[PATCH] [analyzer] Do not reinitialize static globals when the function is called more than once along a path

Ted Kremenek kremenek at apple.com
Wed Feb 6 23:57:26 PST 2013

On Feb 6, 2013, at 4:41 PM, Anna Zaks <ganna at apple.com> wrote:

>> $ cat t.mm
>> #include <stdio.h>
>> id foo(id x) {
>>   printf("%p\n", x);
>>   return x;
>> }
>> int main() {
>>   static id x = foo(x);
>> }
> What are the semantics in this case? Would the value be uninitialized or 0?

I believe the compiler zero-initializes 'x' before the initializer runs.  That's why the call to foo() prints out 0x0.  foo() could have returned a different pointer of course, and that is what gets stored to 'x' after running the initializer.
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