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author | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
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committer | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
commit | be1de4be954c80875ad4108e0a33e8e131b2f2c0 (patch) | |
tree | 1fbbecf276bf7c7bdcbb4dd446099d6d90eaa516 /clang/test/Sema/attr-unused.c | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
Diffstat (limited to 'clang/test/Sema/attr-unused.c')
-rw-r--r-- | clang/test/Sema/attr-unused.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/clang/test/Sema/attr-unused.c b/clang/test/Sema/attr-unused.c new file mode 100644 index 0000000..07c65cb --- /dev/null +++ b/clang/test/Sema/attr-unused.c @@ -0,0 +1,43 @@ +// RUN: %clang_cc1 -verify -Wunused -Wused-but-marked-unused -Wunused-parameter -Wunused -fsyntax-only %s + +static void (*fp0)(void) __attribute__((unused)); + +static void __attribute__((unused)) f0(void); + +// On K&R +int f1() __attribute__((unused)); + +int g0 __attribute__((unused)); + +int f2() __attribute__((unused(1, 2))); // expected-error {{attribute takes no arguments}} + +struct Test0_unused {} __attribute__((unused)); +struct Test0_not_unused {}; +typedef int Int_unused __attribute__((unused)); +typedef int Int_not_unused; + +void test0() { + int x; // expected-warning {{unused variable}} + + Int_not_unused i0; // expected-warning {{unused variable}} + Int_unused i1; // expected-warning {{'Int_unused' was marked unused but was used}} + + struct Test0_not_unused s0; // expected-warning {{unused variable}} + struct Test0_unused s1; // expected-warning {{'Test0_unused' was marked unused but was used}} +} + +int f3(int x) { // expected-warning{{unused parameter 'x'}} + return 0; +} + +int f4(int x) { + return x; +} + +int f5(int x __attribute__((__unused__))) { + return 0; +} + +int f6(int x __attribute__((__unused__))) { + return x; // expected-warning{{'x' was marked unused but was used}} +} |