http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51419
Bug #: 51419 Summary: length of dwarf2 debug-info-section-label too small if sizeof(void *)==2 Classification: Unclassified Product: gcc Version: 4.6.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug AssignedTo: unassig...@gcc.gnu.org ReportedBy: kikair...@gmail.com Created attachment 25989 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25989 proposal patch In dwarf2, length of debug-info-section-label (DWARF_REF_SIZE) is defined to DWARF2_ADDR_SIZE, but it is too small (2bytes) on some target. This causes an error in compiling libstdc++: /bin/sh ../libtool --tag CXX --mode=compile /tmp/ggg/./gcc/xgcc -shared-libgcc -B/tmp/ggg/./gcc -nostdinc++ -L/tmp/ggg/h8300-elf/libstdc++-v3/src -L/tmp/ggg/h8300-elf/libstdc++-v3/src/.libs -B/home/kikairoya/gcc/h8300-elf/bin/ -B/home/kikairoya/gcc/h8300-elf/lib/ -isystem /home/kikairoya/gcc/h8300-elf/include -isystem /home/kikairoya/gcc/h8300-elf/sys-include -I/tmp/ggg/h8300-elf/libstdc++-v3/include/h8300-elf -I/tmp/ggg/h8300-elf/libstdc++-v3/include -I/home/kikairoya/repos/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -Os -c -o wlocale-inst.lo /home/kikairoya/repos/gcc/libstdc++-v3/src/wlocale-inst.cc libtool: compile: /tmp/ggg/./gcc/xgcc -shared-libgcc -B/tmp/ggg/./gcc -nostdinc++ -L/tmp/ggg/h8300-elf/libstdc++-v3/src -L/tmp/ggg/h8300-elf/libstdc++-v3/src/.libs -B/home/kikairoya/gcc/h8300-elf/bin/ -B/home/kikairoya/gcc/h8300-elf/lib/ -isystem /home/kikairoya/gcc/h8300-elf/include -isystem /home/kikairoya/gcc/h8300-elf/sys-include -I/tmp/ggg/h8300-elf/libstdc++-v3/include/h8300-elf -I/tmp/ggg/h8300-elf/libstdc++-v3/include -I/home/kikairoya/repos/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -Os -c /home/kikairoya/repos/gcc/libstdc++-v3/src/wlocale-inst.cc -o wlocale-inst.o /tmp/cc12NgrP.s: Assembler messages: /tmp/cc12NgrP.s:74233: Error: value of 72828 too large for field of 2 bytes at 72912 target: h8300-elf, binutils: 2.22, gcc: 4.6.2 (both of host and cross) I think DWARF2_ADDR_SIZE needs at least 4. attach a proposal patch.