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[creduce-bugs] A few crashes
- Subject: [creduce-bugs] A few crashes
- From: markus at trippelsdorf.de (Markus Trippelsdorf)
- Date: Tue, 17 Apr 2012 08:43:08 +0200
Please consider:
% cat test.ii
extern "C" class WvFastString;
typedef WvFastString& WvStringParm;
struct WvFastString {
~WvFastString();
operator char* () {}
};
class WvString : WvFastString {};
class WvAddr {};
class WvIPAddr : WvAddr {};
struct WvIPNet : WvIPAddr {
bool is_default() {}
};
template<class T, bool> struct WvTraits_Helper {
static void release(T *obj) {
delete obj;
}
};
template<class From> struct WvTraits {
static void release(From *obj) {
WvTraits_Helper<From, 0>::release(obj);
}
};
struct WvLink {
void *data;
WvLink *next;
bool autofree;
WvLink(bool, int) : autofree() {}
bool get_autofree() {}
void unlink() {
delete this;
}
};
struct WvListBase {
WvLink head, *tail;
WvListBase() : head(0, 0) {}
};
template<class T> struct WvList : WvListBase {
~WvList() {
zap();
}
void zap(bool destroy = 1) {
while (head.next) unlink_after(&head, destroy);
}
void unlink_after(WvLink *after, bool destroy) {
WvLink *next = 0;
T *obj = (destroy && next->get_autofree()) ?
static_cast<T*>(next->data) : 0;
if (tail) tail = after;
next->unlink();
WvTraits<T>::release(obj);
}
};
typedef WvList<WvString>WvStringListBase;
class WvStringList : WvStringListBase {};
class WvSubProc {
WvStringList last_args, env;
};
void addroute(WvIPNet& dest, WvStringParm table) {
if (dest.is_default() || (table != 0)) WvSubProc checkProc;
}
% clang_delta --transformation=copy-propagation --counter=1 test.ii
Stack dump:
0. test.ii:57:1: current parser token 'typedef'
[1] 2879 segmentation fault
% clang_delta --transformation=reduce-pointer-level --counter=3 test.ii
Stack dump:
0. <eof> parser at end of file
[1] 2910 segmentation fault
% clang_delta --transformation=rename-fun --counter=1 test.ii
Stack dump:
0. test.ii:23:1: current parser token 'struct'
[1] 4088 segmentation fault
% clang -v
clang version 3.1 (trunk)
Target: x86_64-unknown-linux-gnu
Thread model: posix
creduce % git describe
creduce-1.0.0-166-gc63daef
--
Markus