[Bug target/13807] New: cc1 segfaults compiling specific thumb code

[Bug target/13807] New: cc1 segfaults compiling specific thumb code

[travis at danger dot com]

Summary:

Compiling the attached particular piece of code as thumb at -O2 causes the 
compiler to seg fault inside asm_fprintf. It has been reproduced using gcc 
3.3.2 on cygwin and gcc 3.3.1 on macos x. All were compiled using the same 
options.

Release:
gcc 3.3.2 release

Environment:
Linux version 2.4.22-gentoo-r4 (root@varmit) (gcc version 3.2.3 20030422 
(Gentoo Linux 1.4 3.2.3-r3, propolice)) #1 SMP Sat Jan 10 17:26:16 PST 2004

host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: arm-elf
Configured with: ../gcc-3.3.2/configure --prefix=/usr/local/armdev-3.3.2 --
target=arm-elf --program-prefix=arm-elf- --program-suffix=332 --with-newlib --
enable-languages=c
Thread model: single
gcc version 3.3.2

to repeat (where pco_trace.i is the attached file):
arm-elf-gcc332 -v --save-temps -c -mthumb -fno-builtin -O2 -W -Wall -mthumb-
interwork -fsigned-char -funsigned-bitfields -o pco_trace.o pco_trace.i

output is:
Reading specs from /usr/local/armdev-3.3.2-withsuffix/bin/../lib/gcc-lib/arm-
elf/3.3.2/specs
Configured with: ../gcc-3.3.2/configure --prefix=/usr/local/armdev-3.3.2 --
target=arm-elf --program-prefix=arm-elf- --program-suffix=332 --with-newlib --
enable-languages=c
Thread model: single
gcc version 3.3.2
 /usr/local/armdev-3.3.2-withsuffix/bin/../lib/gcc-lib/arm-elf/3.3.2/cc1 -
fpreprocessed pco_trace.i -quiet -dumpbase pco_trace.i -mthumb -mthumb-
interwork -auxbase-strip pco_trace.o -O2 -W -Wall -version -fno-builtin -
fsigned-char -funsigned-bitfields -o pco_trace.s
GNU C version 3.3.2 (arm-elf)
        compiled by GNU C version 3.2.3 20030422 (Gentoo Linux 1.4 3.2.3-r3, 
propolice).
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=129117
pco_trace.c: In function `read_str2ind_file':
pco_trace.c:147: warning: enumeration value `SCAN_SPACE' not handled in switch
pco_trace.c:58: warning: `fd' might be used uninitialized in this function
pco_trace.c:153: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

-- 
           Summary: cc1 segfaults compiling specific thumb code
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: travis at danger dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: arm-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[travis at danger dot com]

------- Additional Comments From travis at danger dot com  2004-01-22 02:48 -------
Created an attachment (id=5551)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5551&action=view)
preprocessed file to reproduce crash


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[travis at danger dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1989 bytes --]


------- Additional Comments From travis at danger dot com  2004-01-22 20:02 -------
FWIW here's the backtrace at the time of crash using gdb:

#0  0x080ec234 in asm_fprintf (file=0x8338660, p=0x827ec8f ", #%d]") 
at ../../gcc-3.3.2/gcc/final.c:3774
#1  0x080ebc2d in output_address (x=0x401932ac) at ../../gcc-
3.3.2/gcc/final.c:3534
#2  0x081f7ffa in arm_print_operand (stream=0x827ec8f, x=0xbfffef91, code=0) 
at ../../gcc-3.3.2/gcc/config/arm/arm.c:8773
#3  0x080ebb55 in output_operand (x=0x401932b8, code=1075379704) at ../../gcc-
3.3.2/gcc/final.c:3522
#4  0x080eb79e in output_asm_insn (template=0xbfffef91 "2\031@ðïÿ¿¸ïÿ¿³±\016\b´2
\031@`\2063\b", operands=0x830c900)
    at ../../gcc-3.3.2/gcc/final.c:3445
#5  0x080ea60b in final_scan_insn (insn=0x827ec8f, file=0x8338660, optimize=2, 
prescan=0, nopeepholes=0)
    at ../../gcc-3.3.2/gcc/final.c:2814
#6  0x080e9ff7 in final (first=0x827ec8f, file=0x8338660, optimize=2, 
prescan=0) at ../../gcc-3.3.2/gcc/final.c:1904
#7  0x081d0f61 in rest_of_compilation (decl=0x827ec8f) at ../../gcc-
3.3.2/gcc/toplev.c:3590
#8  0x0805a016 in c_expand_body (fndecl=0x40179bd0, nested_p=0, can_defer_p=1) 
at ../../gcc-3.3.2/gcc/c-decl.c:6705
#9  0x08059d97 in finish_function (nested=0, can_defer_p=1075379704) 
at ../../gcc-3.3.2/gcc/c-decl.c:6537
#10 0x08049e24 in yyparse () at c-parse.y:431
#11 0x080509f9 in c_common_parse_file (set_yydebug=1075379704) at ../../gcc-
3.3.2/gcc/c-lex.c:159
#12 0x081cfb2a in compile_file () at ../../gcc-3.3.2/gcc/toplev.c:2130
#13 0x081d4db5 in do_compile () at ../../gcc-3.3.2/gcc/toplev.c:5402
#14 0x081d4e5d in toplev_main (argc=1075379704, argv=0x0) at ../../gcc-
3.3.2/gcc/toplev.c:5432
#15 0x08088bfb in main (argc=1075379704, argv=0x4018fdf8) at ../../gcc-
3.3.2/gcc/main.c:35
#16 0x4002e90b in __libc_start_main () from /lib/libc.so.6

Looks like it goes south when it calls output_operand (x=0x401932b8 is totally 
invalid)

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[dhazeghi at yahoo dot com]

------- Additional Comments From dhazeghi at yahoo dot com  2004-01-23 20:03 -------
Created an attachment (id=5564)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5564&action=view)
slightly reduced testcase

Well, for me, source crashes in reload with an ICE (current 3.3 branch):

(insn:HI 92 221 93 17 0x40025370 (set (mem/s:QI (plus:SI (plus:SI (reg:SI 3 r3)

		    (reg:SI 1 r1))
		(const_int 4 [0x4])) [0 format S1 A8])
	(reg:QI 2 r2)) 178 {*thumb_movqi_insn} (nil)
    (expr_list:REG_EQUAL (const_int 0 [0x0])
	(nil)))
foo.i:50: internal compiler error: in reload_cse_simplify_operands, at
reload1.c:8353

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[dhazeghi at yahoo dot com]

------- Additional Comments From dhazeghi at yahoo dot com  2004-01-23 20:23 -------
Compiles fine with 3.4 branch. Richard, do you know if this is fixed, or is reload just getting lucky? 
Thanks.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rearnsha at arm dot com
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[rearnsha at arm dot com]

------- Additional Comments From rearnsha at arm dot com  2004-01-24 12:21 -------
Subject: Re:  cc1 segfaults compiling specific thumb 
 code

It looks to me rather like a duplicate of 11271.  Which is fixed for 3.4 
but not on the 3.3 branch.

If it is, then it's a hairy part of reload and it's not clear whether it 
can be fixed easily without disturbing other ports.

R.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807

[Bug target/13807] cc1 segfaults compiling specific thumb code

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-24 15:23 -------
Fixed for 3.4, unlikely going to be fixed for 3.3.3 as the current problem is a reload problem.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13807