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gunicode.h: fix warning with -Wcast-qual for define g_utf8_next_char()

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The define for g_utf8_next_char(p) includes a not needed final cast to
(char *). In fact, this cast has the adverse effect of causing a warning
if p is a (const char *) with gcc/clang compiler option -Wcast-qual.
So lets remove the not needed cast and add option -Werror=cast-qual
to glib/tests/utf8-pointer.c which uses g_utf8_next_char().
Now utf8-pointer.c compiles also with compiler option -Werror=cast-qual
and passes all tests.
This commit is contained in:
Hannes Müller 2024-04-19 18:36:23 +02:00
parent 81eaabb308
commit c583162cc6
2 changed files with 4 additions and 2 deletions
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2
glib/gunicode.h
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@ -806,7 +806,7 @@ GLIB_VAR const gchar * const g_utf8_skip;
* Before using this macro, use g_utf8_validate() to validate strings
* that may contain invalid UTF-8.
*/
#define g_utf8_next_char(p) (char *)((p) + g_utf8_skip[*(const guchar *)(p)])
#define g_utf8_next_char(p) ((p) + g_utf8_skip[*(const guchar *)(p)])
GLIB_AVAILABLE_IN_ALL
gunichar g_utf8_get_char (const gchar *p) G_GNUC_PURE;

4
glib/tests/meson.build
View File

@ -169,7 +169,9 @@ glib_tests = {
'tree' : {},
'types' : {},
'utf8-performance' : {},
'utf8-pointer' : {},
'utf8-pointer' : {
'c_args' : cc.get_id() == 'gcc' ? ['-Werror=cast-qual'] : [],
},
'utf8-validate' : {},
'utf8-misc' : {},
'utils' : {