Massive bug and memory leak fixing.

libs/gib/gib_execute.c

@@ -200,8 +200,16 @@ GIB_Execute (cbuf_t * cbuf)
 	unsigned int index;
 	gib_var_t *var;
 
+	if (!g->program)
+		return;
 	g->ip = g->ip ? g->ip->next : g->program;
 	while (g->ip) {
+		if (g->ip->flags & TREE_L_EMBED) {
+			// Get ready for return values
+			g->waitret = true;
+			GIB_Buffer_Push_Sstack (cbuf);
+		} else
+			g->waitret = false;
 		switch (g->ip->type) {
 			case TREE_T_JUMP:
 				g->ip = g->ip->jump;
@@ -231,12 +239,6 @@ GIB_Execute (cbuf_t * cbuf)
 				g->ip = g->ip->next;
 				continue;
 			case TREE_T_CMD:
-				if (g->ip->flags & TREE_L_EMBED) {
-					// Get ready for return values
-					g->waitret = true;
-					GIB_Buffer_Push_Sstack (cbuf);
-				} else
-					g->waitret = false;
 				if (GIB_Execute_Prepare_Line (cbuf, g->ip))
 					return;
 				else if (cbuf->args->argc) {
@@ -264,6 +266,6 @@ GIB_Execute (cbuf_t * cbuf)
 				return;
 		}
 	}
-	g->ip = g->program = 0;
-	g->script = 0;
+	g->ip = 0;
+	GIB_Tree_Unref (&g->program);
 }

libs/gib/gib_parse.c

@@ -299,6 +299,7 @@ GIB_Parse_Tokens (const char *program, unsigned int *i, unsigned int pofs, gib_t
 		cur->end = *i + pofs;
 		cur->delim = delim;
 		str = calloc (*i - tstart + 1, sizeof (char));
+		cur->str = str;
 		memcpy (str, program + tstart, *i - tstart);
 		if (cur->delim == '{') {
 			if (cat == CAT_CONCAT) {
@@ -344,7 +345,6 @@ GIB_Parse_Tokens (const char *program, unsigned int *i, unsigned int pofs, gib_t
 			// We can handle escape characters now
 		} else if (cur->delim == '\"')
 			GIB_Process_Escapes (str);
-		cur->str = str;
 
 		if (cat == CAT_CONCAT)
 			cur->flags |= TREE_A_CONCAT;
@@ -363,7 +363,9 @@ GIB_Parse_Tokens (const char *program, unsigned int *i, unsigned int pofs, gib_t
 	if (c)
 		GIB_Parse_Error (va ("Could not find match for '%c'.", c), *i + pofs);
 	if (nodes)
-		GIB_Tree_Free_Recursive (nodes);
+		GIB_Tree_Unref (&nodes);
+	if (embs)
+		GIB_Tree_Unref (&embs);
 	return 0;
 }
 
@@ -372,6 +374,9 @@ GIB_Parse_Semantic_Preprocess (gib_tree_t * line)
 {
 	gib_tree_t *p, *start = line;
 
+	// If second token is concatenated, than the first can't possibly mean anything
+	if (line->children->next && line->children->next->flags & TREE_A_CONCAT)
+		return line;
 	while (!strcmp (line->children->str, "if")
 		   || !strcmp (line->children->str, "ifnot")) {
 		// Sanity checking
@@ -542,8 +547,13 @@ GIB_Parse_Semantic_Preprocess (gib_tree_t * line)
 				p->jump = line;
 			p = p->next;
 		}
-	} else if (line->children->next && line->children->next->delim == ' ' && !strcmp (line->children->next->str, "="))
-		line->type = TREE_T_ASSIGN;
+	} else if (
+		line->children->next && 
+		!(line->children->next->flags & TREE_A_CONCAT) && 
+		line->children->next->delim == ' ' &&
+		!strcmp (line->children->next->str, "=")
+		)
+			line->type = TREE_T_ASSIGN;
 	return line;
 }
 
@@ -588,7 +598,7 @@ GIB_Parse_Lines (const char *program, unsigned int pofs)
 	return lines;
   ERROR:
 	if (lines)
-		GIB_Tree_Free_Recursive (lines);
+		GIB_Tree_Unref (&lines);
 	return 0;
 }
 
@@ -597,10 +607,11 @@ GIB_Parse_Embedded (const char *program, unsigned int pofs, gib_tree_t ** embedd
 {
 	unsigned int i, n, t;
 	char        c, d, *str;
-	gib_tree_t *lines = 0, **line = &lines, *cur, *tokens, *emb, *tmp;
+	gib_tree_t *lines = 0, **line = &lines, *cur, *tokens, *emb, *tmp, **embfirst;
 	unsigned int start, end;
 
 	gib_parse_error = false;
+	embfirst = embedded;
 	*embedded = 0;
 
 	for (i = 0; program[i]; i++) {
@@ -628,14 +639,16 @@ GIB_Parse_Embedded (const char *program, unsigned int pofs, gib_tree_t ** embedd
 			cur->end = end + pofs;
 			c = 0;
 			t = 0;
-			if (!
-				(tokens =
-				 GIB_Parse_Tokens (cur->str, &t, start + pofs, &emb)))
+			if (!(tokens = GIB_Parse_Tokens (cur->str, &t, start + pofs, &emb))) {
+				GIB_Tree_Unref (&cur);
 				goto ERROR;
+			}
 			cur->children = tokens;
 			GIB_Parse_Semantic_Preprocess (cur)->next = *embedded;
-			if (gib_parse_error)
+			if (gib_parse_error) {
+				GIB_Tree_Unref (&cur);
 				goto ERROR;
+			}
 			// Did this have embedded commands of it's own?
 			if (emb) {
 				// Link them in first
@@ -692,6 +705,8 @@ GIB_Parse_Embedded (const char *program, unsigned int pofs, gib_tree_t ** embedd
 	if (c)
 		GIB_Parse_Error (va ("Could not find match for '%c'.", c), i + pofs);
 	if (lines)
-		GIB_Tree_Free_Recursive (lines);
+		GIB_Tree_Unref (&lines);
+	if (*embfirst)
+		GIB_Tree_Unref (embfirst);
 	return 0;
 }

libs/gib/gib_process.c

@@ -95,7 +95,7 @@ GIB_Process_Embedded (gib_tree_t * node, cbuf_args_t * args)
 					Cbuf_ArgsAdd (args, retvals->dstrs[j]->str);
 					args->argm[args->argc - 1] = node;
 				}
-				if (str[prev] && retvals->size)	// Still more stuff left?
+				if (str[prev] || retvals->size)	// Still more stuff left?
 					Cbuf_ArgsAdd (args, "");
 			} else
 				dstring_appendstr (args->argv[args->argc - 1],

libs/util/cbuf.c

@@ -68,6 +68,7 @@ Cbuf_ArgsDelete (cbuf_args_t *args)
 		dstring_delete (args->argv[i]);
 	free (args->argv);
 	free (args->args);
+	free (args->argm);
 	free (args);
 }
 
@@ -201,7 +202,7 @@ Cbuf_Execute_Stack (cbuf_t *cbuf)
 		Cbuf_DeleteStack (cbuf->down);
 		cbuf->down = 0;
 	}
-	if (sp) // This should be null if we exited normally
+	if (sp)
 		Cbuf_Reset (cbuf);
 }
 

tools/carne/main.c

@@ -64,13 +64,14 @@ Carne_Execute_Script (const char *path, cbuf_args_t *args)
 		Qclose (file);
 	} else {
 		printf ("Could not open %s for reading: %s\n", path, strerror(errno));
-		return 1;
+		carne_exitcode = 1;
+		goto ERROR;
 	}
 	
-	if (gib_parse_error)
-		return 1;
-
-		
+	if (gib_parse_error) {
+		carne_exitcode = 2;
+		goto ERROR;
+	}	
 		
 	GIB_Function_Prepare_Args (mbuf, args->argv, args->argc);
 	
@@ -82,6 +83,7 @@ Carne_Execute_Script (const char *path, cbuf_args_t *args)
 		if (carne_done || !GIB_DATA(mbuf)->program)
 			break;
 	}
+ERROR:
 	Cbuf_DeleteStack (mbuf);
 	return carne_exitcode;
 }
@@ -109,7 +111,7 @@ Carne_Execute_Stdin (void)
 int
 main (int argc, char **argv)
 {
-	cbuf_args_t *args = Cbuf_ArgsNew ();
+	cbuf_args_t *args; 
 	int result, i;
 	
 	// Initialize required QF subsystems
@@ -122,6 +124,7 @@ main (int argc, char **argv)
 	
 	if (argc > 1) {
 		// Prepare arguments
+		args = Cbuf_ArgsNew ();
 		for (i = 1; i < argc; i++)
 			Cbuf_ArgsAdd (args, argv[i]);
 		// Run the script