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TheRock/compiler/amd-llvm/clang/test/Sema/warn-integer-constants-in-ternary.c
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2026-09-02 16:34:47 -07:00

33 lines
1.3 KiB
C

// RUN: %clang_cc1 -x c -fsyntax-only -verify -Wtautological-constant-compare %s
// RUN: %clang_cc1 -x c -fsyntax-only -verify %s
// RUN: %clang_cc1 -x c++ -fsyntax-only -verify -Wtautological-constant-compare %s
// RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s
#define ONE 1
#define TWO 2
#define TERN(c, l, r) c ? l : r
#ifdef __cplusplus
typedef bool boolean;
#else
typedef _Bool boolean;
#endif
void test(boolean a) {
boolean r;
r = a ? (1) : TWO;
r = a ? 3 : TWO; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
r = a ? -2 : 0;
r = a ? 3 : -2; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
r = a ? 0 : TWO;
r = a ? 3 : ONE; // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
r = a ? ONE : 0;
r = a ? 0 : -0;
r = a ? 1 : 0;
r = a ? ONE : 0;
r = a ? ONE : ONE;
r = TERN(a, 4, 8); // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
r = TERN(a, -1, -8); // expected-warning {{converting the result of '?:' with integer constants to a boolean always evaluates to 'true'}}
}