memset() fails on negative byte value

[Geoff Streeter]

I have logged this on github bavison/arm-mem which seems appropriate but may not be. In addition that seems to be an inactive site. This might expedite things.

memset() does not honour the "converted to an unsigned char" required by 7.21.6.1 of ISO/IEC 9899:1999(E)

signed char smallint = -3;
 signed char smallarray[10];

memset(smallarray, smallint, 10);

results in
 smallarray[0] ←→ -3
 smallarray[1] ←→ -1
 smallarray[2] ←→ -1
 smallarray[3] ←→ -1
 smallarray[4] ←→ -3
 ...
 code widens the smallint of -3 to int with sign extension - correctly. memset() fails to AND this with 0xff before shifting and ORing.

[Diederik (didi-debian)]

The reported issue, https://github.com/bavison/arm-mem/issues/1 , is fixed.
Does this bug still need to stay open?

[Launchpad Janitor (janitor)]

[Expired for Raspbian because there has been no activity for 60 days.]