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Fix for CONC-177: Fixed length calculation for zerofill conversion from

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float/double to string
This commit is contained in:
Georg Richter
2016-05-14 17:58:13 +02:00
parent 3823a0f7a9
commit ca68323c7b
2 changed files with 60 additions and 12 deletions
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13
libmariadb/ma_stmt_codec.c
View File

@@ -311,7 +311,7 @@ static void convert_froma_string(MYSQL_BIND *r_param, char *buffer, size_t len)
memcpy(r_param->buffer, start, MIN(copylen, r_param->buffer_length));
}
if (copylen < r_param->buffer_length)
((char *)r_param->buffer)[copylen]= '\0';
((char *)r_param->buffer)[copylen]= 0;
*r_param->error= (copylen > r_param->buffer_length);
*r_param->length= (ulong)len;
@@ -592,9 +592,11 @@ static void convert_from_float(MYSQL_BIND *r_param, const MYSQL_FIELD *field, fl
if (field->length < length || field->length > MAX_DOUBLE_STRING_REP_LENGTH - 1)
break;
ma_bmove_upp(buff + field->length, buff + length, length);
memset((char*) buff, 0, field->length - length);
memset((char*) buff, '0', field->length - length);
length= field->length;
}
convert_froma_string(r_param, buff, strlen(buff));
convert_froma_string(r_param, buff, length);
}
break;
}
@@ -689,9 +691,10 @@ static void convert_from_double(MYSQL_BIND *r_param, const MYSQL_FIELD *field, d
if (field->length < length || field->length > MAX_DOUBLE_STRING_REP_LENGTH - 1)
break;
ma_bmove_upp(buff + field->length, buff + length, length);
memset((char*) buff, 0, field->length - length);
memset((char*) buff, '0', field->length - length);
length= field->length;
}
convert_froma_string(r_param, buff, strlen(buff));
convert_froma_string(r_param, buff, length);
}
break;
}

45
unittest/libmariadb/ps_bugs.c
View File

@@ -4147,7 +4147,52 @@ static int test_conc167(MYSQL *mysql)
return OK;
}
static int test_conc177(MYSQL *mysql)
{
MYSQL_STMT *stmt;
int rc;
MYSQL_BIND bind[2];
char *stmt_str= "SELECT a,b FROM t1";
char buf1[128], buf2[128];
rc= mysql_query(mysql, "DROP TABLE IF EXISTS t1");
check_mysql_rc(rc, mysql);
rc= mysql_query(mysql, "CREATE TABLE t1 (a double zerofill default 8.8,b float zerofill default 8.8)");
check_mysql_rc(rc, mysql);
rc= mysql_query(mysql, "INSERT INTO t1 VALUES (DEFAULT, DEFAULT)");
check_mysql_rc(rc, mysql);
stmt= mysql_stmt_init(mysql);
rc= mysql_stmt_prepare(stmt, stmt_str, strlen(stmt_str));
check_stmt_rc(rc, stmt);
rc= mysql_stmt_execute(stmt);
check_stmt_rc(rc, stmt);
memset(bind, 0, 2 * sizeof(MYSQL_BIND));
bind[0].buffer= &buf1;
bind[0].buffer_type= MYSQL_TYPE_STRING;
bind[0].buffer_length= 128;
bind[1].buffer= &buf2;
bind[1].buffer_type= MYSQL_TYPE_STRING;
bind[1].buffer_length= 128;
rc= mysql_stmt_bind_result(stmt, bind);
check_stmt_rc(rc, stmt);
rc= mysql_stmt_fetch(stmt);
mysql_stmt_close(stmt);
diag("buf1 %s\nbuf2 %s", buf1, buf2);
FAIL_IF(strcmp(buf1, "00000000000000000008.8"), "Expected 00000000000000000008.8");
FAIL_IF(strcmp(buf2, "0000000008.8"), "Expected 0000000008.8");
return OK;
}
struct my_tests_st my_tests[] = {
{"test_conc177", test_conc177, TEST_CONNECTION_DEFAULT, 0, NULL, NULL},
{"test_conc167", test_conc167, TEST_CONNECTION_DEFAULT, 0, NULL, NULL},
{"test_conc168", test_conc168, TEST_CONNECTION_DEFAULT, 0, NULL, NULL},
{"test_conc155", test_conc155, TEST_CONNECTION_DEFAULT, 0, NULL, NULL},