https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114763
Bug ID: 114763
Summary: Wduplicated-branches just check last else if-else
case?
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: hanwei62 at huawei dot com
Target Milestone: ---
This code:
void foo(int x) {
if (x) {
x -= 2;
} else if (x > 50) {
x -= 2;
} else
x += 2;
}
# gcc -c test.c -Wduplicated-branches
not warning, even if-else if branches is same.
void foo(int x) {
if (x) {
x -= 2;
} else if (x > 50) {
x -= 2;
} else if (x < 20) {
x += 2;
} else {
x += 2;
}
}
warning.
Same like https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85094
What I find that Wduplicated-branches just check the last `else if-else`
branches.
https://godbolt.org/z/WP8v5P4Yf
It's misleading.
