Bug #5765 error in mysql_fetch_field() and mysql_fetch_fields()
Submitted: 27 Sep 2004 15:23 Modified: 6 Nov 2004 11:08
Reporter: Salvatore Sorrentino Email Updates:
Status: No Feedback Impact on me:
Category:MySQL Server Severity:S1 (Critical)
Version:4.1 OS:MacOS (OS X)
Assigned to: Assigned Account CPU Architecture:Any

[27 Sep 2004 15:23] Salvatore Sorrentino
When using mysql_fetch_fields(), the the client lib skips every other field in the array, eventually 
causing a memory access error. When using mysql_fetch_field() the field_type does not report 

How to repeat:
//if (fieldNames) [fieldNames release];
unsigned cnt = mysql_num_fields(res);
field = mysql_fetch_fields(res);
unsigned j;
myFields = malloc_zone_malloc(mallocZone, sizeof(int) * cnt);
myFields = malloc(sizeof(int) * cnt);
//unsigned cntr = 0;
//fieldNames = [[NSMutableArray alloc] initWithCapacity:cnt];
for(i = 0; i < cnt; i++)
	//NSString *name = [[NSString alloc]  initWithCString:field[i].name];
	myFields[i] = field[i].type;
	printf("Field %u = %s, type = %i" , i, field[i].name, myFields[i]);
	//[fieldNames addObject:name];
	//[name release];

Suggested fix:
[6 Oct 2004 11:08] Hartmut Holzgraefe
Can you please provide a complete compilable example that
shows the problem and make sure that this is not a problem 
in your code?
[14 Feb 2005 22:54] Bugs System
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".