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Diffstat (limited to 'test/Sema/unused-expr.c')
| -rw-r--r-- | test/Sema/unused-expr.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/test/Sema/unused-expr.c b/test/Sema/unused-expr.c index 522fda4..f5c64e6 100644 --- a/test/Sema/unused-expr.c +++ b/test/Sema/unused-expr.c @@ -1,4 +1,4 @@ -// RUN: clang-cc -fsyntax-only -verify -fno-math-errno %s +// RUN: %clang_cc1 -fsyntax-only -verify -fno-math-errno %s int foo(int X, int Y); @@ -87,12 +87,20 @@ int fn3() __attribute__ ((const)); int t6() { if (fn1() < 0 || fn2(2,1) < 0 || fn3(2) < 0) // no warnings return -1; - + fn1(); // expected-warning {{ignoring return value of function declared with warn_unused_result attribute}} fn2(92, 21); // expected-warning {{ignoring return value of function declared with pure attribute}} fn3(42); // expected-warning {{ignoring return value of function declared with const attribute}} + __builtin_fabsf(0); // expected-warning {{ignoring return value of function declared with const attribute}} return 0; } -int t7 __attribute__ ((warn_unused_result)); // expected-warning {{warning: 'warn_unused_result' attribute only applies to function types}} +int t7 __attribute__ ((warn_unused_result)); // expected-warning {{'warn_unused_result' attribute only applies to function types}} + +// PR4010 +int (*fn4)(void) __attribute__ ((warn_unused_result)); +void t8() { + fn4(); // expected-warning {{ignoring return value of function declared with warn_unused_result attribute}} +} +void t9() __attribute__((warn_unused_result)); // expected-warning {{attribute 'warn_unused_result' cannot be applied to functions without return value}} |
