https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71228
Bug ID: 71228
Summary: Add a warning when a variable gets initialised with
itself
Product: gcc
Version: 6.1.1
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at linkmauve dot fr
Target Milestone: ---
When a variable is initialised with itself, -Wuninitialized should emit a
warning since the variable wasn’t initialised at the time of this assignment.
The code in question (fix at https://github.com/SirCmpwn/aerc/pull/2.patch) can
be summarised this way (assuming -Wno-unused-parameter):
void test(int _value) {
int value = value;
}
For reference, clang 3.8.0 gives this warning:
warning: variable 'value' is uninitialized when used within its own
initialization [-Wuninitialized]
