Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 395 by [email protected]: pointer not owned error when calling
malloc_usable_size() on array of structs with destructors
https://code.google.com/p/address-sanitizer/issues/detail?id=395
adar@adar-ThinkPad-T540p:/tmp$ cat test.cc
#include <malloc.h>
struct Blah {
~Blah() {}
long long a;
};
int main(int argc, char* argv[]) {
Blah* foo = new Blah[1];
malloc_usable_size(foo);
delete [] foo;
return 0;
}
adar@adar-ThinkPad-T540p:/tmp$ ~/Source/llvm-build/bin/clang++
-fsanitize=address -o test test.cc
adar@adar-ThinkPad-T540p:/tmp$ ./test
=================================================================
==16156==ERROR: AddressSanitizer: attempting to call malloc_usable_size()
for pointer which is not owned: 0x60200000eff8
#0 0x4b4ed0 (/tmp/test+0x4b4ed0)
#1 0x4e36e5 (/tmp/test+0x4e36e5)
#2 0x7f4bcff8ba3f (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f)
#3 0x418fd8 (/tmp/test+0x418fd8)
0x60200000eff8 is located 8 bytes inside of 16-byte region
[0x60200000eff0,0x60200000f000)
allocated by thread T0 here:
#0 0x4e0ab0 (/tmp/test+0x4e0ab0)
#1 0x4e36b7 (/tmp/test+0x4e36b7)
#2 0x7f4bcff8ba3f (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f)
SUMMARY: AddressSanitizer: bad-malloc_usable_size (/tmp/test+0x4b4ed0)
==16156==ABORTING
This is using clang from the top of trunk, though I've reproduced it with
clang 3.6 as well.
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