Add G_GNUC_CONST and G_GNUC_PURE annotations.

2007-06-11  Behdad Esfahbod  <behdad@gnome.org>

        * pango/pango-attributes.h:
        * pango/pango-font.h:
        * pango/pango-glyph.h:
        * pango/pango-gravity.h:
        * pango/pango-language.h:
        * pango/pango-layout.h:
        * pango/pango-matrix.h:
        * pango/pango-ot-private.h:
        * pango/pango-ot.h:
        * pango/pango-renderer.h:
        * pango/pango-script.h:
        * pango/pango-tabs.h:
        * pango/pango-utils.h:
        * pango/pangoatsui-private.h:
        * pango/pangocairo-atsui.h:
        * pango/pangocairo-atsuifont.h:
        * pango/pangocairo-fc.h:
        * pango/pangocairo-private.h:
        * pango/pangocairo-win32.h:
        * pango/pangocairo.h:
        * pango/pangofc-decoder.h:
        * pango/pangofc-font.h:
        * pango/pangofc-fontmap.h:
        * pango/pangoft2-private.h:
        * pango/pangoft2.h:
        * pango/pangowin32-private.h:
        * pango/pangox-private.h:
        * pango/pangoxft-render.h:
        * pango/pangoxft.h:
        Add G_GNUC_CONST and G_GNUC_PURE annotations.


svn path=/trunk/; revision=2345

30 files changed, 81 insertions, 80 deletions

diff --git a/pango/pango-attributes.h b/pango/pango-attributes.h
index 50c7dd24..98ee9868 100644
--- a/pango/pango-attributes.h
+++ b/pango/pango-attributes.h
@@ -181,7 +181,7 @@ PangoAttrType    pango_attr_type_register (const gchar          *name);
 PangoAttribute * pango_attribute_copy          (const PangoAttribute *attr);
 void             pango_attribute_destroy       (PangoAttribute       *attr);
 gboolean         pango_attribute_equal         (const PangoAttribute *attr1,
-						const PangoAttribute *attr2);
+						const PangoAttribute *attr2) G_GNUC_PURE;
 
 PangoAttribute *pango_attr_language_new      (PangoLanguage              *language);
 PangoAttribute *pango_attr_family_new        (const char                 *family);
diff --git a/pango/pango-font.h b/pango/pango-font.h
index 79758ae4..0411fb02 100644
--- a/pango/pango-font.h
+++ b/pango/pango-font.h
@@ -98,13 +98,13 @@ typedef enum {
 
 #define PANGO_TYPE_FONT_DESCRIPTION (pango_font_description_get_type ())
 
-GType                 pango_font_description_get_type    (void);
+GType                 pango_font_description_get_type    (void) G_GNUC_CONST;
 PangoFontDescription *pango_font_description_new         (void);
 PangoFontDescription *pango_font_description_copy        (const PangoFontDescription  *desc);
 PangoFontDescription *pango_font_description_copy_static (const PangoFontDescription  *desc);
-guint                 pango_font_description_hash        (const PangoFontDescription  *desc);
+guint                 pango_font_description_hash        (const PangoFontDescription  *desc) G_GNUC_PURE;
 gboolean              pango_font_description_equal       (const PangoFontDescription  *desc1,
-							  const PangoFontDescription  *desc2);
+							  const PangoFontDescription  *desc2) G_GNUC_PURE;
 void                  pango_font_description_free        (PangoFontDescription        *desc);
 void                  pango_font_descriptions_free       (PangoFontDescription       **descs,
 							  int                          n_descs);
@@ -113,30 +113,30 @@ void                 pango_font_description_set_family        (PangoFontDescript
 							       const char           *family);
 void                 pango_font_description_set_family_static (PangoFontDescription *desc,
 							       const char           *family);
-G_CONST_RETURN char *pango_font_description_get_family        (const PangoFontDescription *desc);
+G_CONST_RETURN char *pango_font_description_get_family        (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_style         (PangoFontDescription *desc,
 							       PangoStyle            style);
-PangoStyle           pango_font_description_get_style         (const PangoFontDescription *desc);
+PangoStyle           pango_font_description_get_style         (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_variant       (PangoFontDescription *desc,
 							       PangoVariant          variant);
-PangoVariant         pango_font_description_get_variant       (const PangoFontDescription *desc);
+PangoVariant         pango_font_description_get_variant       (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_weight        (PangoFontDescription *desc,
 							       PangoWeight           weight);
-PangoWeight          pango_font_description_get_weight        (const PangoFontDescription *desc);
+PangoWeight          pango_font_description_get_weight        (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_stretch       (PangoFontDescription *desc,
 							       PangoStretch          stretch);
-PangoStretch         pango_font_description_get_stretch       (const PangoFontDescription *desc);
+PangoStretch         pango_font_description_get_stretch       (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_size          (PangoFontDescription *desc,
 							       gint                  size);
-gint                 pango_font_description_get_size          (const PangoFontDescription *desc);
+gint                 pango_font_description_get_size          (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_absolute_size (PangoFontDescription *desc,
 							       double                size);
-gboolean             pango_font_description_get_size_is_absolute (const PangoFontDescription *desc);
+gboolean             pango_font_description_get_size_is_absolute (const PangoFontDescription *desc) G_GNUC_PURE;
 void                 pango_font_description_set_gravity       (PangoFontDescription *desc,
 							       PangoGravity          gravity);
-PangoGravity         pango_font_description_get_gravity       (const PangoFontDescription *desc);
+PangoGravity         pango_font_description_get_gravity       (const PangoFontDescription *desc) G_GNUC_PURE;
 
-PangoFontMask pango_font_description_get_set_fields (const PangoFontDescription *desc);
+PangoFontMask pango_font_description_get_set_fields (const PangoFontDescription *desc) G_GNUC_PURE;
 void          pango_font_description_unset_fields   (PangoFontDescription       *desc,
 						     PangoFontMask               to_unset);
 
@@ -149,7 +149,7 @@ void pango_font_description_merge_static (PangoFontDescription       *desc,
 
 gboolean pango_font_description_better_match (const PangoFontDescription *desc,
 					      const PangoFontDescription *old_match,
-					      const PangoFontDescription *new_match);
+					      const PangoFontDescription *new_match) G_GNUC_PURE;
 
 PangoFontDescription *pango_font_description_from_string (const char                  *str);
 char *                pango_font_description_to_string   (const PangoFontDescription  *desc);
@@ -160,17 +160,17 @@ char *                pango_font_description_to_filename (const PangoFontDescrip
  */
 
 #define PANGO_TYPE_FONT_METRICS  (pango_font_metrics_get_type ())
-GType             pango_font_metrics_get_type                    (void);
+GType             pango_font_metrics_get_type                    (void) G_GNUC_CONST;
 PangoFontMetrics *pango_font_metrics_ref                         (PangoFontMetrics *metrics);
 void              pango_font_metrics_unref                       (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_ascent                  (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_descent                 (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_approximate_char_width  (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_approximate_digit_width (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_underline_position      (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_underline_thickness     (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_strikethrough_position  (PangoFontMetrics *metrics);
-int               pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics);
+int               pango_font_metrics_get_ascent                  (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_descent                 (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_approximate_char_width  (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_approximate_digit_width (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_underline_position      (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_underline_thickness     (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_strikethrough_position  (PangoFontMetrics *metrics) G_GNUC_PURE;
+int               pango_font_metrics_get_strikethrough_thickness (PangoFontMetrics *metrics) G_GNUC_PURE;
 
 #ifdef PANGO_ENABLE_BACKEND
 
@@ -208,8 +208,8 @@ GType      pango_font_family_get_type       (void) G_GNUC_CONST;
 void                 pango_font_family_list_faces (PangoFontFamily  *family,
 						   PangoFontFace  ***faces,
 						   int              *n_faces);
-G_CONST_RETURN char *pango_font_family_get_name   (PangoFontFamily  *family);
-gboolean   pango_font_family_is_monospace         (PangoFontFamily  *family);
+G_CONST_RETURN char *pango_font_family_get_name   (PangoFontFamily  *family) G_GNUC_PURE;
+gboolean   pango_font_family_is_monospace         (PangoFontFamily  *family) G_GNUC_PURE;
 
 #ifdef PANGO_ENABLE_BACKEND
 
@@ -257,11 +257,11 @@ struct _PangoFontFamilyClass
 GType      pango_font_face_get_type       (void) G_GNUC_CONST;
 
 PangoFontDescription *pango_font_face_describe       (PangoFontFace  *face);
-G_CONST_RETURN char  *pango_font_face_get_face_name  (PangoFontFace  *face);
+G_CONST_RETURN char  *pango_font_face_get_face_name  (PangoFontFace  *face) G_GNUC_PURE;
 void                  pango_font_face_list_sizes     (PangoFontFace  *face,
 						      int           **sizes,
 						      int            *n_sizes);
-gboolean              pango_font_face_is_synthesized (PangoFontFace  *face);
+gboolean              pango_font_face_is_synthesized (PangoFontFace  *face) G_GNUC_PURE;
 
 #ifdef PANGO_ENABLE_BACKEND
 
diff --git a/pango/pango-glyph.h b/pango/pango-glyph.h
index 3fb6d94e..cd26f53c 100644
--- a/pango/pango-glyph.h
+++ b/pango/pango-glyph.h
@@ -84,14 +84,14 @@ struct _PangoGlyphString {
 PangoGlyphString *pango_glyph_string_new      (void);
 void              pango_glyph_string_set_size (PangoGlyphString *string,
 					       gint              new_len);
-GType             pango_glyph_string_get_type (void);
+GType             pango_glyph_string_get_type (void) G_GNUC_CONST;
 PangoGlyphString *pango_glyph_string_copy     (PangoGlyphString *string);
 void              pango_glyph_string_free     (PangoGlyphString *string);
 void              pango_glyph_string_extents  (PangoGlyphString *glyphs,
 					       PangoFont        *font,
 					       PangoRectangle   *ink_rect,
 					       PangoRectangle   *logical_rect);
-int               pango_glyph_string_get_width(PangoGlyphString *glyphs);
+int               pango_glyph_string_get_width(PangoGlyphString *glyphs) G_GNUC_PURE;
 
 void              pango_glyph_string_extents_range  (PangoGlyphString *glyphs,
 						     int               start,
diff --git a/pango/pango-gravity.h b/pango/pango-gravity.h
index cee1ab03..2e42ebd8 100644
--- a/pango/pango-gravity.h
+++ b/pango/pango-gravity.h
@@ -98,7 +98,7 @@ typedef enum {
 #include <pango/pango-script.h>
 
 double       pango_gravity_to_rotation    (PangoGravity       gravity) G_GNUC_CONST;
-PangoGravity pango_gravity_get_for_matrix (const PangoMatrix *matrix);
+PangoGravity pango_gravity_get_for_matrix (const PangoMatrix *matrix) G_GNUC_PURE;
 PangoGravity pango_gravity_get_for_script (PangoScript        script,
 					   PangoGravity       base_gravity,
 					   PangoGravityHint   hint) G_GNUC_CONST;
diff --git a/pango/pango-language.c b/pango/pango-language.c
index a74f666d..61124bd0 100644
--- a/pango/pango-language.c
+++ b/pango/pango-language.c
@@ -193,13 +193,14 @@ _pango_get_lc_ctype (void)
 PangoLanguage *
 pango_language_get_default (void)
 {
-  gchar *lang;
-  PangoLanguage *result;
-
-  lang = _pango_get_lc_ctype ();
+  static PangoLanguage *result = NULL;
 
-  result = pango_language_from_string (lang);
-  g_free (lang);
+  if (G_UNLIKELY (!result))
+    {
+      gchar *lang = _pango_get_lc_ctype ();
+      result = pango_language_from_string (lang);
+      g_free (lang);
+    }
 
   return result;
 }
diff --git a/pango/pango-language.h b/pango/pango-language.h
index afd50452..9c1a9d8d 100644
--- a/pango/pango-language.h
+++ b/pango/pango-language.h
@@ -32,16 +32,16 @@ typedef struct _PangoLanguage PangoLanguage;
 
 #define PANGO_TYPE_LANGUAGE (pango_language_get_type ())
 
-GType          pango_language_get_type    (void);
+GType          pango_language_get_type    (void) G_GNUC_CONST;
 PangoLanguage *pango_language_from_string (const char *language);
 
 #define pango_language_to_string(language) ((const char *)language)
 
-G_CONST_RETURN char *pango_language_get_sample_string (PangoLanguage *language);
-PangoLanguage *pango_language_get_default (void);
+G_CONST_RETURN char *pango_language_get_sample_string (PangoLanguage *language) G_GNUC_CONST;
+PangoLanguage *pango_language_get_default (void) G_GNUC_CONST;
 
 gboolean      pango_language_matches  (PangoLanguage *language,
-				       const char *range_list);
+				       const char *range_list) G_GNUC_PURE;
 
 G_END_DECLS
 
diff --git a/pango/pango-layout.h b/pango/pango-layout.h
index ff8389eb..d84b1f79 100644
--- a/pango/pango-layout.h
+++ b/pango/pango-layout.h
@@ -241,7 +241,7 @@ typedef struct _PangoLayoutIter PangoLayoutIter;
 
 #define PANGO_TYPE_LAYOUT_ITER         (pango_layout_iter_get_type ())
 
-GType            pango_layout_iter_get_type (void);
+GType            pango_layout_iter_get_type (void) G_GNUC_CONST;
 
 PangoLayoutIter *pango_layout_get_iter  (PangoLayout     *layout);
 void             pango_layout_iter_free (PangoLayoutIter *iter);
diff --git a/pango/pango-matrix.h b/pango/pango-matrix.h
index 3ad5e9ff..5909367d 100644
--- a/pango/pango-matrix.h
+++ b/pango/pango-matrix.h
@@ -84,7 +84,7 @@ struct _PangoMatrix
 /* for PangoRectangle */
 #include <pango/pango-types.h>
 
-GType pango_matrix_get_type (void);
+GType pango_matrix_get_type (void) G_GNUC_CONST;
 
 PangoMatrix *pango_matrix_copy   (const PangoMatrix *matrix);
 void         pango_matrix_free   (PangoMatrix *matrix);
@@ -109,7 +109,7 @@ void pango_matrix_transform_rectangle (const PangoMatrix *matrix,
 				       PangoRectangle    *rect);
 void pango_matrix_transform_pixel_rectangle (const PangoMatrix *matrix,
 					     PangoRectangle    *rect);
-double pango_matrix_get_font_scale_factor (const PangoMatrix *matrix);
+double pango_matrix_get_font_scale_factor (const PangoMatrix *matrix) G_GNUC_PURE;
 
 
 G_END_DECLS
diff --git a/pango/pango-ot-private.h b/pango/pango-ot-private.h
index 3705ae8e..88875e74 100644
--- a/pango/pango-ot-private.h
+++ b/pango/pango-ot-private.h
@@ -92,13 +92,13 @@ struct _PangoOTBuffer
   guint applied_gpos : 1;
 };
 
-GType pango_ot_info_get_type (void);
+GType pango_ot_info_get_type (void) G_GNUC_CONST;
 
 HB_GDEF pango_ot_info_get_gdef (PangoOTInfo *info);
 HB_GSUB pango_ot_info_get_gsub (PangoOTInfo *info);
 HB_GPOS pango_ot_info_get_gpos (PangoOTInfo *info);
 
-GType pango_ot_ruleset_get_type (void);
+GType pango_ot_ruleset_get_type (void) G_GNUC_CONST;
 
 G_END_DECLS
 
diff --git a/pango/pango-ot.h b/pango/pango-ot.h
index 52cc30f0..1b3b8b7e 100644
--- a/pango/pango-ot.h
+++ b/pango/pango-ot.h
@@ -166,14 +166,14 @@ void            pango_ot_ruleset_substitute  (const PangoOTRuleset   *ruleset,
 					      PangoOTBuffer          *buffer);
 void            pango_ot_ruleset_position    (const PangoOTRuleset   *ruleset,
 					      PangoOTBuffer          *buffer);
-PangoScript     pango_ot_tag_to_script     (PangoOTTag     script_tag);
-PangoOTTag      pango_ot_tag_from_script   (PangoScript    script);
-PangoLanguage*  pango_ot_tag_to_language   (PangoOTTag     language_tag);
-PangoOTTag      pango_ot_tag_from_language (PangoLanguage *language);
+PangoScript     pango_ot_tag_to_script     (PangoOTTag     script_tag) G_GNUC_CONST;
+PangoOTTag      pango_ot_tag_from_script   (PangoScript    script) G_GNUC_CONST;
+PangoLanguage  *pango_ot_tag_to_language   (PangoOTTag     language_tag) G_GNUC_CONST;
+PangoOTTag      pango_ot_tag_from_language (PangoLanguage *language) G_GNUC_CONST;
 
-guint           pango_ot_ruleset_description_hash  (const PangoOTRulesetDescription *desc);
+guint           pango_ot_ruleset_description_hash  (const PangoOTRulesetDescription *desc) G_GNUC_PURE;
 gboolean        pango_ot_ruleset_description_equal (const PangoOTRulesetDescription *desc1,
-						    const PangoOTRulesetDescription *desc2);
+						    const PangoOTRulesetDescription *desc2) G_GNUC_PURE;
 PangoOTRulesetDescription *pango_ot_ruleset_description_copy  (const PangoOTRulesetDescription *desc);
 void            pango_ot_ruleset_description_free  (PangoOTRulesetDescription       *desc);
 
diff --git a/pango/pango-renderer.h b/pango/pango-renderer.h
index 211ae283..47fbb017 100644
--- a/pango/pango-renderer.h
+++ b/pango/pango-renderer.h
@@ -181,7 +181,7 @@ struct _PangoRendererClass
   void (*_pango_reserved4) (void);
 };
 
-GType pango_renderer_get_type    (void);
+GType pango_renderer_get_type    (void) G_GNUC_CONST;
 
 void pango_renderer_draw_layout          (PangoRenderer    *renderer,
 					  PangoLayout      *layout,
diff --git a/pango/pango-script.h b/pango/pango-script.h
index 7068b55c..6aa2a937 100644
--- a/pango/pango-script.h
+++ b/pango/pango-script.h
@@ -124,9 +124,9 @@ void             pango_script_iter_get_range (PangoScriptIter      *iter,
 gboolean         pango_script_iter_next      (PangoScriptIter      *iter);
 void             pango_script_iter_free      (PangoScriptIter      *iter);
 
-PangoLanguage *pango_script_get_sample_language (PangoScript    script);
+PangoLanguage *pango_script_get_sample_language (PangoScript    script) G_GNUC_PURE;
 gboolean       pango_language_includes_script   (PangoLanguage *language,
-						 PangoScript    script);
+						 PangoScript    script) G_GNUC_PURE;
 
 G_END_DECLS
 
diff --git a/pango/pango-tabs.h b/pango/pango-tabs.h
index 160fff73..7f52d1d0 100644
--- a/pango/pango-tabs.h
+++ b/pango/pango-tabs.h
@@ -50,7 +50,7 @@ PangoTabArray  *pango_tab_array_new_with_positions  (gint           size,
 						     PangoTabAlign  first_alignment,
 						     gint           first_position,
 						     ...);
-GType           pango_tab_array_get_type            (void);
+GType           pango_tab_array_get_type            (void) G_GNUC_CONST;
 PangoTabArray  *pango_tab_array_copy                (PangoTabArray *src);
 void            pango_tab_array_free                (PangoTabArray *tab_array);
 gint            pango_tab_array_get_size            (PangoTabArray *tab_array);
diff --git a/pango/pango-utils.h b/pango/pango-utils.h
index f44f2b55..41a8bbb0 100644
--- a/pango/pango-utils.h
+++ b/pango/pango-utils.h
@@ -82,13 +82,13 @@ gboolean pango_parse_stretch (const char   *str,
  * stored in the registry). The returned string should not be
  * g_free'd.
  */
-G_CONST_RETURN char *   pango_get_sysconf_subdirectory (void);
+G_CONST_RETURN char *   pango_get_sysconf_subdirectory (void) G_GNUC_PURE;
 
 /* Ditto for LIBDIR/pango. On Win32, use the same Pango
  * installation directory. This returned string should not be
  * g_free'd either.
  */
-G_CONST_RETURN char *   pango_get_lib_subdirectory (void);
+G_CONST_RETURN char *   pango_get_lib_subdirectory (void) G_GNUC_PURE;
 
 #endif /* PANGO_ENABLE_BACKEND */
 
@@ -131,12 +131,12 @@ gboolean pango_is_zero_width (gunichar ch) G_GNUC_CONST;
 int pango_version (void) G_GNUC_CONST;
 
 /* Return run-time Pango version as an string */
-G_CONST_RETURN char * pango_version_string (void);
+G_CONST_RETURN char * pango_version_string (void) G_GNUC_CONST;
 
 /* Check that run-time Pango is as new as required */
 G_CONST_RETURN char * pango_version_check (int required_major,
 					   int required_minor,
-					   int required_micro);
+					   int required_micro) G_GNUC_CONST;
 
 G_END_DECLS
 
diff --git a/pango/pangoatsui-private.h b/pango/pangoatsui-private.h
index d63600d6..d0a1ebff 100644
--- a/pango/pangoatsui-private.h
+++ b/pango/pangoatsui-private.h
@@ -100,8 +100,8 @@ struct _PangoATSUIFontClass
   PangoFontClass parent_class;
 };
 
-GType pango_atsui_font_map_get_type (void);
-GType pango_atsui_font_get_type (void);
+GType pango_atsui_font_map_get_type (void) G_GNUC_CONST;
+GType pango_atsui_font_get_type (void) G_GNUC_CONST;
 
 const char *   _pango_atsui_face_get_postscript_name  (PangoATSUIFace *face);
 PangoCoverage *_pango_atsui_face_get_coverage         (PangoATSUIFace *face,
diff --git a/pango/pangocairo-atsui.h b/pango/pangocairo-atsui.h
index 2d655aa2..25613a01 100644
--- a/pango/pangocairo-atsui.h
+++ b/pango/pangocairo-atsui.h
@@ -43,7 +43,7 @@ struct _PangoCairoATSUIFontMap
   gdouble dpi;
 };
 
-GType pango_cairo_atsui_font_map_get_type (void);
+GType pango_cairo_atsui_font_map_get_type (void) G_GNUC_CONST;
 
 PangoATSUIFont *
 _pango_cairo_atsui_font_new (PangoCairoATSUIFontMap     *cafontmap,
diff --git a/pango/pangocairo-atsuifont.h b/pango/pangocairo-atsuifont.h
index 94bf92ab..a0f36b3f 100644
--- a/pango/pangocairo-atsuifont.h
+++ b/pango/pangocairo-atsuifont.h
@@ -31,7 +31,7 @@
 typedef struct _PangoCairoATSUIFont      PangoCairoATSUIFont;
 typedef struct _PangoCairoATSUIFontClass PangoCairoATSUIFontClass;
 
-GType pango_cairo_atsui_font_get_type (void);
+GType pango_cairo_atsui_font_get_type (void) G_GNUC_CONST;
 
 ATSUFontID pango_cairo_atsui_font_get_atsu_font_id (PangoCairoATSUIFont *cafont);
 
diff --git a/pango/pangocairo-fc.h b/pango/pangocairo-fc.h
index 5f9f8c04..82a6b7ec 100644
--- a/pango/pangocairo-fc.h
+++ b/pango/pangocairo-fc.h
@@ -43,7 +43,7 @@ struct _PangoCairoFcFontMap
   PangoRenderer *renderer;
 };
 
-GType pango_cairo_fc_font_map_get_type (void);
+GType pango_cairo_fc_font_map_get_type (void) G_GNUC_CONST;
 
 PangoFcFont *_pango_cairo_fc_font_new (PangoCairoFcFontMap        *cffontmap,
 				       PangoContext               *context,
diff --git a/pango/pangocairo-private.h b/pango/pangocairo-private.h
index 1fb100a2..9ead7fce 100644
--- a/pango/pangocairo-private.h
+++ b/pango/pangocairo-private.h
@@ -106,7 +106,7 @@ struct _PangoCairoFontIface
   gssize cf_priv_offset;
 };
 
-GType pango_cairo_font_get_type (void);
+GType pango_cairo_font_get_type (void) G_GNUC_CONST;
 
 gboolean _pango_cairo_font_install (PangoFont *font,
 				    cairo_t   *cr);
@@ -133,7 +133,7 @@ void _pango_cairo_font_private_get_glyph_extents (PangoCairoFontPrivate *cf_priv
 
 typedef struct _PangoCairoRenderer PangoCairoRenderer;
 
-GType pango_cairo_renderer_get_type    (void);
+GType pango_cairo_renderer_get_type    (void) G_GNUC_CONST;
 
 
 const cairo_font_options_t *_pango_cairo_context_get_merged_font_options (PangoContext *context);
diff --git a/pango/pangocairo-win32.h b/pango/pangocairo-win32.h
index 4c0fce73..f95f4fb9 100644
--- a/pango/pangocairo-win32.h
+++ b/pango/pangocairo-win32.h
@@ -43,7 +43,7 @@ struct _PangoCairoWin32FontMap
   PangoRenderer *renderer;
 };
 
-GType pango_cairo_win32_font_map_get_type (void);
+GType pango_cairo_win32_font_map_get_type (void) G_GNUC_CONST;
 
 PangoFont *_pango_cairo_win32_font_new (PangoCairoWin32FontMap       *cwfontmap,
 					PangoContext                 *context,
diff --git a/pango/pangocairo.h b/pango/pangocairo.h
index 2e75b28d..4aa27d8a 100644
--- a/pango/pangocairo.h
+++ b/pango/pangocairo.h
@@ -52,7 +52,7 @@ typedef void (* PangoCairoShapeRendererFunc) (cairo_t        *cr,
 /*
  * PangoCairoFontMap
  */
-GType         pango_cairo_font_map_get_type          (void);
+GType         pango_cairo_font_map_get_type          (void) G_GNUC_CONST;
 
 PangoFontMap *pango_cairo_font_map_new               (void);
 PangoFontMap *pango_cairo_font_map_new_for_font_type (cairo_font_type_t fonttype);
diff --git a/pango/pangofc-decoder.h b/pango/pangofc-decoder.h
index eccdc6ea..8e341469 100644
--- a/pango/pangofc-decoder.h
+++ b/pango/pangofc-decoder.h
@@ -95,7 +95,7 @@ struct _PangoFcDecoderClass
   void (*_pango_reserved4) (void);
 };
 
-GType      pango_fc_decoder_get_type    (void);
+GType      pango_fc_decoder_get_type    (void) G_GNUC_CONST;
 
 FcCharSet *pango_fc_decoder_get_charset (PangoFcDecoder *decoder,
 					 PangoFcFont    *fcfont);
diff --git a/pango/pangofc-font.h b/pango/pangofc-font.h
index 3a6eb40d..ae16b168 100644
--- a/pango/pangofc-font.h
+++ b/pango/pangofc-font.h
@@ -142,7 +142,7 @@ void       pango_fc_font_kern_glyphs       (PangoFcFont      *font,
 
 #endif /* PANGO_ENABLE_ENGINE || PANGO_ENABLE_BACKEND */
 
-GType      pango_fc_font_get_type (void);
+GType      pango_fc_font_get_type (void) G_GNUC_CONST;
 
 FT_Face    pango_fc_font_lock_face         (PangoFcFont      *font);
 void       pango_fc_font_unlock_face       (PangoFcFont      *font);
diff --git a/pango/pangofc-fontmap.h b/pango/pangofc-fontmap.h
index 50c59887..5eaf9cc9 100644
--- a/pango/pangofc-fontmap.h
+++ b/pango/pangofc-fontmap.h
@@ -149,7 +149,7 @@ void           pango_fc_font_map_shutdown       (PangoFcFontMap *fcfontmap);
 
 #endif
 
-GType pango_fc_font_map_get_type (void);
+GType pango_fc_font_map_get_type (void) G_GNUC_CONST;
 
 /**
  * PangoFcDecoderFindFunc:
diff --git a/pango/pangoft2-private.h b/pango/pangoft2-private.h
index 60b9c684..8388ec9f 100644
--- a/pango/pangoft2-private.h
+++ b/pango/pangoft2-private.h
@@ -77,7 +77,7 @@ struct _PangoFT2GlyphInfo
 #define PANGO_FT2_FONT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FT2_FONT, PangoFT2Font))
 #define PANGO_FT2_IS_FONT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FT2_FONT))
 
-GType pango_ft2_font_get_type (void);
+GType pango_ft2_font_get_type (void) G_GNUC_CONST;
 
 PangoFT2Font * _pango_ft2_font_new                (PangoFT2FontMap   *ft2fontmap,
 						   FcPattern         *pattern);
@@ -111,7 +111,7 @@ void _pango_ft2_draw_error_underline (FT_Bitmap         *bitmap,
 #define PANGO_FT2_RENDERER(object)         (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FT2_RENDERER, PangoFT2Renderer))
 #define PANGO_IS_FT2_RENDERER(object)      (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FT2_RENDERER))
 
-GType pango_ft2_renderer_get_type    (void);
+GType pango_ft2_renderer_get_type    (void) G_GNUC_CONST;
 
 PangoRenderer *_pango_ft2_font_map_get_renderer (PangoFT2FontMap *ft2fontmap);
 
diff --git a/pango/pangoft2.h b/pango/pangoft2.h
index cd285afa..27acfa6e 100644
--- a/pango/pangoft2.h
+++ b/pango/pangoft2.h
@@ -74,7 +74,7 @@ void pango_ft2_render_layout_subpixel      (FT_Bitmap        *bitmap,
 					    int               x,
 					    int               y);
 
-GType pango_ft2_font_map_get_type (void);
+GType pango_ft2_font_map_get_type (void) G_GNUC_CONST;
 
 PangoFontMap *pango_ft2_font_map_new                    (void);
 void          pango_ft2_font_map_set_resolution         (PangoFT2FontMap        *fontmap,
diff --git a/pango/pangowin32-private.h b/pango/pangowin32-private.h
index 18fac0b6..8d44dafb 100644
--- a/pango/pangowin32-private.h
+++ b/pango/pangowin32-private.h
@@ -256,14 +256,14 @@ struct name_record
   guint16 string_offset;
 };
 
-GType           _pango_win32_font_get_type          (void);
+GType           _pango_win32_font_get_type          (void) G_GNUC_CONST;
 
 void            _pango_win32_make_matching_logfontw (PangoFontMap   *fontmap,
 						     const LOGFONTW *lfp,
 						     int             size,
 						     LOGFONTW       *out);
 
-GType           _pango_win32_font_map_get_type      (void);
+GType           _pango_win32_font_map_get_type      (void) G_GNUC_CONST;
 
 void            _pango_win32_fontmap_cache_remove   (PangoFontMap   *fontmap,
 						     PangoWin32Font *xfont);
diff --git a/pango/pangox-private.h b/pango/pangox-private.h
index 4f4e909b..b3a9c8f3 100644
--- a/pango/pangox-private.h
+++ b/pango/pangox-private.h
@@ -92,7 +92,7 @@ struct _PangoXFontMap
   Window coverage_win;
 };
 
-GType    pango_x_font_map_get_type   (void);
+GType    pango_x_font_map_get_type   (void) G_GNUC_CONST;
 
 PangoXFont *   pango_x_font_new                (PangoFontMap    *fontmap,
 						const char      *spec,
diff --git a/pango/pangoxft-render.h b/pango/pangoxft-render.h
index 45bd672c..87c26a75 100644
--- a/pango/pangoxft-render.h
+++ b/pango/pangoxft-render.h
@@ -95,7 +95,7 @@ struct _PangoXftRendererClass
 				int               n_glyphs);
 };
 
-GType pango_xft_renderer_get_type    (void);
+GType pango_xft_renderer_get_type    (void) G_GNUC_CONST;
 
 PangoRenderer *pango_xft_renderer_new                 (Display          *display,
 						       int               screen);
diff --git a/pango/pangoxft.h b/pango/pangoxft.h
index bb856b18..a84571a8 100644
--- a/pango/pangoxft.h
+++ b/pango/pangoxft.h
@@ -63,13 +63,13 @@ void pango_xft_set_default_substitute (Display                *display,
 void pango_xft_substitute_changed     (Display                *display,
 				       int                     screen);
 
-GType pango_xft_font_map_get_type (void);
+GType pango_xft_font_map_get_type (void) G_GNUC_CONST;
 
 #define PANGO_XFT_FONT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_XFT_FONT, PangoXftFont))
 #define PANGO_TYPE_XFT_FONT              (pango_xft_font_get_type ())
 #define PANGO_XFT_IS_FONT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_XFT_FONT))
 
-GType      pango_xft_font_get_type (void);
+GType      pango_xft_font_get_type (void) G_GNUC_CONST;
 
 /* For shape engines
  */