Compiling this:
#define SIZE 2u << 31 - 2
int main() {
char a[SIZE], b[SIZE];
}
Gives this compilation error:
bigcp.c: In function `main':
bigcp.c:7: error: unrecognizable insn:
(insn/f 34 33 35 (parallel [
(set (reg/f:SI 7 sp)
(plus:SI (reg/f:SI 7 sp)
(const_int -2147483656 [0xffffffff7ffffff8])))
(clobber (reg:CC 17 flags))
(clobber (mem:BLK (scratch) [0 A8]))
]) -1 (nil)
(nil))
bigcp.c:7: internal compiler error: in insn_default_length, at
insn-attrtab.c:435
Only the maximum allowed array size gives the error, and at least two objects
must be allocated on stack.
--
Summary: Internal compiler error with maximum sized array
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ulfalizer at gmail dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: FreeBSD 5.4-RELEASE i386
GCC host triplet: FreeBSD 5.4-RELEASE i386
GCC target triplet: FreeBSD 5.4-RELEASE i386
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22539
