diff options
| -rw-r--r-- | generic/tclStubLib.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c index 1ab7ff3..b204306 100644 --- a/generic/tclStubLib.c +++ b/generic/tclStubLib.c @@ -38,19 +38,40 @@ TclIntPlatStubs *tclIntPlatStubsPtr = NULL; static TclStubs * HasStubSupport _ANSI_ARGS_((Tcl_Interp *interp)); +typedef Tcl_Obj *(NewStringObjProc) _ANSI_ARGS_((CONST char *bytes, + size_t length)); + + static TclStubs * HasStubSupport (interp) Tcl_Interp *interp; { Interp *iPtr = (Interp *) interp; - if (iPtr->stubTable && (iPtr->stubTable->magic == TCL_STUB_MAGIC)) { - return iPtr->stubTable; + if (!iPtr->stubTable) { + /* No stub table at all? Nothing we can do. */ + return NULL; } - interp->result = "This interpreter does not support stubs-enabled extensions."; - interp->freeProc = TCL_STATIC; - - return NULL; + if (iPtr->stubTable->magic != TCL_STUB_MAGIC) { + /* + * We cannot acces interp->result and interp->freeProc + * any more: They will be gone in Tcl 9. In stead, + * assume that the iPtr->stubTable entry from Tcl_Interp + * and the Tcl_NewStringObj() and Tcl_SetObjResult() entries + * in the stub table don't change in Tcl 9. Need to add + * a test-case in Tcl 9 to assure that. + * + * The signature of Tcl_NewStringObj will change: the length + * parameter will be of type size_t. But passing the value + * (size_t)-1 will work, whatever the signature will be. + */ + NewStringObjProc *newStringObj = (NewStringObjProc *) + iPtr->stubTable->tcl_NewStringObj; + iPtr->stubTable->tcl_SetObjResult(interp, newStringObj( + "This extension is compiled for Tcl 8.x", (size_t)-1)); + return NULL; + } + return iPtr->stubTable; } /* |