https://bugs.llvm.org/show_bug.cgi?id=33999
Bug ID: 33999
Summary: Double destruction of object created in for loop
condition
Product: clang
Version: 4.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++11
Assignee: unassignedclangb...@nondot.org
Reporter: stephane.zimmerm...@trust-in-soft.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
The following code:
extern "C" int printf(const char *, ...);
struct Foo {
Foo() {
printf("CONSTRUCTOR\n");
}
~Foo() {
printf("DESTRUCTOR\n");
}
operator bool() {
static int guard = 0;
++guard;
return guard < 3;
}
};
int main(void) {
for( ; Foo f {}; 0)
continue;
}
displays:
CONSTRUCTOR
DESTRUCTOR
DESTRUCTOR
CONSTRUCTOR
DESTRUCTOR
DESTRUCTOR
CONSTRUCTOR
DESTRUCTOR
In the two iterations of the loop the object in condition is destroyed two
times. This does not happen if the increment is empty or without the
"continue;" statement.
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