[Bug other/32163] New: Compiling with stack protector causes reigster spill failure

["uwe at netbsd dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Building NetBSD/sh3 soruce tree with stack protector enabled fails with

/usr/nb-ssp/tools/bin/shle--netbsdelf-gcc -O -Wall -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-traditional
-Wreturn-type -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wextra
-Wno-unused-parameter -std=gnu99 -Werror -fstack-protector -Wstack-protector
--param ssp-buffer-size=1 -D_LIBC -DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT
-DHESIOD -DINET6 -DNLS -DYP -I/usr/src/lib/libc/include -I/usr/src/lib/libc
-DSOFTFLOAT -I/usr/src/lib/libc/arch/sh3/softfloat
-I/usr/src/lib/libc/softfloat -DSOFTFLOAT_FOR_GCC -I/usr/src/sys
-I/usr/src/lib/libc/compat/stdlib -I/usr/src/lib/libc/compat/../stdlib
-I/usr/src/lib/libc/../../common/lib/libc/quad
-I/usr/src/lib/libc/../../common/lib/libc/string
-I/usr/src/lib/libc/../../common/lib/libc/arch/sh3/string
-D__DBINTERFACE_PRIVATE -DI18NMODULE_MAJOR=4 -DCITRUS
-I/usr/src/libexec/ld.elf_so -I/usr/src/lib/libc/dlfcn
-I/usr/src/lib/libc/gdtoa -DNO_FENV_H -I/usr/src/lib/libc/arch/sh3/gdtoa
-DCITRUS_ICONV -DWITH_RUNE -I/usr/src/lib/libc -DPOSIX_MISTAKE -DCOMPAT__RES
-DUSE_POLL -DPORTMAP -DWIDE_DOUBLE -DALL_STATE -DUSG_COMPAT -nostdinc -isystem
/usr/nb-ssp/distrib/landisk/usr/include -c -D_I18N_DYNAMIC -fPIC -DPIC
/usr/src/lib/libc/stdio/asprintf.c -o asprintf.so

/usr/src/lib/libc/stdio/asprintf.c: In function '_asprintf':
/usr/src/lib/libc/stdio/asprintf.c:85: error: unable to find a register to
spill in class 'R0_REGS'
/usr/src/lib/libc/stdio/asprintf.c:85: error: this is the insn:
(insn 191 211 210 7 (set (reg/f:SI 2 r2 [246])
        (mem/u/c:SI (plus:SI (reg:SI 12 r12)
                (reg/f:SI 1 r1 [247])) [0 S4 A32])) 171 {movsi_i}
(insn_list:REG_DEP_TRUE 189 (nil))
    (expr_list:REG_DEAD (reg/f:SI 1 r1 [247])
        (expr_list:REG_EQUIV (symbol_ref:SI ("__stack_chk_guard") [flags 0x40]
<var_decl 0xbb93de40 __stack_chk_guard>)
            (nil))))
/usr/src/lib/libc/stdio/asprintf.c:85: confused by earlier errors, bailing out


The compiler is gcc 4.1.2 as imported into the NetBSD tree:

shle--netbsdelf-gcc (GCC) 4.1.2 20070110 (prerelease) (NetBSD nb1 20070110)


-- 
           Summary: Compiling with stack protector causes reigster spill
                    failure
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uwe at netbsd dot org
 GCC build triplet: i386--netbsdelf
  GCC host triplet: i386--netbsdelf
GCC target triplet: sh3--netbsdelf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32163