shared libraries on x86 solaris using egcs-1.0.3a

["e. boasson" <eboasson at signaal dot nl>]

Symptoms
========
egcs-1.0.3a (but gcc-2.8.1 as well) sometimes generate code that contains
relocations against the text segment when both -fpic and -O are specified
on solaris 2.6/x86.

% gcc -O -fpic -shared test.i -o test.so
Text relocation remains			      referenced
    against symbol		    offset	in file
__iob                               0xc       	/var/tmp/cc0DZedA1.o
ld: fatal: relocations remain against allocatable but non-writable sections
collect2: ld returned 1 exit status


Configuration
=============
SunOS sophie 5.6 Generic i86pc i386 i86pc

Reading specs from /usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/specs
gcc version egcs-2.90.29 980515 (egcs-1.0.3 release)
(default configuration)


Erik Boasson.


Source code that produces the bug
=================================
#include <stdio.h>

void f (int i)
{
  fprintf (stderr, "%f", i * 1e-9);
}


Preprocessed source code
========================
# 1 "test.c"
# 1 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 1 3
 
 

 
 
 

 






#pragma ident	"@(#)stdio.h	1.49	97/05/09 SMI"	

# 1 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/sys/feature_tests.h" 1 3
 
 

 
 
 




#pragma ident	"@(#)feature_tests.h	1.13	97/06/26 SMI"





 











 







































 
















 

















 

























# 17 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 2 3

# 1 "/usr/include/sys/va_list.h" 1 3
 







#pragma ident	"@(#)va_list.h	1.6	96/01/26 SMI"

 













# 41 "/usr/include/sys/va_list.h" 3



typedef void *__va_list;











# 18 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 2 3


 













typedef unsigned int	size_t;



 





typedef	long long	__longlong_t;













typedef long		off_t;




typedef __longlong_t	off64_t;





typedef long		fpos_t;




typedef __longlong_t	fpos64_t;













 










 



















# 127 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 3




















































typedef struct	 
{




	int		_cnt;	 
	unsigned char	*_ptr;	 

	unsigned char	*_base;	 
	unsigned char	_flag;	 
	unsigned char	_file;	 
} FILE;


extern FILE		__iob[60 ];



extern FILE		*_lastbuf;
extern unsigned char	*_bufendtab[];

extern unsigned char	 _sibuf[], _sobuf[];


 
# 227 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 3




extern int	remove(const char *);
extern int	rename(const char *, const char *);
extern FILE	*tmpfile(void);
extern char	*tmpnam(char *);



extern int	fclose(FILE *);
extern int	fflush(FILE *);
extern FILE	*fopen(const char *, const char *);
extern FILE	*freopen(const char *, const char *, FILE *);
extern void	setbuf(FILE *, char *);


extern void setbuffer(FILE *, char *, size_t);
extern int setlinebuf(FILE *);

extern int	setvbuf(FILE *, char *, int, size_t);
 
extern int	fprintf(FILE *, const char *, ...);
 
extern int	fscanf(FILE *, const char *, ...);
 
extern int	printf(const char *, ...);
 
extern int	scanf(const char *, ...);


 
extern int	snprintf(char *, size_t, const char *, ...);

 
extern int	sprintf(char *, const char *, ...);
 
extern int	sscanf(const char *, const char *, ...);
extern int	vfprintf(FILE *, const char *, __va_list);
extern int	vprintf(const char *, __va_list);


extern int	vsnprintf(char *, size_t, const char *, __va_list);

extern int	vsprintf(char *, const char *, __va_list);
extern int	fgetc(FILE *);
extern char	*fgets(char *, int, FILE *);
extern int	fputc(int, FILE *);
extern int	fputs(const char *, FILE *);
extern int	getc(FILE *);
extern int	getchar(void);
extern char	*gets(char *);
extern int	putc(int, FILE *);
extern int	putchar(int);
extern int	puts(const char *);
extern int	ungetc(int, FILE *);
extern size_t	fread(void *, size_t, size_t, FILE *);
extern size_t	fwrite(const void *, size_t, size_t, FILE *);
extern int	fgetpos(FILE *, fpos_t *);
extern int	fseek(FILE *, long, int);
extern int	fsetpos(FILE *, const fpos_t *);
extern long	ftell(FILE *);
extern void	rewind(FILE *);
extern void	clearerr(FILE *);
extern int	feof(FILE *);
extern int	ferror(FILE *);
extern void	perror(const char *);

extern int	__filbuf(FILE *);
extern int	__flsbuf(int, FILE *);

 





extern FILE	*fdopen(int, const char *);
extern char	*ctermid(char *);
extern int	fileno(FILE *);



 


# 324 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 3


 




extern FILE	*popen(const char *, const char *);
extern char	*cuserid(char *);
extern char	*tempnam(const char *, const char *);
extern int	getopt(int, char *const *, const char *);

extern int	getsubopt(char **, char *const *, char **);

extern char	*optarg;
extern int	optind, opterr, optopt;
extern int	getw(FILE *);
extern int	putw(int, FILE *);
extern int	pclose(FILE *);



 



extern int	fseeko(FILE *, off_t, int);
extern off_t	ftello(FILE *);


 





extern FILE	*fopen64(const char *, const char *);
extern FILE	*freopen64(const char *, const char *, FILE *);
extern FILE	*tmpfile64(void);
extern int	fgetpos64(FILE *, fpos64_t *);
extern int	fsetpos64(FILE *, const fpos64_t *);
extern int	fseeko64(FILE *, off64_t, int);
extern off64_t	ftello64(FILE *);


# 472 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 3



























# 520 "/usr/local/lib/gcc-lib/i386-pc-solaris2.6/egcs-2.90.29/include/stdio.h" 3









# 1 "test.c" 2


void f (int i)
{
  fprintf ((&__iob[2]) , "%f", i * 1e-9);
}