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lib: Always set errno in hcreate_r

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This could give a confusing error message if it failed and didn't set
errno.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Sean Anderson 2020-06-24 06:41:15 -04:00 • committed by Andes
parent 038b13ee81
commit 60ffcf218f
1 changed files with 6 additions and 2 deletions
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8
lib/hashtable.c
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@ -110,8 +110,10 @@ int hcreate_r(size_t nel, struct hsearch_data *htab)
}
/* There is still another table active. Return with error. */
if (htab->table != NULL)
if (htab->table != NULL) {
__set_errno(EINVAL);
return 0;
}
/* Change nel to the first prime number not smaller as nel. */
nel |= 1; /* make odd */
@ -124,8 +126,10 @@ int hcreate_r(size_t nel, struct hsearch_data *htab)
/* allocate memory and zero out */
htab->table = (struct env_entry_node *)calloc(htab->size + 1,
sizeof(struct env_entry_node));
if (htab->table == NULL)
if (htab->table == NULL) {
__set_errno(ENOMEM);
return 0;
}
/* everything went alright */
return 1;