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@@ -386,7 +386,7 @@ static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
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internal_function;
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#ifdef RE_ENABLE_I18N
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static void build_wcs_buffer (re_string_t *pstr) internal_function;
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-static int build_wcs_upper_buffer (re_string_t *pstr) internal_function;
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+static reg_errcode_t build_wcs_upper_buffer (re_string_t *pstr) internal_function;
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#endif /* RE_ENABLE_I18N */
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static void build_upper_buffer (re_string_t *pstr) internal_function;
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static void re_string_translate_buffer (re_string_t *pstr) internal_function;
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