http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56078
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-24 13:33:13 UTC --- Before my patch we got: 20030305-1.c:15:5: warning: excess elements in struct initializer [enabled by default] 20030305-1.c:15:5: warning: (near initialization for ‘s2_array[0]’) [enabled by default] 20030305-1.c:16:5: warning: excess elements in struct initializer [enabled by default] 20030305-1.c:16:5: warning: (near initialization for ‘s2_array[1]’) [enabled by default] 20030305-1.c:17:5: warning: excess elements in struct initializer [enabled by default] 20030305-1.c:17:5: warning: (near initialization for ‘s2_array[2]’) [enabled by default] and with the patch: 20030305-1.c:15:5: error: initialization of flexible array member in a nested context 20030305-1.c:15:5: error: (near initialization for ‘s2_array[0].s1_array’) 20030305-1.c:16:5: error: initialization of flexible array member in a nested context 20030305-1.c:16:5: error: (near initialization for ‘s2_array[1].s1_array’) 20030305-1.c:17:5: error: initialization of flexible array member in a nested context 20030305-1.c:17:5: error: (near initialization for ‘s2_array[2].s1_array’) instead. I'd lean towards the errors being correct, Joseph, do you agree? If so, I'll move the 20030305-1.c testcase into gcc.dg and add dg-error comments.