BUG/MINOR: stats: make field_str() return an empty string on NULL
It already returns an empty string when the field is empty, but as a preventive measure we should do the same when the string itself is a NULL. While it is not supposed to happen, it will make the code more resistant against failed allocations and unexpected results. This fix should be backported to 1.7.
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@ -50,7 +50,7 @@ static inline enum field_nature field_nature(const struct field *f, int e)
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static inline const char *field_str(const struct field *f, int e)
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{
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return (field_format(f, e) == FF_STR) ? f[e].u.str : "";
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return (field_format(f, e) == FF_STR && f[e].u.str) ? f[e].u.str : "";
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}
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static inline struct field mkf_s32(uint32_t type, int32_t value)
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