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Fix memory leak on unset of associative array (#64)

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Associative arrays weren't being properly freed from memory, which
was causing a memory leak.

This commit incorporates a patch and reproducer/regress test from:
https://www.mail-archive.com/ast-users@lists.research.att.com/msg01016.html

src/cmd/ksh93/sh/name.c:
- Properly free associative arrays from memory in nv_delete().

src/cmd/ksh93/tests/leaks.sh:
- Add regression test.
This commit is contained in:
Johnothan King 2020-07-08 17:09:40 -07:00 • committed by GitHub
parent bf79131f40
commit e70925ce10
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11
src/cmd/ksh93/sh/name.c
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@ -1298,7 +1298,18 @@ void nv_delete(Namval_t* np, Dt_t *root, int flags)
if(dtdelete(root,np))
{
if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np)))
{
Namarr_t *ap;
if(nv_isarray(np) && np->nvfun && (ap=nv_arrayptr(np)) && array_assoc(ap))
{
/* free associative array from memory */
while(nv_associative(np,0,NV_ANEXT))
nv_associative(np,0,NV_ADELETE);
nv_associative(np,0,NV_AFREE);
free((void*)np->nvfun);
}
free((void*)np);
}
}
#if 0
else