https://bugs.llvm.org/show_bug.cgi?id=42604
Bug ID: 42604
Summary: -Wuninitialized for struct assignment from GNU C
statement expression
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangb...@nondot.org
Reporter: ndesaulni...@google.com
CC: a...@linaro.org, blitzrak...@gmail.com,
dgre...@apple.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, natechancel...@gmail.com,
richard-l...@metafoo.co.uk, srhi...@google.com
Consider the following example:
void init(int*);
void foo(void) {
int i = ({
init(&i);
i;
});
}
struct widget {
int x, y;
};
void init2(struct widget*);
void bar(void) {
struct widget my_widget = ({
init2(&my_widget);
my_widget;
});
}
warning: variable 'my_widget' is uninitialized when used within its own
initialization [-Wuninitialized]
It seems like it's ok to do so for non-aggregate types, but aggregates issue
the warning. I think it should not be a warning here?
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