diff options
Diffstat (limited to 'test/Sema/zero-initializer.c')
| -rw-r--r-- | test/Sema/zero-initializer.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Sema/zero-initializer.c b/test/Sema/zero-initializer.c new file mode 100644 index 000000000000..0ab410d4c6d5 --- /dev/null +++ b/test/Sema/zero-initializer.c @@ -0,0 +1,41 @@ +// RUN: %clang_cc1 -std=c99 -Wmissing-field-initializers -Wmissing-braces -verify %s + +// Tests that using {0} in struct initialization or assignment is supported +struct foo { int x; int y; }; +struct bar { struct foo a; struct foo b; }; +struct A { int a; }; +struct B { struct A a; }; +struct C { struct B b; }; +struct D { struct C c; int n; }; + +int main(void) +{ + struct foo f = { 0 }; // no-warning + struct foo g = { 9 }; // expected-warning {{missing field 'y' initializer}} + struct foo h = { 9, 9 }; // no-warning + struct bar i = { 0 }; // no-warning + struct bar j = { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}} + struct bar k = { { 9, 9 }, { 9, 9 } }; // no-warning + struct bar l = { { 9, 9 }, { 0 } }; // no-warning + struct bar m = { { 0 }, { 0 } }; // no-warning + struct bar n = { { 0 }, { 9, 9 } }; // no-warning + struct bar o = { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}} + struct C p = { 0 }; // no-warning + struct C q = { 9 }; // warning suppressed for struct with single element + struct D r = { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}} + f = (struct foo ) { 0 }; // no-warning + g = (struct foo ) { 9 }; // expected-warning {{missing field 'y' initializer}} + h = (struct foo ) { 9, 9 }; // no-warning + i = (struct bar) { 0 }; // no-warning + j = (struct bar) { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}} + k = (struct bar) { { 9, 9 }, { 9, 9 } }; // no-warning + l = (struct bar) { { 9, 9 }, { 0 } }; // no-warning + m = (struct bar) { { 0 }, { 0 } }; // no-warning + n = (struct bar) { { 0 }, { 9, 9 } }; // no-warning + o = (struct bar) { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}} + p = (struct C) { 0 }; // no-warning + q = (struct C) { 9 }; // warning suppressed for struct with single element + r = (struct D) { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}} + + return 0; +} |