http://llvm.org/bugs/show_bug.cgi?id=10870
Summary: buggy behaviour when exception is thrown from the
constructor
Product: clang
Version: 2.9
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
The attached example demonstrates what seems to be a bug in clang when an
exception is thrown from the constructor. Although the behaviour is different
whether the construction/allocation is static or dynamic, it is wrong in both
cases.
Constrast
$ make CXX=g++ # default
$ /ctorexcept static 1234
instances: 0
$ /ctorexcept dynamic 1234
instances: 0
with
$ make CXX=clang++
$ /ctorexcept static 1234
instances: 10
$ /ctorexcept dynamic 1234
# segmentation fault!
# according to valgrind it was an "Invalid free() / delete / delete[]"
If the destructor is not defined, which may be achieved compiling with
$ make CXX_FLAGS=-DISABLE_DTOR
no segmentation fault ocurrs in the dynamic case, making its behaviour seemly
identical to the static case.
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