0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
65 lines
3.2 KiB
C
65 lines
3.2 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -Wtautological-overlap-compare %s
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#define mydefine 2
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void f(int x) {
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int y = 0;
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// > || <
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if (x > 2 || x < 1) { }
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if (x > 2 || x < 2) { }
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if (x != 2 || x != 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x > 2 || x < 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x > 0 || x < 0) { }
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if (x > 2 || x <= 1) { }
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if (x > 2 || x <= 2) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x > 2 || x <= 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 2 || x < 1) { }
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if (x >= 2 || x < 2) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 2 || x < 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 2 || x <= 1) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 2 || x <= 2) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 2 || x <= 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x >= 0 || x <= 0) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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// > && <
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if (x > 2 && x < 1) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 2 && x < 2) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 2 && x < 3) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 0 && x < 1) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 2 && x <= 1) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 2 && x <= 2) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x > 2 && x <= 3) { }
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if (x >= 2 && x < 1) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x >= 2 && x < 2) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x >= 2 && x < 3) { }
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if (x >= 0 && x < 0) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x >= 2 && x <= 1) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x >= 2 && x <= 2) { }
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if (x >= 2 && x <= 3) { }
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// !=, ==, ..
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if (x != 2 || x != 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x != 2 || x < 3) { } // expected-warning {{overlapping comparisons always evaluate to true}}
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if (x == 2 && x == 3) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x == 2 && x > 3) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x == 3 && x < 0) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (3 == x && x < 0) { } // expected-warning {{overlapping comparisons always evaluate to false}}
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if (x == mydefine && x > 3) { }
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if (x == (mydefine + 1) && x > 3) { }
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}
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// Don't generate a warning here.
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void array_out_of_bounds() {
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int x;
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int buffer[4];
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x = (-7 > 0) ? (buffer[-7]) : 0;
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}
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