https://bugs.llvm.org/show_bug.cgi?id=39203
Bug ID: 39203
Summary: include/c++/v1/__debug:259 : ubsan reports an error
with _LIBCPP_DEBUG=1.
Product: libc++
Version: 7.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: pawel_sik...@zoho.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
#include <vector>
int main()
{
std::vector< int > v;
return 0;
}
$ clang++ -Wall -g2 -fsanitize=undefined -D_LIBCPP_DEBUG=1 -stdlib=libc++ t.cpp
-o t
$ ./t
(...)/include/c++/v1/__debug:259:40: runtime error: member access within
address 0x0000028a02b0 which does not point to an object of type
'std::__1::__c_node'
0x0000028a02b0: note: object has invalid vptr
00 00 00 00 00 00 00 00 00 00 00 00 08 27 31 f7 fc 7f 00 00 00 00 00 00 00
00 00 00 00 00 00 00
^~~~~~~~~~~~~~~~~~~~~~~
invalid vptr
(...)/include/c++/v1/__debug:259:51: runtime error: member access within
address 0x0000028a02b0 which does not point to an object of type
'std::__1::__c_node'
0x0000028a02b0: note: object has invalid vptr
00 00 00 00 00 00 00 00 00 00 00 00 08 27 31 f7 fc 7f 00 00 00 00 00 00 00
00 00 00 00 00 00 00
^~~~~~~~~~~~~~~~~~~~~~~
invalid vptr
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