c/9928: ICE on duplicate enum declaration

c/9928: ICE on duplicate enum declaration

[snyder]

>Number:         9928
>Category:       c
>Synopsis:       ICE on duplicate enum declaration
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-illegal-code
>Submitter-Id:   net
>Arrival-Date:   Mon Mar 03 23:26:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     scott snyder
>Release:        3.4 20030303 (experimental)
>Organization:
<organization of PR author (multiple lines)>
>Environment:
System: Linux karma 2.4.19-emp_2419p5a829i #1 Tue Sep 3 17:42:17 EST 2002 i686 unknown
Architecture: i686

	<machine, os, target, libraries (multiple lines)>
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc/configure --prefix=/usr/local/gcc --enable-threads=posix --enable-long-long : (reconfigured) 
>Description:

gcc dies with a SEGV compiling the (invalid) code below:

$ ./cc1 x.c
x.c:2: error: conflicting types for `CODES'
x.c:1: error: previous declaration of `CODES'
x.c:2: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
$

Here's where it's dying:

Program received signal SIGSEGV, Segmentation fault.
0x0839d43a in int_fits_type_p (c=0x0, type=0x4001e3cc) at ../../gcc/gcc/tree.c:4046
4046            return (! INT_CST_LT (TYPE_MAX_VALUE (type), c)
(gdb) where
#0  0x0839d43a in int_fits_type_p (c=0x0, type=0x4001e3cc) at ../../gcc/gcc/tree.c:4046
#1  0x08071a1b in finish_enum (enumtype=0x4004fd80, values=0x40038d48, attributes=0x0) at ../../gcc/gcc/c-decl.c:5564
#2  0x0804fe2b in yyparse () at c-parse.y:1692
#3  0x0805d145 in c_common_parse_file (set_yydebug=0) at ../../gcc/gcc/c-lex.c:165
During symbol reading, struct/union type gets multiply defined: struct rtx_def.
During symbol reading, struct/union type gets multiply defined: struct rtvec_def.
During symbol reading, struct/union type gets multiply defined: struct function.
#4  0x08386db5 in compile_file () at ../../gcc/gcc/toplev.c:2187
#5  0x0838d9d7 in do_compile (no_backend=0) at ../../gcc/gcc/toplev.c:5517
#6  0x0838da56 in toplev_main (argc=2, argv=0xbfffc0a4) at ../../gcc/gcc/toplev.c:5557
#7  0x080cee6c in main (argc=2, argv=0xbfffc0a4) at ../../gcc/gcc/main.c:37


>How-To-Repeat:

--------------------------------------------------
enum { CODES };
enum { CODES };
--------------------------------------------------

>Fix:
	<how to correct or work around the problem, if known (multiple lines)>
>Release-Note:
>Audit-Trail:
>Unformatted: