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Don't pass a NULL pointer to memcpy

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The memcpy and related functions expects a valid pointer, even if the
size is zero. Most libc implementations will handle a NULL pointer just
fine, but that's not guaranteed.

Simply skip the call when there is nothing to copy.
This commit is contained in:
Jef Driesen 2022-10-16 21:29:49 +02:00
parent c5813d624a
commit 3d388a0a96
1 changed files with 3 additions and 1 deletions
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4
src/deepsix_excursion.c
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@ -163,7 +163,9 @@ deepsix_excursion_recv (deepsix_excursion_device_t *device, unsigned char grp, u
return DC_STATUS_PROTOCOL; return DC_STATUS_PROTOCOL;
} }
memcpy(data, packet + 4, len); if (len) {
memcpy(data, packet + 4, len);
}
if (actual) if (actual)
*actual = len; *actual = len;