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Bug#30394: Empty HOME environment variable causes several utilities to crash

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Tilde expansion could fail when it was to expand to an empty string (such as
when HOME is set to an empty string), especially on systems where size_t is
unsigned.
This commit is contained in:
Chad MILLER 2008-08-18 13:06:27 -04:00
parent 2941024852
commit 747c3c2b2a
1 changed files with 1 additions and 1 deletions
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2
mysys/mf_pack.c
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@ -343,7 +343,7 @@ uint unpack_dirname(my_string to, const char *from)
length-=(uint) (suffix-buff)-1;
if (length+(h_length= (uint) strlen(tilde_expansion)) <= FN_REFLEN)
{
if (tilde_expansion[h_length-1] == FN_LIBCHAR)
if ((h_length > 0) && (tilde_expansion[h_length-1] == FN_LIBCHAR))
h_length--;
if (buff+h_length < suffix)
bmove(buff+h_length,suffix,length);