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Fix minor memory leak when expanding ${variable}s

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Noticed by:	Dave Hart
MFC plans:	after checking with re@
This commit is contained in:
Garance A Drosehn 2005-07-18 22:18:16 +00:00
parent 991e00dffb
commit 9afe6a5bf9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=148142
1 changed files with 5 additions and 1 deletions
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6
usr.bin/env/envopts.c vendored
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@ -423,6 +423,7 @@ expand_vars(int in_thisarg, char **thisarg_p, char **dest_p, const char **src_p)
fprintf(stderr,
"#env replacing ${%s} with null string\n",
vname);
free(vname);
return (NULL);
}
@ -435,8 +436,10 @@ expand_vars(int in_thisarg, char **thisarg_p, char **dest_p, const char **src_p)
* shorter than the ${VARNAME} reference that it replaces, then our
* caller can just copy the value to the existing destination.
*/
if (strlen(vname) + 3 >= strlen(vvalue))
if (strlen(vname) + 3 >= strlen(vvalue)) {
free(vname);
return (vvalue);
}
/*
* The value is longer than the string it replaces, which means the
@ -460,5 +463,6 @@ expand_vars(int in_thisarg, char **thisarg_p, char **dest_p, const char **src_p)
*newstr = '\0';
}
*dest_p = strchr(newstr, '\0');
free(vname);
return (vvalue);
}