Dear List, Test Program:
#include <openssl/err.h> #include <openssl/bio.h> #include <openssl/dso.h> #include <string.h>
int main()
{
BIO *bio_err=NULL;
int i;
long f=DSO_F_DLFCN_BIND_FUNC;
char buf[10]; bio_err=BIO_new(BIO_s_file());
BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); for(i=0;i<ERR_NUM_ERRORS-1;i++,f++) /* line 17 */
{
DSOerr(f,DSO_R_SYM_FAILURE);
sprintf(buf,"%d",i);
ERR_add_error_data(1,buf);
} ERR_print_errors(bio_err);
return 0;
}The Output: 2172:error:2506406A:lib(37):func(100):reason(106):c:\temp\errtest\main.c:19:0
2172:error:2506506A:lib(37):func(101):reason(106):c:\temp\errtest\main.c:19:1
2172:error:2506606A:lib(37):func(102):reason(106):c:\temp\errtest\main.c:19:2
2172:error:2506706A:lib(37):func(103):reason(106):c:\temp\errtest\main.c:19:3
2172:error:2506806A:lib(37):func(104):reason(106):c:\temp\errtest\main.c:19:4
2172:error:2506906A:lib(37):func(105):reason(106):c:\temp\errtest\main.c:19:5
2172:error:2506A06A:lib(37):func(106):reason(106):c:\temp\errtest\main.c:19:6
2172:error:2506B06A:lib(37):func(107):reason(106):c:\temp\errtest\main.c:19:7
2172:error:2506C06A:lib(37):func(108):reason(106):c:\temp\errtest\main.c:19:8
2172:error:2506D06A:lib(37):func(109):reason(106):c:\temp\errtest\main.c:19:9
2172:error:2506E06A:lib(37):func(110):reason(106):c:\temp\errtest\main.c:19:10
2172:error:2506F06A:lib(37):func(111):reason(106):c:\temp\errtest\main.c:19:11
2172:error:2507006A:lib(37):func(112):reason(106):c:\temp\errtest\main.c:19:12
2172:error:2507106A:lib(37):func(113):reason(106):c:\temp\errtest\main.c:19:13
2172:error:2507206A:lib(37):func(114):reason(106):c:\temp\errtest\main.c:19:14
That is OK. When I change the line 17 to for(i=0;i<ERR_NUM_ERRORS;i++,f++)
The Ouput: 2172:error:2506506A:lib(37):func(101):reason(106):c:\temp\errtest\main.c:19:1
2172:error:2506606A:lib(37):func(102):reason(106):c:\temp\errtest\main.c:19:2
2172:error:2506706A:lib(37):func(103):reason(106):c:\temp\errtest\main.c:19:3
2172:error:2506806A:lib(37):func(104):reason(106):c:\temp\errtest\main.c:19:4
2172:error:2506906A:lib(37):func(105):reason(106):c:\temp\errtest\main.c:19:5
2172:error:2506A06A:lib(37):func(106):reason(106):c:\temp\errtest\main.c:19:6
2172:error:2506B06A:lib(37):func(107):reason(106):c:\temp\errtest\main.c:19:7
2172:error:2506C06A:lib(37):func(108):reason(106):c:\temp\errtest\main.c:19:8
2172:error:2506D06A:lib(37):func(109):reason(106):c:\temp\errtest\main.c:19:9
2172:error:2506E06A:lib(37):func(110):reason(106):c:\temp\errtest\main.c:19:10
2172:error:2506F06A:lib(37):func(111):reason(106):c:\temp\errtest\main.c:19:11
2172:error:2507006A:lib(37):func(112):reason(106):c:\temp\errtest\main.c:19:12
2172:error:2507106A:lib(37):func(113):reason(106):c:\temp\errtest\main.c:19:13
2172:error:2507206A:lib(37):func(114):reason(106):c:\temp\errtest\main.c:19:15
2172:error:2507306A:lib(37):func(115):reason(106):c:\temp\errtest\main.c:19:
That is wrong.func(114)'s err_data should is 14 ,not 15.And func(115)'s err_data should is 15.
When I look into openssl's source,I find the ERR_set_error_data function is as follows:
void ERR_set_error_data(char *data, int flags)
{
ERR_STATE *es;
int i;
es=ERR_get_state();
i=es->top;
if (i == 0)
i=ERR_NUM_ERRORS-1;err_clear_data(es,i);
es->err_data[i]=data;
es->err_data_flags[i]=flags;
}
if (i == 0)
i=ERR_NUM_ERRORS-1;
Why?
I think this statement should be deleted.I delelted it ,and recompile openssl,link the test program.
The Output is:
1992:error:2506506A:lib(37):func(101):reason(106):c:\temp\errtest\main.c:19:1
1992:error:2506606A:lib(37):func(102):reason(106):c:\temp\errtest\main.c:19:2
1992:error:2506706A:lib(37):func(103):reason(106):c:\temp\errtest\main.c:19:3
1992:error:2506806A:lib(37):func(104):reason(106):c:\temp\errtest\main.c:19:4
1992:error:2506906A:lib(37):func(105):reason(106):c:\temp\errtest\main.c:19:5
1992:error:2506A06A:lib(37):func(106):reason(106):c:\temp\errtest\main.c:19:6
1992:error:2506B06A:lib(37):func(107):reason(106):c:\temp\errtest\main.c:19:7
1992:error:2506C06A:lib(37):func(108):reason(106):c:\temp\errtest\main.c:19:8
1992:error:2506D06A:lib(37):func(109):reason(106):c:\temp\errtest\main.c:19:9
1992:error:2506E06A:lib(37):func(110):reason(106):c:\temp\errtest\main.c:19:10
1992:error:2506F06A:lib(37):func(111):reason(106):c:\temp\errtest\main.c:19:11
1992:error:2507006A:lib(37):func(112):reason(106):c:\temp\errtest\main.c:19:12
1992:error:2507106A:lib(37):func(113):reason(106):c:\temp\errtest\main.c:19:13
1992:error:2507206A:lib(37):func(114):reason(106):c:\temp\errtest\main.c:19:14
1992:error:2507306A:lib(37):func(115):reason(106):c:\temp\errtest\main.c:19:15
That's OK.
zhao min
2005.1.31_________________________________________________________________
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