string-buffer: Fixes.

* modules/string-buffer (License): Change to LGPL.
* tests/test-string-buffer.c (main): Add another sb_appendf call, that
is more likely to fail.

ChangeLog

@@ -1,3 +1,10 @@
+2021-02-27  Bruno Haible  <bruno@clisp.org>
+
+	string-buffer: Fixes.
+	* modules/string-buffer (License): Change to LGPL.
+	* tests/test-string-buffer.c (main): Add another sb_appendf call, that
+	is more likely to fail.
+
 2021-02-25  Bernhard Voelker  <mail@bernhard-voelker.de>
 
 	gitlog-to-changelog: output SHA in "empty commit message" warning

modules/string-buffer

@@ -20,7 +20,7 @@ Include:
 "string-buffer.h"
 
 License:
-LGPLv2+
+LGPL
 
 Maintainer:
 all

tests/test-string-buffer.c

@@ -90,12 +90,19 @@ main ()
     free (s);
   }
 
-  /* Test printf-like formatting failure.  */
+  /* Test printf-like formatting failure.
+     On all systems except AIX, trying to convert the wide-character 0x76543210
+     to a multibyte string (in the "C" locale) fails.
+     On all systems where REPLACE_VSNPRINTF=1 (this includes AIX), i.e. where
+     the Gnulib implementation of vsnprintf() is used), invalid format
+     directives make the *printf call fail.  */
   {
     struct string_buffer buffer;
 
     sb_init (&buffer);
     sb_append (&buffer, "<");
+    sb_appendf (&buffer, "%lc", 0x76543210);
+    sb_append (&buffer, "|");
     sb_appendf (&buffer, invalid_format_string_1, 1);
     sb_append (&buffer, "|");
     sb_appendf (&buffer, invalid_format_string_2, 2);