use numeric_limits in draw_marker
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@ -142,7 +142,7 @@ static void launch_url(unsigned id) {
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}
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static void draw_marker(cairo_t *cr, const char *font, long x, long y, int padding, unsigned id) {
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char buffer[3];
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char buffer[std::numeric_limits<unsigned>::digits10 + 1];
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cairo_text_extents_t ext;
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cairo_select_font_face(cr, font, CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
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