Following up to previous commit's TODO.

* filter.c (struct filter_par): wchar_t becomes wchli_t.

* lib.h (wchli_t): New type: an incomplete structure type,
so that a pointer to this type is incompatible with anything else.
(wli): Macro produces const wchli_t * pointer instead of
const wchar_t *.
(auto_str, static_str): Accept a const wchli_t * instead
of const wchar_t *, making it impossible to misuse these
functions by passing in a literal.

* stream.c (string_out_put_char): These type changes showed
this hack to have a bug. Confronted with the need to cast
from const wchar_t * to const wchli_t *, it's obvious that
the conversion has to be done properly with the + 1 in the
one platform case, but not the other.

* txr.c (version): Type changed to const wchli_t.

* txr.h (version): Declaration updated.

6 files changed, 39 insertions, 12 deletions

diff --git a/ChangeLog b/ChangeLog
index 53cca13c..3f7588f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,29 @@
 2011-10-09  Kaz Kylheku  <kaz@kylheku.com>
 
+	Following up to previous commit's TODO.
+
+	* filter.c (struct filter_par): wchar_t becomes wchli_t.
+
+	* lib.h (wchli_t): New type: an incomplete structure type,
+	so that a pointer to this type is incompatible with anything else.
+	(wli): Macro produces const wchli_t * pointer instead of
+	const wchar_t *.
+	(auto_str, static_str): Accept a const wchli_t * instead
+	of const wchar_t *, making it impossible to misuse these
+	functions by passing in a literal.
+
+	* stream.c (string_out_put_char): These type changes showed
+	this hack to have a bug. Confronted with the need to cast
+	from const wchar_t * to const wchli_t *, it's obvious that
+	the conversion has to be done properly with the + 1 in the
+	one platform case, but not the other.
+
+	* txr.c (version): Type changed to const wchli_t.
+
+	* txr.h (version): Declaration updated.
+
+2011-10-09  Kaz Kylheku  <kaz@kylheku.com>
+
 	Ported to Cygwin.
 
 	TODO: there should be some type safety with the new wli macro
diff --git a/filter.c b/filter.c
index 776a9113..3d7050b7 100644
--- a/filter.c
+++ b/filter.c
@@ -128,7 +128,7 @@ val get_filter_trie(val sym)
 }
 
 struct filter_pair {
-  const wchar_t *key, *value;
+  const wchli_t *key, *value;
 };
 
 static val build_filter(struct filter_pair *pair, val compress_p)
diff --git a/lib.h b/lib.h
index 592e187b..26bd1003 100644
--- a/lib.h
+++ b/lib.h
@@ -188,27 +188,29 @@ INLINE type_t type(val obj)
   return tag(obj) ? (type_t) tag(obj) : obj->t.type;
 }
 
+typedef struct wli wchli_t;
+
 #if LIT_ALIGN < 4
-#define wli(lit) (L ## "\0" lit)
+#define wli(lit) ((const wchli_t *) L ## "\0" lit)
 #else
-#define wli(lit) (L ## lit)
+#define wli(lit) ((const wchli_t *) L ## lit)
 #endif
 
-INLINE val auto_str(const wchar_t *str)
+INLINE val auto_str(const wchli_t *str)
 {
 #if LIT_ALIGN < 4
-  return (val) ((cnum) (str + 1) | TAG_LIT);
+  return (val) (((cnum) str + 1) | TAG_LIT);
 #else
-  return (val) ((cnum) (str) | TAG_LIT);
+  return (val) (((cnum) str) | TAG_LIT);
 #endif
 }
 
-INLINE val static_str(const wchar_t *str)
+INLINE val static_str(const wchli_t *str)
 {
 #if LIT_ALIGN < 4
-  return (val) ((cnum) (str + 1) | TAG_LIT);
+  return (val) (((cnum) str + 1) | TAG_LIT);
 #else
-  return (val) ((cnum) (str) | TAG_LIT);
+  return (val) (((cnum) str) | TAG_LIT);
 #endif
 }
 
diff --git a/stream.c b/stream.c
index f15e7b2a..84d417a7 100644
--- a/stream.c
+++ b/stream.c
@@ -420,12 +420,13 @@ static val string_out_put_char(val stream, val ch)
   mini[0] = 0;
   mini[1] = c_chr(ch);
   mini[2] = 0;
+  return string_out_put_string(stream, auto_str((const wchli_t *) (mini + 1)));
 #else
   wchar_t mini[2];
   mini[0] = c_chr(ch);
   mini[1] = 0;
+  return string_out_put_string(stream, auto_str((const wchli_t *) mini));
 #endif
-  return string_out_put_string(stream, auto_str(mini));
 }
 
 static struct strm_ops string_out_ops = {
diff --git a/txr.c b/txr.c
index 1f0d7197..fa7cc8ee 100644
--- a/txr.c
+++ b/txr.c
@@ -43,7 +43,7 @@
 #include "utf8.h"
 #include "txr.h"
 
-const wchar_t *version = wli("038");
+const wchli_t *version = wli("038");
 const wchar_t *progname = L"txr";
 const wchar_t *spec_file = L"stdin";
 val spec_file_str;
diff --git a/txr.h b/txr.h
index e8e12a67..1b0f23f7 100644
--- a/txr.h
+++ b/txr.h
@@ -32,6 +32,6 @@ extern int opt_gc_debug;
 extern int opt_vg_debug;
 #endif
 extern int opt_derivative_regex;
-extern const wchar_t *version;
+extern const wchli_t *version;
 extern const wchar_t *progname;
 extern int output_produced;