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From the PR:
FICL's TYPE copies the counted string to HERE, as abial has remarked. Answering to abial's question, this is NOT garanteed to have enough space. ... We have dynamic memory. Even before memory-alloc got in, we already had dynamic memory. Use it, then! (ficlMalloc is sysdep, so I suppose that's why it was not used for TYPE; ficl is probably designed to work without a working ficlFree). Submitted by: "Daniel C. Sobral" <dcs@newsguy.com>
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=43135
@ -2755,26 +2755,22 @@ static void type(FICL_VM *pVM)
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{
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UNS32 count = stackPopUNS32(pVM->pStack);
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char *cp = stackPopPtr(pVM->pStack);
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char *pDest = (char *)ficlMalloc(count);
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/*
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** Since we don't have an output primitive for a counted string
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** (oops), make sure the string is null terminated. If not, copy
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** and terminate it.
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*/
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/* XXX Uses free space on top of dictionary. Is it guaranteed
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* XXX to always fit? (abial)
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*/
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if (cp[count] != '\0')
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{
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char *pDest = (char *)ficlGetDict()->here;
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if (cp != pDest)
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strncpy(pDest, cp, count);
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if (!pDest)
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vmThrowErr(pVM, "Error: out of memory");
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pDest[count] = '\0';
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cp = pDest;
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}
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strncpy(pDest, cp, count);
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pDest[count] = '\0';
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vmTextOut(pVM, cp, 0);
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ficlFree(pDest);
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return;
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}
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