Re: Memory leaks found by valgrind

[Peter Stephenson <pws@csr.com>]

Felix Rosencrantz wrote:
> The only new leak I found was the following.   This I believe is related
> to replace-string command.  When I tried that widget, I would get more
> leaks.  (I haven't tried using other recent features/changes.)
>  62 bytes in 62 blocks are definitely lost in loss record 5 of 13
>     at 0x40165A60: malloc (vg_clientfuncs.c:100)
>     by 0x8086275: zalloc (mem.c:490)
>     by 0x810536C: set_prepost (zle_params.c:485)
>     by 0x810541E: set_postdisplay (zle_params.c:515)
>     by 0x808F7F4: setstrvalue (params.c:1608)
>     by 0x8090BAC: assignsparam (params.c:1994)
>     by 0x805F0A6: addvars (exec.c:1598)
>     by 0x805CDC9: execsimple (exec.c:756)

This could be the following, which needs patching anyway.

Index: Src/Zle/zle_params.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/Zle/zle_params.c,v
retrieving revision 1.8
diff -u -r1.8 zle_params.c
--- Src/Zle/zle_params.c	27 Jan 2003 14:55:02 -0000	1.8
+++ Src/Zle/zle_params.c	5 Mar 2003 13:58:09 -0000
@@ -482,8 +482,10 @@
     }
     if (x) {
 	unmetafy(x, lenvar);
-	*textvar = (unsigned char *)zalloc(*lenvar);
-	memcpy((char *)*textvar, x, *lenvar);
+	if (*lenvar) {
+	    *textvar = (unsigned char *)zalloc(*lenvar);
+	    memcpy((char *)*textvar, x, *lenvar);
+	}
 	free(x);
     }
 }

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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