
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return 0;
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if (s >= 32767UL)
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return 0;
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if (32767UL == s)
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return 0;
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if (32767UL != s)
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return 0;
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if (32767UL < s)
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return 0;
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if (32767UL <= s)
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return 0;
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if (32767UL > s)
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return 0;
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if (32767UL >= s)
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return 0;
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// FIXME: assumes two's complement
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if (s == -32768L)
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return 0;
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if (s != -32768L)
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return 0;
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if (s < -32768L)
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return 0;
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if (s <= -32768L)
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return 0;
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if (s > -32768L)
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return 0;
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if (s >= -32768L)
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return 0;
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if (-32768L == s)
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return 0;
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if (-32768L != s)
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return 0;
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if (-32768L < s)
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return 0;
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if (-32768L <= s)
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return 0;
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if (-32768L > s)
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return 0;
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if (-32768L >= s)
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return 0;
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#endif
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if (s == 0)
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return 0;
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if (s != 0)
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return 0;
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if (s < 0)
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return 0;
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if (s <= 0)
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return 0;
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if (s > 0)
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return 0;
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if (s >= 0)
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return 0;
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if (0 == s)
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return 0;
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if (0 != s)
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return 0;
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if (0 < s)
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return 0;
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if (0 <= s)
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return 0;
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if (0 > s)
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return 0;
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if (0 >= s)
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return 0;
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unsigned short us = value();
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#ifdef TEST
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if (us == 65535)
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return 0;
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if (us != 65535)
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return 0;
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if (us < 65535)
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return 0;
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if (us <= 65535) // expected-warning {{comparison 'unsigned short' <= 65535 is always true}}
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return 0;
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if (us > 65535) // expected-warning {{comparison 'unsigned short' > 65535 is always false}}
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return 0;
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if (us >= 65535)
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return 0;
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if (65535 == us)
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return 0;
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if (65535 != us)
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return 0;
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if (65535 < us) // expected-warning {{comparison 65535 < 'unsigned short' is always false}}
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return 0;
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if (65535 <= us)
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return 0;
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if (65535 > us)
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return 0;
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if (65535 >= us) // expected-warning {{comparison 65535 >= 'unsigned short' is always true}}
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return 0;
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if (us == 65535UL)
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return 0;
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if (us != 65535UL)
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return 0;
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if (us < 65535UL)
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return 0;
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if (us <= 65535UL) // expected-warning {{comparison 'unsigned short' <= 65535 is always true}}
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return 0;
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if (us > 65535UL) // expected-warning {{comparison 'unsigned short' > 65535 is always false}}
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return 0;
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if (us >= 65535UL)
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return 0;
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if (65535UL == us)
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return 0;
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if (65535UL != us)
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return 0;
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if (65535UL < us) // expected-warning {{comparison 65535 < 'unsigned short' is always false}}
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return 0;
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if (65535UL <= us)
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return 0;
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if (65535UL > us)
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return 0;
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if (65535UL >= us) // expected-warning {{comparison 65535 >= 'unsigned short' is always true}}
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return 0;
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#else
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// expected-no-diagnostics
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if (us == 65535)
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return 0;
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if (us != 65535)
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return 0;
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if (us < 65535)
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return 0;
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if (us <= 65535)
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return 0;
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if (us > 65535)
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return 0;
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if (us >= 65535)
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return 0;
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if (65535 == us)
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return 0;
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if (65535 != us)
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return 0;
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if (65535 < us)
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return 0;
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if (65535 <= us)
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return 0;
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if (65535 > us)
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return 0;
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if (65535 >= us)
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return 0;
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if (us == 65535UL)
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return 0;
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if (us != 65535UL)
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return 0;
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if (us < 65535UL)
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return 0;
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if (us <= 65535UL)
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return 0;
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if (us > 65535UL)
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return 0;
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if (us >= 65535UL)
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return 0;
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if (65535UL == us)
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return 0;
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if (65535UL != us)
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return 0;
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if (65535UL < us)
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return 0;
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if (65535UL <= us)
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return 0;
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if (65535UL > us)
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return 0;
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if (65535UL >= us)
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return 0;
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#endif
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if (us == 32767)
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return 0;
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if (us != 32767)
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return 0;
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if (us < 32767)
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return 0;
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if (us <= 32767)
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return 0;
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if (us > 32767)
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return 0;
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if (us >= 32767)
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return 0;
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|
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if (32767 == us)
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return 0;
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if (32767 != us)
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return 0;
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if (32767 < us)
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return 0;
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if (32767 <= us)
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return 0;
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if (32767 > us)
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return 0;
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if (32767 >= us)
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return 0;
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|
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if (us == 32767UL)
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return 0;
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if (us != 32767UL)
|
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return 0;
|
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if (us < 32767UL)
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return 0;
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if (us <= 32767UL)
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return 0;
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if (us > 32767UL)
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return 0;
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if (us >= 32767UL)
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return 0;
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|
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if (32767UL == us)
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return 0;
|
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if (32767UL != us)
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return 0;
|
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if (32767UL < us)
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return 0;
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if (32767UL <= us)
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return 0;
|
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if (32767UL > us)
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return 0;
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if (32767UL >= us)
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return 0;
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#if __SIZEOF_INT128__
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__int128 i128 = value();
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if (i128 == -1) // used to crash
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return 0;
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#endif
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enum E {
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yes,
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no,
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maybe
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};
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enum E e = (enum E)value();
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|
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if (e == yes)
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return 0;
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if (e != yes)
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return 0;
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if (e < yes)
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return 0;
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|
if (e <= yes)
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return 0;
|
|
if (e > yes)
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return 0;
|
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if (e >= yes)
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return 0;
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|
|
if (yes == e)
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return 0;
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if (yes != e)
|
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return 0;
|
|
if (yes < e)
|
|
return 0;
|
|
if (yes <= e)
|
|
return 0;
|
|
if (yes > e)
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|
return 0;
|
|
if (yes >= e)
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|
return 0;
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|
|
if (e == maybe)
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return 0;
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|
if (e != maybe)
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|
return 0;
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|
if (e < maybe)
|
|
return 0;
|
|
if (e <= maybe)
|
|
return 0;
|
|
if (e > maybe)
|
|
return 0;
|
|
if (e >= maybe)
|
|
return 0;
|
|
|
|
if (maybe == e)
|
|
return 0;
|
|
if (maybe != e)
|
|
return 0;
|
|
if (maybe < e)
|
|
return 0;
|
|
if (maybe <= e)
|
|
return 0;
|
|
if (maybe > e)
|
|
return 0;
|
|
if (maybe >= e)
|
|
return 0;
|
|
|
|
// For the time being, use the declared type of bit-fields rather than their
|
|
// length when determining whether a value is in-range.
|
|
// FIXME: Reconsider this.
|
|
struct A {
|
|
int a : 3;
|
|
unsigned b : 3;
|
|
long c : 3;
|
|
unsigned long d : 3;
|
|
} a;
|
|
if (a.a < 3) {}
|
|
if (a.a < 4) {}
|
|
if (a.b < 7) {}
|
|
if (a.b < 8) {}
|
|
if (a.c < 3) {}
|
|
if (a.c < 4) {}
|
|
if (a.d < 7) {}
|
|
if (a.d < 8) {}
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|
|
return 1;
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|
}
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