https://llvm.org/bugs/show_bug.cgi?id=23159
Bug ID: 23159
Summary: Warning for ODR violation
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Richard provided to me this example showing ODR violation:
#include <utility>
// implicitly internal linkage due to 'const'
const int n = 5;
// odr violation, captures n by reference
inline auto f() { return std::make_pair(n, 3); }
// much more obvious odr violation, takes address of n
inline auto g() {
static const int *p = &n;
return p;
}
Clang compiles this, however, without issuing any warnings. Taking the address
of a variable with internal linkage in an inline function is probably not a
good idea.
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