Audit bb_common_bufsiz usage, add script which looks for misuse.

tr: stop using globals needlessly.
code: -103 bytes

2 files changed, 12 insertions, 11 deletions

diff --git a/editors/ed.c b/editors/ed.c
index 731aef1cb..e6576b406 100644
--- a/editors/ed.c
+++ b/editors/ed.c
@@ -9,9 +9,11 @@
 
 #include "libbb.h"
 
+#define searchString bb_common_bufsiz1
+
 enum {
-	USERSIZE = sizeof(bb_common_bufsiz1) > 1024 ? 1024
-	         : sizeof(bb_common_bufsiz1) - 1, /* max line length typed in by user */
+	USERSIZE = sizeof(searchString) > 1024 ? 1024
+	         : sizeof(searchString) - 1, /* max line length typed in by user */
 	INITBUF_SIZE = 1024, /* initial buffer size */
 };
 
@@ -22,8 +24,6 @@ typedef struct LINE {
 	char data[1];
 } LINE;
 
-#define searchString bb_common_bufsiz1
-
 static LINE lines, *curLine;
 static int curNum, lastNum, marks[26], dirty;
 static char *bufBase, *bufPtr, *fileName;
diff --git a/editors/sed.c b/editors/sed.c
index d49627ff4..d0c2ca742 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -118,8 +118,14 @@ struct globals {
 		int len;	/* Space allocated */
 	} pipeline;
 };
-
 #define G (*(struct globals*)&bb_common_bufsiz1)
+void BUG_sed_globals_too_big(void);
+#define INIT_G() do { \
+	if (sizeof(struct globals) > COMMON_BUFSIZE) \
+		BUG_sed_globals_too_big(); \
+	G.sed_cmd_tail = &G.sed_cmd_head; \
+} while (0)
+
 
 #if ENABLE_FEATURE_CLEAN_UP
 static void sed_free_and_close_stuff(void)
@@ -1210,8 +1216,6 @@ static void add_cmd_block(char *cmdstr)
 	free(sv);
 }
 
-void BUG_sed_globals_too_big(void);
-
 int sed_main(int argc, char **argv);
 int sed_main(int argc, char **argv)
 {
@@ -1222,10 +1226,7 @@ int sed_main(int argc, char **argv)
 	llist_t *opt_e, *opt_f;
 	int status = EXIT_SUCCESS;
 
-	if (sizeof(struct globals) > sizeof(bb_common_bufsiz1))
-		BUG_sed_globals_too_big();
-
-	G.sed_cmd_tail = &G.sed_cmd_head;
+	INIT_G();
 
 	/* destroy command strings on exit */
 	if (ENABLE_FEATURE_CLEAN_UP) atexit(sed_free_and_close_stuff);