[LLVMbugs] [Bug 20473] AddressSanitizer reports false positive global-buffer-overflow.
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Mon Jul 28 08:07:47 PDT 2014
http://llvm.org/bugs/show_bug.cgi?id=20473
piotr.szeplik at nsn.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
--- Comment #3 from piotr.szeplik at nsn.com ---
(In reply to comment #2)
> Isn't this an actual bug in the code that asan correctly reports?
>
> You are initializing a char array of 3 elements with "",
> which is a char array with 2 elements.
This is correct. It is guaranteed by the standard (section 8.5.2
[dcl.init.string] paragraph number 3) where you can read:
"If there are fewer initializers than there are array elements, each element
not explicitly initialized shall be zero-initialized."
Please also notice that the issue disappear if you change a layout of the
structure like below:
struct test
{
char b[3];
char a[2];
};
> (Please reopen the bug if you disagree)
OK.
Best regards,
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