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| author | dgp <dgp@users.sourceforge.net> | 2007-10-05 17:15:00 (GMT) |
|---|---|---|
| committer | dgp <dgp@users.sourceforge.net> | 2007-10-05 17:15:00 (GMT) |
| commit | 450ab8007a4bb80ea9ee89e2b79395b0139e2ede (patch) | |
| tree | f5bfee1844fa3040d4d1b350e47be6437b11096e /generic/tcl.h | |
| parent | 87b8d6fdaaf7099ddae37ea49806ee1f61ba80dd (diff) | |
| download | tcl-450ab8007a4bb80ea9ee89e2b79395b0139e2ede.zip tcl-450ab8007a4bb80ea9ee89e2b79395b0139e2ede.tar.gz tcl-450ab8007a4bb80ea9ee89e2b79395b0139e2ede.tar.bz2 | |
merge updates from HEAD
Diffstat (limited to 'generic/tcl.h')
| -rw-r--r-- | generic/tcl.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/generic/tcl.h b/generic/tcl.h index 3cc3084..01840de 100644 --- a/generic/tcl.h +++ b/generic/tcl.h @@ -13,7 +13,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tcl.h,v 1.231.2.6 2007/10/02 20:11:48 dgp Exp $ + * RCS: @(#) $Id: tcl.h,v 1.231.2.7 2007/10/05 17:15:01 dgp Exp $ */ #ifndef _TCL @@ -2296,10 +2296,11 @@ EXTERN CONST char *Tcl_PkgInitStubsCheck _ANSI_ARGS_((Tcl_Interp *interp, # define Tcl_IncrRefCount(objPtr) \ ++(objPtr)->refCount /* - * Use empty if ; else to handle use in unbraced outer if/else conditions + * Use do/while0 idiom for optimum correctness without compiler warnings + * http://c2.com/cgi/wiki?TrivialDoWhileLoop */ # define Tcl_DecrRefCount(objPtr) \ - if (--(objPtr)->refCount > 0) ; else TclFreeObj(objPtr) + do { if (--(objPtr)->refCount <= 0) TclFreeObj(objPtr); } while(0) # define Tcl_IsShared(objPtr) \ ((objPtr)->refCount > 1) #endif |