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fa52e00c85
Summary:
D28148 relaxed some checks for assigning { 0 } to a structure for all C
standards, but it failed to handle structures with non-integer
subobjects. Relax -Wmissing-braces checks for such structures, and add
some additional tests.
This fixes PR39931.
Patch By: al3xtjames
Reviewed By: Lekensteyn
Differential Revision: https://reviews.llvm.org/D61838
llvm-svn: 366163
49 lines
2.6 KiB
C
49 lines
2.6 KiB
C
// RUN: %clang_cc1 -std=c99 -Wmissing-field-initializers -Wmissing-braces -verify %s
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// Tests that using {0} in struct initialization or assignment is supported
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struct foo { int x; int y; };
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struct bar { struct foo a; struct foo b; };
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struct A { int a; };
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struct B { struct A a; };
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struct C { struct B b; };
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struct D { struct C c; int n; };
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struct E { short e; };
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struct F { struct E e; int n; };
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int main(void)
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{
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struct foo f = { 0 }; // no-warning
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struct foo g = { 9 }; // expected-warning {{missing field 'y' initializer}}
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struct foo h = { 9, 9 }; // no-warning
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struct bar i = { 0 }; // no-warning
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struct bar j = { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}}
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struct bar k = { { 9, 9 }, { 9, 9 } }; // no-warning
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struct bar l = { { 9, 9 }, { 0 } }; // no-warning
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struct bar m = { { 0 }, { 0 } }; // no-warning
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struct bar n = { { 0 }, { 9, 9 } }; // no-warning
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struct bar o = { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}}
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struct C p = { 0 }; // no-warning
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struct C q = { 9 }; // warning suppressed for struct with single element
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struct D r = { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
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struct F s = { 0 }; // no-warning
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struct F t = { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
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f = (struct foo ) { 0 }; // no-warning
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g = (struct foo ) { 9 }; // expected-warning {{missing field 'y' initializer}}
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h = (struct foo ) { 9, 9 }; // no-warning
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i = (struct bar) { 0 }; // no-warning
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j = (struct bar) { 0, 0 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'b' initializer}}
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k = (struct bar) { { 9, 9 }, { 9, 9 } }; // no-warning
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l = (struct bar) { { 9, 9 }, { 0 } }; // no-warning
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m = (struct bar) { { 0 }, { 0 } }; // no-warning
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n = (struct bar) { { 0 }, { 9, 9 } }; // no-warning
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o = (struct bar) { { 9 }, { 9, 9 } }; // expected-warning {{missing field 'y' initializer}}
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p = (struct C) { 0 }; // no-warning
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q = (struct C) { 9 }; // warning suppressed for struct with single element
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r = (struct D) { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
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s = (struct F) { 0 }; // no-warning
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t = (struct F) { 9 }; // expected-warning {{suggest braces around initialization of subobject}} expected-warning {{missing field 'n' initializer}}
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return 0;
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}
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