https://bugs.llvm.org/show_bug.cgi?id=47640
Bug ID: 47640
Summary: -Wdangling-gsl only warns on initialization and not on
assignment
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
-Wdangling-gsl is a warning that catches dangling pointers. This warning
catches a lot of lifetime bugs, but it only does so during initialization.
Similar code that causes a dangling pointer during assignments does not get a
warning.
#include <string>
#include <string_view>
#include <memory>
std::string get_string();
std::unique_ptr<int> get_int();
int main() {
std::string_view sv = get_string(); // Warning on initialization
sv = get_string(); // No warning on assignment
int *p = get_int().get(); // Warning on initialization
p = get_int().get(); // No warning on assignment
}
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