libctf: allow ctf_type_lname of a null pointer.
The code was meant to handle this, but accidentally dereferenced the null pointer before checking it for nullity. v5: fix tabdamage. libctf/ * ctf-types.c (ctf_type_name): Don't strlen a potentially- null pointer.
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@ -1,3 +1,8 @@
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2019-08-08 Nick Alcock <nick.alcock@oracle.com>
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* ctf-types.c (ctf_type_name): Don't strlen a potentially-
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null pointer.
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2019-08-07 Nick Alcock <nick.alcock@oracle.com>
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* ctf-impl.h (ctf_file_t) <ctf_add_processing>: New.
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@ -438,11 +438,12 @@ ssize_t
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ctf_type_lname (ctf_file_t *fp, ctf_id_t type, char *buf, size_t len)
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{
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char *str = ctf_type_aname (fp, type);
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size_t slen = strlen (str);
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size_t slen;
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if (str == NULL)
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return CTF_ERR; /* errno is set for us */
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slen = strlen (str);
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snprintf (buf, len, "%s", str);
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free (str);
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