Hi all,
clang++ version 3.0 (trunk 132119)
Target: x86_64-unknown-linux-gnu
Thread model: posix
emits an error for the following code:
void puts(const char*);
struct X {};
void exx(X) {}
int main(int argc, char **argv)
{
if (argc > 3)
goto end;
X x;
exx(x);
end:
if (argc > 1) {
for (int i = 0; i < argc; ++i)
{
puts(argv[i]);
}
}
return 0;
}
c.cc:10:5: error: goto into protected scope
goto end;
^
c.cc:12:5: note: jump bypasses variable initialization
X x;
^
No errors from g++ version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
Comeau online:
Comeau C/C++ 4.3.10.1 (Oct 6 2008 11:28:09) for ONLINE_EVALUATION_BETA2
Copyright 1988-2008 Comeau Computing. All rights reserved.
MODE:strict errors C++ C++0x_extensions
In strict mode, with -tused, Compile succeeded
clang has been outvoted 2:1 
Csaba
P.S. compilation succeeds if the for loop is commented out.