[cfe-dev] ASan alloc-dealloc-mismatch and placement new
Stephan Bergmann via cfe-dev
cfe-dev at lists.llvm.org
Mon Nov 13 07:55:43 PST 2017
For a C++ program like
> #include <new>
> int main() {
> char * p1 = new char[sizeof (int)];
> int * p2 = new(p1) int;
> delete p2;
> }
compiling it with -fsanitize=address will somewhat unhelpfully report an
"AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs operator
delete)" failure.
Is there a good way to work around that (in the program's source code),
short of using the generic ASan facilities of suppressing or
blacklisting code, or using ASAN_OPTIONS=alloc_dealloc_mismatch=0 to
disable the check completely?
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