gcc 2.96 ICE with -Wlarger-than-32768
>Submitter-Id: net-debian
>Originator: Randolph Chung
>Organization: Debian
>Confidential: no
>Synopsis: cc1 segmentation fault when passed -Wlarger-than-32768
>Severity: serious
>Priority: low
>Category: c
>Class: ice-on-legal-code
>Release: 2.96 (Debian testing/unstable) (equivalent to rh 2.96-101 codebase)
>Environment:
System: Linux pippin 2.4.9-itanium-smp #1 SMP Mon Sep 24 15:41:45 MDT 2001 ia64 unknown
Architecture: ia64
host: ia64-unknown-linux-gnu
build: ia64-unknown-linux-gnu
target: ia64-unknown-linux-gnu
>Description:
(gdb) run test.i -mb-step -quiet -dumpbase test.c -Wlarger-than-32768 -version -o test.s
Starting program: /space/debian/gcc-2.96-2.96/build/gcc/cc1 test.i -mb-step -quiet -dumpbase test.c -Wlarger-than-32768 -version -o test.s
GNU C version 2.96 20000731 (Debian GNU/Linux IA64 experimental) (ia64-linux) compiled by GNU C version 2.96 20000731 (Debian GNU/Linux IA64 experimental).
Program received signal SIGSEGV, Segmentation fault.
fiinish_functioe (nested=0) at ../../src/gcc/c-decl.c:6711
6711 if (ret_type && TREE_CODE (TYPE_SIZE_UNIT (ret_type)) == INTEGER_CST
(gdb) print ret_type
$1 = (union tree_node *) 0x20000000002cb600
(gdb) print ret_type->type.size_unit
$2 = (union tree_node *) 0x0
>How-To-Repeat:
% gcc -v -c -save-temps -Wlarger-than-32768 test.c
Reading specs from /usr/lib/gcc-lib/ia64-linux/2.96/specs
gcc version 2.96 20000731 (Debian GNU/Linux IA64 experimental)
/usr/lib/gcc-lib/ia64-linux/2.96/cpp0 -lang-c -v -D__GNUC__=2 -D__GNUC_MINOR__=
96 -D__GNUC_PATCHLEVEL__=0 -D__ia64 -D__ia64__ -D__linux -D__linux__ -D_LONGLONG
-Dlinux -Dunix -D__LP64__ -D__ELF__ -D__ia64 -D__ia64__ -D__linux -D__linux__ -
D_LONGLONG -D__linux__ -D__unix__ -D__LP64__ -D__ELF__ -D__linux -D__unix -Asyst
em(linux) -Acpu(ia64) -Amachine(ia64) -D__NO_INLINE__ -Wlarger-than-32768 -D__LO
NG_MAX__=9223372036854775807L test.c test.i
GNU CPP version 2.96 20000731 (Debian GNU/Linux IA64 experimental) (cpplib) (IA-
64)
ignoring nonexistent directory "/usr/ia64-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/lib/gcc-lib/ia64-linux/2.96/include
/usr/include
End of search list.
/usr/lib/gcc-lib/ia64-linux/2.96/cc1 test.i -mb-step -quiet -dumpbase test.c -W
larger-than-32768 -version -o test.s
GNU C version 2.96 20000731 (Debian GNU/Linux IA64 experimental) (ia64-linux) co
mpiled by GNU C version 2.96 20000731 (Debian GNU/Linux IA64 experimental).
test.c: In function `oops':
test.c:8: Internal error: Segmentation fault.
Please submit a full bug report.
test.c:
#include <stdio.h>
FILE *msgfile = NULL;
static void oops (void)
{
fprintf (msgfile, "moo\n");
}
preprocessed version:
# 1 "test.c"
# 1 "/usr/include/stdio.h" 1 3
# 28 "/usr/include/stdio.h" 3
# 1 "/usr/include/features.h" 1 3
# 283 "/usr/include/features.h" 3
# 1 "/usr/include/sys/cdefs.h" 1 3
# 284 "/usr/include/features.h" 2 3
# 312 "/usr/include/features.h" 3
# 1 "/usr/include/gnu/stubs.h" 1 3
# 313 "/usr/include/features.h" 2 3
# 29 "/usr/include/stdio.h" 2 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 199 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 3
typedef long unsigned int size_t;
# 35 "/usr/include/stdio.h" 2 3
# 1 "/usr/include/bits/types.h" 1 3
# 26 "/usr/include/bits/types.h" 3
# 1 "/usr/include/features.h" 1 3
# 27 "/usr/include/bits/types.h" 2 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 30 "/usr/include/bits/types.h" 2 3
typedef unsigned char __u_char;
typedef unsigned short int __u_short;
typedef unsigned int __u_int;
typedef unsigned long int __u_long;
typedef unsigned long int __u_quad_t;
typedef long int __quad_t;
typedef signed char __int8_t;
typedef unsigned char __uint8_t;
typedef signed short int __int16_t;
typedef unsigned short int __uint16_t;
typedef signed int __int32_t;
typedef unsigned int __uint32_t;
typedef signed long int __int64_t;
typedef unsigned long int __uint64_t;
typedef __quad_t *__qaddr_t;
typedef __uint64_t __dev_t;
typedef __uint32_t __uid_t;
typedef __uint32_t __gid_t;
typedef __uint64_t __ino_t;
typedef __uint64_t __ino64_t;
typedef __uint32_t __mode_t;
typedef __uint64_t __nlink_t;
typedef __int64_t __off_t;
typedef __int64_t __off64_t;
typedef __int64_t __loff_t;
typedef __int32_t __pid_t;
typedef __int64_t __ssize_t;
typedef __uint64_t __rlim_t;
typedef __uint64_t __rlim64_t;
typedef __int64_t __blkcnt_t;
typedef __int64_t __blkcnt64_t;
typedef __uint64_t __fsblkcnt_t;
typedef __uint64_t __fsblkcnt64_t;
typedef __uint64_t __fsfilcnt_t;
typedef __uint64_t __fsfilcnt64_t;
typedef __uint32_t __id_t;
typedef struct
{
int __val[2];
} __fsid_t;
typedef int __daddr_t;
typedef char *__caddr_t;
typedef long int __time_t;
typedef unsigned int __useconds_t;
typedef long int __suseconds_t;
typedef long int __swblk_t;
typedef long int __clock_t;
typedef int __key_t;
typedef int __clockid_t;
typedef int __timer_t;
typedef int __ipc_pid_t;
typedef long int __blksize_t;
typedef int __t_scalar_t;
typedef unsigned int __t_uscalar_t;
typedef long int __intptr_t;
typedef unsigned int __socklen_t;
# 1 "/usr/include/bits/pthreadtypes.h" 1 3
# 23 "/usr/include/bits/pthreadtypes.h" 3
# 1 "/usr/include/bits/sched.h" 1 3
# 68 "/usr/include/bits/sched.h" 3
struct __sched_param
{
int __sched_priority;
};
# 24 "/usr/include/bits/pthreadtypes.h" 2 3
struct _pthread_fastlock
{
long int __status;
int __spinlock;
};
typedef struct _pthread_descr_struct *_pthread_descr;
typedef struct __pthread_attr_s
{
int __detachstate;
int __schedpolicy;
struct __sched_param __schedparam;
int __inheritsched;
int __scope;
size_t __guardsize;
int __stackaddr_set;
void *__stackaddr;
size_t __stacksize;
} pthread_attr_t;
typedef struct
{
struct _pthread_fastlock __c_lock;
_pthread_descr __c_waiting;
} pthread_cond_t;
typedef struct
{
int __dummy;
} pthread_condattr_t;
typedef unsigned int pthread_key_t;
typedef struct
{
int __m_reserved;
int __m_count;
_pthread_descr __m_owner;
int __m_kind;
struct _pthread_fastlock __m_lock;
} pthread_mutex_t;
typedef struct
{
int __mutexkind;
} pthread_mutexattr_t;
typedef int pthread_once_t;
# 140 "/usr/include/bits/pthreadtypes.h" 3
typedef unsigned long int pthread_t;
# 114 "/usr/include/bits/types.h" 2 3
# 37 "/usr/include/stdio.h" 2 3
# 45 "/usr/include/stdio.h" 3
typedef struct _IO_FILE FILE;
# 55 "/usr/include/stdio.h" 3
typedef struct _IO_FILE __FILE;
# 65 "/usr/include/stdio.h" 3
# 1 "/usr/include/libio.h" 1 3
# 32 "/usr/include/libio.h" 3
# 1 "/usr/include/_G_config.h" 1 3
# 9 "/usr/include/_G_config.h" 3
# 1 "/usr/include/bits/types.h" 1 3
# 10 "/usr/include/_G_config.h" 2 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 287 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 3
typedef int wchar_t;
# 312 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 3
typedef unsigned int wint_t;
# 15 "/usr/include/_G_config.h" 2 3
# 24 "/usr/include/_G_config.h" 3
# 1 "/usr/include/wchar.h" 1 3
# 48 "/usr/include/wchar.h" 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 49 "/usr/include/wchar.h" 2 3
# 1 "/usr/include/bits/wchar.h" 1 3
# 51 "/usr/include/wchar.h" 2 3
# 67 "/usr/include/wchar.h" 3
typedef struct
{
int __count;
union
{
wint_t __wch;
char __wchb[4];
} __value;
} __mbstate_t;
# 25 "/usr/include/_G_config.h" 2 3
typedef struct
{
__off_t __pos;
__mbstate_t __state;
} _G_fpos_t;
typedef struct
{
__off64_t __pos;
__mbstate_t __state;
} _G_fpos64_t;
# 44 "/usr/include/_G_config.h" 3
# 1 "/usr/include/gconv.h" 1 3
# 26 "/usr/include/gconv.h" 3
# 1 "/usr/include/features.h" 1 3
# 27 "/usr/include/gconv.h" 2 3
# 1 "/usr/include/wchar.h" 1 3
# 48 "/usr/include/wchar.h" 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 49 "/usr/include/wchar.h" 2 3
# 1 "/usr/include/bits/wchar.h" 1 3
# 51 "/usr/include/wchar.h" 2 3
# 29 "/usr/include/gconv.h" 2 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stddef.h" 1 3
# 32 "/usr/include/gconv.h" 2 3
enum
{
__GCONV_OK = 0,
__GCONV_NOCONV,
__GCONV_NODB,
__GCONV_NOMEM,
__GCONV_EMPTY_INPUT,
__GCONV_FULL_OUTPUT,
__GCONV_ILLEGAL_INPUT,
__GCONV_INCOMPLETE_INPUT,
__GCONV_ILLEGAL_DESCRIPTOR,
__GCONV_INTERNAL_ERROR
};
enum
{
__GCONV_IS_LAST = 0x0001,
__GCONV_IGNORE_ERRORS = 0x0002
};
struct __gconv_step;
struct __gconv_step_data;
struct __gconv_loaded_object;
struct __gconv_trans_data;
typedef int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *,
__const unsigned char **, __const unsigned char *,
unsigned char **, size_t *, int, int);
typedef int (*__gconv_init_fct) (struct __gconv_step *);
typedef void (*__gconv_end_fct) (struct __gconv_step *);
typedef int (*__gconv_trans_fct) (struct __gconv_step *,
struct __gconv_step_data *, void *,
__const unsigned char *,
__const unsigned char **,
__const unsigned char *, unsigned char **,
size_t *);
typedef int (*__gconv_trans_context_fct) (void *, __const unsigned char *,
__const unsigned char *,
unsigned char *, unsigned char *);
typedef int (*__gconv_trans_query_fct) (__const char *, __const char ***,
size_t *);
typedef int (*__gconv_trans_init_fct) (void **, const char *);
typedef void (*__gconv_trans_end_fct) (void *);
struct __gconv_trans_data
{
__gconv_trans_fct __trans_fct;
__gconv_trans_context_fct __trans_context_fct;
__gconv_trans_end_fct __trans_end_fct;
void *__data;
struct __gconv_trans_data *__next;
};
struct __gconv_step
{
struct __gconv_loaded_object *__shlib_handle;
__const char *__modname;
int __counter;
char *__from_name;
char *__to_name;
__gconv_fct __fct;
__gconv_init_fct __init_fct;
__gconv_end_fct __end_fct;
int __min_needed_from;
int __max_needed_from;
int __min_needed_to;
int __max_needed_to;
int __stateful;
void *__data;
};
struct __gconv_step_data
{
unsigned char *__outbuf;
unsigned char *__outbufend;
int __flags;
int __invocation_counter;
int __internal_use;
__mbstate_t *__statep;
__mbstate_t __state;
struct __gconv_trans_data *__trans;
};
typedef struct __gconv_info
{
size_t __nsteps;
struct __gconv_step *__steps;
__extension__ struct __gconv_step_data __data [0];
} *__gconv_t;
# 45 "/usr/include/_G_config.h" 2 3
typedef union
{
struct __gconv_info __cd;
struct
{
struct __gconv_info __cd;
struct __gconv_step_data __data;
} __combined;
} _G_iconv_t;
typedef int _G_int16_t __attribute__ ((__mode__ (__HI__)));
typedef int _G_int32_t __attribute__ ((__mode__ (__SI__)));
typedef unsigned int _G_uint16_t __attribute__ ((__mode__ (__HI__)));
typedef unsigned int _G_uint32_t __attribute__ ((__mode__ (__SI__)));
# 33 "/usr/include/libio.h" 2 3
# 53 "/usr/include/libio.h" 3
# 1 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stdarg.h" 1 3
# 43 "/usr/lib/gcc-lib/ia64-linux/2.96/include/stdarg.h" 3
typedef __builtin_va_list __gnuc_va_list;
# 54 "/usr/include/libio.h" 2 3
# 160 "/usr/include/libio.h" 3
struct _IO_jump_t; struct _IO_FILE;
# 170 "/usr/include/libio.h" 3
typedef void _IO_lock_t;
struct _IO_marker {
struct _IO_marker *_next;
struct _IO_FILE *_sbuf;
int _pos;
# 193 "/usr/include/libio.h" 3
};
enum __codecvt_result
{
__codecvt_ok,
__codecvt_partial,
__codecvt_error,
__codecvt_noconv
};
# 261 "/usr/include/libio.h" 3
struct _IO_FILE {
int _flags;
char* _IO_read_ptr;
char* _IO_read_end;
char* _IO_read_base;
char* _IO_write_base;
char* _IO_write_ptr;
char* _IO_write_end;
char* _IO_buf_base;
char* _IO_buf_end;
char *_IO_save_base;
char *_IO_backup_base;
char *_IO_save_end;
struct _IO_marker *_markers;
struct _IO_FILE *_chain;
int _fileno;
int _blksize;
__off_t _old_offset;
unsigned short _cur_column;
signed char _vtable_offset;
char _shortbuf[1];
_IO_lock_t *_lock;
# 305 "/usr/include/libio.h" 3
__off64_t _offset;
void *__pad1;
void *__pad2;
int _mode;
char _unused2[15 * sizeof (int) - 2 * sizeof (void *)];
};
typedef struct _IO_FILE _IO_FILE;
struct _IO_FILE_plus;
extern struct _IO_FILE_plus _IO_2_1_stdin_;
extern struct _IO_FILE_plus _IO_2_1_stdout_;
extern struct _IO_FILE_plus _IO_2_1_stderr_;
# 344 "/usr/include/libio.h" 3
typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes);
typedef __ssize_t __io_write_fn (void *__cookie, __const char *__buf,
size_t __n);
typedef int __io_seek_fn (void *__cookie, __off64_t *__pos, int __w);
typedef int __io_close_fn (void *__cookie);
# 396 "/usr/include/libio.h" 3
extern int __underflow (_IO_FILE *) ;
extern int __uflow (_IO_FILE *) ;
extern int __overflow (_IO_FILE *, int) ;
extern wint_t __wunderflow (_IO_FILE *) ;
extern wint_t __wuflow (_IO_FILE *) ;
extern wint_t __woverflow (_IO_FILE *, wint_t) ;
# 426 "/usr/include/libio.h" 3
extern int _IO_getc (_IO_FILE *__fp) ;
extern int _IO_putc (int __c, _IO_FILE *__fp) ;
extern int _IO_feof (_IO_FILE *__fp) ;
extern int _IO_ferror (_IO_FILE *__fp) ;
extern int _IO_peekc_locked (_IO_FILE *__fp) ;
extern void _IO_flockfile (_IO_FILE *) ;
extern void _IO_funlockfile (_IO_FILE *) ;
extern int _IO_ftrylockfile (_IO_FILE *) ;
# 456 "/usr/include/libio.h" 3
extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
__gnuc_va_list, int *__restrict) ;
extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
__gnuc_va_list) ;
extern __ssize_t _IO_padn (_IO_FILE *, int, __ssize_t) ;
extern size_t _IO_sgetn (_IO_FILE *, void *, size_t) ;
extern __off64_t _IO_seekoff (_IO_FILE *, __off64_t, int, int) ;
extern __off64_t _IO_seekpos (_IO_FILE *, __off64_t, int) ;
extern void _IO_free_backup_area (_IO_FILE *) ;
# 66 "/usr/include/stdio.h" 2 3
# 80 "/usr/include/stdio.h" 3
typedef _G_fpos_t fpos_t;
# 129 "/usr/include/stdio.h" 3
# 1 "/usr/include/bits/stdio_lim.h" 1 3
# 130 "/usr/include/stdio.h" 2 3
extern FILE *stdin;
extern FILE *stdout;
extern FILE *stderr;
extern int remove (__const char *__filename) ;
extern int rename (__const char *__old, __const char *__new) ;
extern FILE *tmpfile (void) ;
# 161 "/usr/include/stdio.h" 3
extern char *tmpnam (char *__s) ;
extern char *tmpnam_r (char *__s) ;
# 178 "/usr/include/stdio.h" 3
extern char *tempnam (__const char *__dir, __const char *__pfx)
__attribute__ ((__malloc__));
extern int fclose (FILE *__stream) ;
extern int fflush (FILE *__stream) ;
extern int fflush_unlocked (FILE *__stream) ;
# 201 "/usr/include/stdio.h" 3
extern FILE *fopen (__const char *__restrict __filename,
__const char *__restrict __modes) ;
extern FILE *freopen (__const char *__restrict __filename,
__const char *__restrict __modes,
FILE *__restrict __stream) ;
# 231 "/usr/include/stdio.h" 3
extern FILE *fdopen (int __fd, __const char *__modes) ;
# 254 "/usr/include/stdio.h" 3
extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) ;
extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
int __modes, size_t __n) ;
extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
size_t __size) ;
extern void setlinebuf (FILE *__stream) ;
extern int fprintf (FILE *__restrict __stream,
__const char *__restrict __format, ...) ;
extern int printf (__const char *__restrict __format, ...) ;
extern int sprintf (char *__restrict __s,
__const char *__restrict __format, ...) ;
extern int vfprintf (FILE *__restrict __s, __const char *__restrict __format,
__gnuc_va_list __arg) ;
extern int vprintf (__const char *__restrict __format, __gnuc_va_list __arg)
;
extern int vsprintf (char *__restrict __s, __const char *__restrict __format,
__gnuc_va_list __arg) ;
extern int snprintf (char *__restrict __s, size_t __maxlen,
__const char *__restrict __format, ...)
__attribute__ ((__format__ (__printf__, 3, 4)));
extern int vsnprintf (char *__restrict __s, size_t __maxlen,
__const char *__restrict __format, __gnuc_va_list __arg)
__attribute__ ((__format__ (__printf__, 3, 0)));
# 325 "/usr/include/stdio.h" 3
extern int fscanf (FILE *__restrict __stream,
__const char *__restrict __format, ...) ;
extern int scanf (__const char *__restrict __format, ...) ;
extern int sscanf (__const char *__restrict __s,
__const char *__restrict __format, ...) ;
# 351 "/usr/include/stdio.h" 3
extern int fgetc (FILE *__stream) ;
extern int getc (FILE *__stream) ;
extern int getchar (void) ;
extern int getc_unlocked (FILE *__stream) ;
extern int getchar_unlocked (void) ;
extern int fgetc_unlocked (FILE *__stream) ;
extern int fputc (int __c, FILE *__stream) ;
extern int putc (int __c, FILE *__stream) ;
extern int putchar (int __c) ;
extern int fputc_unlocked (int __c, FILE *__stream) ;
extern int putc_unlocked (int __c, FILE *__stream) ;
extern int putchar_unlocked (int __c) ;
extern int getw (FILE *__stream) ;
extern int putw (int __w, FILE *__stream) ;
extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
;
# 417 "/usr/include/stdio.h" 3
extern char *gets (char *__s) ;
# 441 "/usr/include/stdio.h" 3
extern int fputs (__const char *__restrict __s, FILE *__restrict __stream)
;
# 451 "/usr/include/stdio.h" 3
extern int puts (__const char *__s) ;
extern int ungetc (int __c, FILE *__stream) ;
extern size_t fread (void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) ;
extern size_t fwrite (__const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __s) ;
extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) ;
extern size_t fwrite_unlocked (__const void *__restrict __ptr, size_t __size,
size_t __n, FILE *__restrict __stream) ;
extern int fseek (FILE *__stream, long int __off, int __whence) ;
extern long int ftell (FILE *__stream) ;
extern void rewind (FILE *__stream) ;
# 495 "/usr/include/stdio.h" 3
extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos)
;
extern int fsetpos (FILE *__stream, __const fpos_t *__pos) ;
# 531 "/usr/include/stdio.h" 3
extern void clearerr (FILE *__stream) ;
extern int feof (FILE *__stream) ;
extern int ferror (FILE *__stream) ;
extern void clearerr_unlocked (FILE *__stream) ;
extern int feof_unlocked (FILE *__stream) ;
extern int ferror_unlocked (FILE *__stream) ;
extern void perror (__const char *__s) ;
extern int sys_nerr;
extern __const char *__const sys_errlist[];
# 562 "/usr/include/stdio.h" 3
extern int fileno (FILE *__stream) ;
extern int fileno_unlocked (FILE *__stream) ;
extern FILE *popen (__const char *__command, __const char *__modes) ;
extern int pclose (FILE *__stream) ;
extern char *ctermid (char *__s) ;
# 609 "/usr/include/stdio.h" 3
extern void flockfile (FILE *__stream) ;
extern int ftrylockfile (FILE *__stream) ;
extern void funlockfile (FILE *__stream) ;
# 2 "test.c" 2
FILE *msgfile = ((void *)0);
static void oops (void)
{
fprintf (msgfile, "moo\n");
}
>Fix:
removing -Wlarger-than-32768 works around the problem
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