http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47509
Summary: avr-gcc error: could not split insn Product: gcc Version: 4.5.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: jh.gcc-bugzi...@plonk.de (note: copied from See also https://bugzilla.redhat.com/show_bug.cgi?id=662054) avr-gcc 4.5.1-2.fc14.1 stops with an error message: avr-gcc -Wall -W -Wno-unused-parameter -Wno-sign-compare -Wno-char-subscripts -g -Os -std=gnu99 -fdata-sections -ffunction-sections -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -mcall-prologues -fshort-enums -fno-strict-aliasing -Iprotocols/usb/usbdrv -Iprotocols/usb -DAVR_BUILD -DF_CPU=20000000UL -mmcu=atmega644 -I. -c -o protocols/uip/uip.o protocols/uip/uip.c protocols/uip/uip.c: In function 'uip_udp_new': protocols/uip/uip.c:570:1: error: could not split insn (insn 106 105 107 protocols/uip/uip.c:554 (parallel [ (set (reg:HI 24 r24 [106]) (rotate:HI (reg:HI 24 r24 [orig:105 lastport ] [105]) (const_int 8 [0x8]))) (clobber (mem/c:QI (plus:HI (reg/f:HI 28 r28) (const_int 1 [0x1])) [0 %sfp+1 S1 A8])) ]) 64 {*rotbhi} (expr_list:REG_EQUIV (mem/s/j:HI (plus:HI (reg/f:HI 26 r26 [103]) (const_int 4 [0x4])) [0 uip_udp_conns[D.4587_20].lport+0 S2 A8]) (nil))) protocols/uip/uip.c:570:1: internal compiler error: in final_scan_insn, at final.c:2650 Please submit a full bug report, with preprocessed source if appropriate. See <https://bugzilla.redhat.com/> for instructions. make: *** [protocols/uip/uip.o] Error 1 It compiles fine with 4.4.2-1.fc13 and also 4.3.3-3.fc11. Version-Release number of selected component (if applicable): avr-libc-1.7.0-1.fc14.noarch avr-gcc-4.5.1-2.fc14.1.x86_64 Steps to Reproduce: 1. git clone git://github.com/ethersex/ethersex.git 2. cd ethersex/ 3. make menuconfig -> Make sure that "UDP support" is activated in "Network", then select Exit and save the config 4. make