ECPG Segfault and variable usage question. - Mailing list pgsql-interfaces

From Jürgen Cappel
Subject ECPG Segfault and variable usage question.
Date
Msg-id JEEKIPNAKJNCFLMOBKHGAEEEDCAA.email@juergen-cappel.de
Whole thread Raw
Responses Re: ECPG Segfault and variable usage question.
Re: ECPG Segfault and variable usage question.
List pgsql-interfaces
Hello,

this is a code snippet that causes ECPG to segfault. It's quite tricky
to produce, as changing the variable name from 'var' to 'myvar' already
causes things to compile fine ...


#define CHAR_LENGTH 25
myfunction ()
{   EXEC SQL BEGIN DECLARE SECTION;   char   var[2*CHAR_LENGTH];   EXEC SQL END DECLARE SECTION;
   EXEC SQL DECLARE mycursor CURSOR FOR SELECT att1, att2 FROM mytable WHERE att1 LIKE :var ESCAPE '\\';   EXEC SQL
OPENmycursor;
 
}

Stack trace was obtained using a snapshot from about 2 weeks ago, ECPG from
the 7.4.1 release segfaults also.

#0  0x4015fdcb in chunk_free () from /lib/libc.so.6
#1  0x4015fc53 in free () from /lib/libc.so.6
#2  0x080685b7 in dump_variables (list=0x80c1408, mode=1) at variable.c:405
#3  0x08066d56 in output_statement (   stmt=0x80c14f8 "declare mycursor  cursor  for select  att1  , att2
from mytable where att1  like  ? escape '\\\\'  ", mode=0, con=0x0) at
output.c:126
#4  0x0804af02 in yyparse () at preproc.y:780
#5  0x0806671d in main (argc=8, argv=0xbffff264) at ecpg.c:409
#6  0x401089ed in __libc_start_main () from /lib/libc.so.6


Another problem that's giving me headaches trying to find a workaround for
is the following use of variables as data sources in INSERT/UPDATE
statements:
:myarray[index[10]]

Any comments, suggestions, hints ?   Thanks a lot,

Jürgen



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