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Commit7ee7ee1

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BLOBs containing NUL characters (ASCII 0) can be written to the
database, but they get truncated at the first NUL by lo_readwhen they are read back. The reason for this is that lo_read inPg.xs is using the default: OUTPUT: RETVAL bufwhich uses C's strlen() to work out the length of the scalar.The code ought to read something more like: OUTPUT: RETVAL buf sv_setpvn((SV*)ST(2), buf, RETVAL);I am not sure if this needs to be done on both lo_read methodsin this file, but I changed both and have not since had anyproblems with truncated BLOBs.Douglas Thomson <dougt@mugc.cc.monash.edu.au>
1 parent714efa8 commit7ee7ee1

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  • src/interfaces/perl5

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‎src/interfaces/perl5/Pg.xs‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
/*-------------------------------------------------------
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*
3-
* $Id: Pg.xs,v 1.12 1999/02/19 23:27:17 tgl Exp $
3+
* $Id: Pg.xs,v 1.13 1999/10/13 02:26:37 momjian Exp $ with patch for NULs
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*
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* Copyright (c) 1997, 1998 Edmund Mergl
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*
@@ -643,7 +643,7 @@ lo_read(conn, fd, buf, len)
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}
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OUTPUT:
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RETVAL
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buf
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bufsv_setpvn((SV*)ST(2),buf,RETVAL);/* to handle NULs */
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int
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lo_write(conn,fd,buf,len)
@@ -1029,7 +1029,7 @@ lo_read(conn, fd, buf, len)
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}
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OUTPUT:
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RETVAL
1032-
buf
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bufsv_setpvn((SV*)ST(2),buf,RETVAL);/* to handle NULs */
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int

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