diff options
Diffstat (limited to 'generic/tcl.h')
| -rw-r--r-- | generic/tcl.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/generic/tcl.h b/generic/tcl.h index f7d54b5..09191df 100644 --- a/generic/tcl.h +++ b/generic/tcl.h @@ -2305,6 +2305,10 @@ TCLAPI void Tcl_GetMemoryInfo(Tcl_DString *dsPtr); /* * Use do/while0 idiom for optimum correctness without compiler warnings. * http://c2.com/cgi/wiki?TrivialDoWhileLoop + * + * Decrement refCount AFTER checking it for 0 or 1 (<2), because + * we cannot assume anymore that refCount is a signed type; In + * Tcl8 it was but in Tcl9 it is subject to change. */ # define Tcl_DecrRefCount(objPtr) \ do { \ |