* generic/tcl.h: Revised Tcl_InitStubs() to restore Tcl 8.4

        * generic/tclPkg.c:     source compatibility with callers of
        * generic/tclStubLib.c: Tcl_InitStubs(interp, TCL_VERSION, 1).
        [Bug 1578344].

3 files changed, 70 insertions, 5 deletions

diff --git a/generic/tcl.h b/generic/tcl.h
index 5df7989..5ddbc1b 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 1.234 2007/07/31 17:03:35 msofer Exp $
+ * RCS: @(#) $Id: tcl.h,v 1.235 2007/09/17 14:50:43 dgp Exp $
  */
 
 #ifndef _TCL
@@ -2216,7 +2216,7 @@ EXTERN CONST char*	TclTomMathInitializeStubs(Tcl_Interp* interp,
  */
 
 #define Tcl_InitStubs(interp, version, exact) \
-    Tcl_PkgRequire(interp, "Tcl", version, exact)
+    Tcl_PkgInitStubsCheck(interp, version, exact)
 
 #endif
 
@@ -2232,6 +2232,9 @@ EXTERN CONST char*	TclTomMathInitializeStubs(Tcl_Interp* interp,
 EXTERN void Tcl_Main _ANSI_ARGS_((int argc, char **argv,
 	Tcl_AppInitProc *appInitProc));
 
+EXTERN CONST char *Tcl_PkgInitStubsCheck _ANSI_ARGS_((Tcl_Interp *interp,
+			    CONST char *version, int exact));
+
 /*
  * Include the public function declarations that are accessible via the stubs
  * table.
diff --git a/generic/tclPkg.c b/generic/tclPkg.c
index 8fc4d9f..b9874f5 100644
--- a/generic/tclPkg.c
+++ b/generic/tclPkg.c
@@ -10,7 +10,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclPkg.c,v 1.29 2007/09/11 17:46:07 dgp Exp $
+ * RCS: @(#) $Id: tclPkg.c,v 1.30 2007/09/17 14:50:44 dgp Exp $
  *
  * TIP #268.
  * Heavily rewritten to handle the extend version numbers, and extended
@@ -1825,6 +1825,50 @@ RequirementSatisfied(
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_PkgInitStubsCheck --
+ *
+ *	This is a replacement routine for Tcl_InitStubs() that is called
+ *	from code where -DUSE_TCL_STUBS has not been enabled.
+ *
+ * Results:
+ *	Returns the version of a conforming stubs table, or NULL, if
+ *	the table version doesn't satisfy the requested requirements,
+ *	according to historical practice.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+CONST char *
+Tcl_PkgInitStubsCheck(
+    Tcl_Interp *interp,
+    CONST char * version,
+    int exact)
+{
+    CONST char *actualVersion = Tcl_PkgPresent(interp, "Tcl", version, 0);
+
+    if (exact && actualVersion) {
+	CONST char *p = version;
+	int count = 0;
+
+	while (*p) {
+	    count += !isdigit(*p++);
+	}
+	if (count == 1) {
+	    if (0 != strncmp(version, actualVersion, strlen(version))) {
+		return NULL;
+	    }
+	} else {
+	    return Tcl_PkgPresent(interp, "Tcl", version, 1);
+	}
+    }
+    return actualVersion;
+}
+/*
  * Local Variables:
  * mode: c
  * c-basic-offset: 4
diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c
index 5389cfc..be2a1fa 100644
--- a/generic/tclStubLib.c
+++ b/generic/tclStubLib.c
@@ -10,7 +10,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclStubLib.c,v 1.15 2007/05/16 18:28:40 jenglish Exp $
+ * RCS: @(#) $Id: tclStubLib.c,v 1.16 2007/09/17 14:50:44 dgp Exp $
  */
 
 /*
@@ -95,10 +95,28 @@ Tcl_InitStubs(
 	return NULL;
     }
 
-    actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, exact, &pkgData);
+    actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, 0, &pkgData);
     if (actualVersion == NULL) {
 	return NULL;
     }
+    if (exact) {
+	CONST char *p = version;
+	int count = 0;
+
+	while (*p) {
+	    count += !isdigit(*p++);
+	}
+	if (count == 1) {
+	    if (0 != strncmp(version, actualVersion, strlen(version))) {
+		return NULL;
+	    }
+	} else {
+	    actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, 1, NULL);
+	    if (actualVersion == NULL) {
+		return NULL;
+	    }
+	}
+    }
     tclStubsPtr = (TclStubs*)pkgData;
 
     if (tclStubsPtr->hooks) {