Line numbers wrong in compiled [unset].

FossilOrigin-Name: b7c97d29120c236af3e4ed461725eeb73178999d

3 files changed, 21 insertions, 7 deletions

diff --git a/generic/tclCompCmdsGR.c b/generic/tclCompCmdsGR.c
index 4e4a3af..43ea3d3 100644
--- a/generic/tclCompCmdsGR.c
+++ b/generic/tclCompCmdsGR.c
@@ -587,6 +587,7 @@ TclCompileInfoCommandsCmd(
      * that the result needs to be list-ified.
      */
 
+    /* TODO: Just push the known value */
     CompileWord(envPtr, tokenPtr,		interp, 1);
     TclEmitOpcode(	INST_RESOLVE_COMMAND,	envPtr);
     TclEmitOpcode(	INST_DUP,		envPtr);
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index d1eb9db..6c55e2e 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -2814,26 +2814,26 @@ TclCompileUnsetCmd(
     CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *varTokenPtr;
-    int isScalar, localIndex, numWords, flags, i;
+    int isScalar, localIndex, flags, i;
     Tcl_Obj *leadingWord;
     DefineLineInformation;	/* TIP #280 */
 
     /* TODO: Consider support for compiling expanded args. */
-    numWords = parsePtr->numWords-1;
     flags = 1;
+    i = 1;
     varTokenPtr = TokenAfter(parsePtr->tokenPtr);
     leadingWord = Tcl_NewObj();
-    if (numWords > 0 && TclWordKnownAtCompileTime(varTokenPtr, leadingWord)) {
+    if (parsePtr->numWords > 1 && TclWordKnownAtCompileTime(varTokenPtr, leadingWord)) {
 	int len;
 	const char *bytes = Tcl_GetStringFromObj(leadingWord, &len);
 
 	if (len == 11 && !strncmp("-nocomplain", bytes, 11)) {
 	    flags = 0;
 	    varTokenPtr = TokenAfter(varTokenPtr);
-	    numWords--;
+	    i++;
 	} else if (len == 2 && !strncmp("--", bytes, 2)) {
 	    varTokenPtr = TokenAfter(varTokenPtr);
-	    numWords--;
+	    i++;
 	}
     } else {
 	/*
@@ -2846,7 +2846,7 @@ TclCompileUnsetCmd(
     }
     TclDecrRefCount(leadingWord);
 
-    for (i=0 ; i<numWords ; i++) {
+    for ( ; i<parsePtr->numWords ; i++) {
 	/*
 	 * Decide if we can use a frame slot for the var/array name or if we
 	 * need to emit code to compute and push the name at runtime. We use a
@@ -2856,7 +2856,7 @@ TclCompileUnsetCmd(
 	 */
 
 	PushVarNameWord(interp, varTokenPtr, envPtr, 0,
-		&localIndex, &isScalar, 1);
+		&localIndex, &isScalar, i);
 
 	/*
 	 * Emit instructions to unset the variable.
diff --git a/tests/var.test b/tests/var.test
index 5939100..6d4be26 100644
--- a/tests/var.test
+++ b/tests/var.test
@@ -862,6 +862,19 @@ test var-20.8 {array set compilation correctness: Bug 3603163} -setup {
     }}
     array size x
 } -result 0
+
+test var-21.0 {PushVarNameWord OBOE in compiled unset} -setup {
+    proc linenumber {} {dict get [info frame -1] line}
+} -body {
+    apply {n {
+	set foo bar
+        unset foo {*}{
+        } [return [incr n -[linenumber]]]
+    }} [linenumber]
+} -cleanup {
+    rename linenumber {}
+} -result 1
+
 
 catch {namespace delete ns}
 catch {unset arr}