gobject/tests/param will failed at test_value_transform() On e500mc, e500v2 and ppc476 embedded platform, since negative int transform to char fail by g_value_transform(). Here blow is the log:

ERROR:param.c:148:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == -124)

ERROR:param.c:198:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == -124)
Aborted

ERROR:param.c:248:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == -124)
Aborted

ERROR:param.c:273:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == 18446744073709551492)
Aborted

ERROR:param.c:298:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == -124)
Aborted

ERROR:param.c:323:test_value_transform: assertion failed (g_value_get_char (&dest) == -124): (132 == -124)
Aborted

According the logs, not only fail at negative int to char, but also fail at LONG  , UINT64, FLOAT and DOUBLE  convert to char.