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memmove not memcpy, src/dst overlap

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tg 2009-12-05 22:24:35 +00:00
parent 65a3713605
commit 09bda13970
1 changed files with 2 additions and 2 deletions
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4
eval.c
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@ -22,7 +22,7 @@
#include "sh.h" #include "sh.h"
__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.78 2009/12/05 17:43:45 tg Exp $"); __RCSID("$MirOS: src/bin/mksh/eval.c,v 1.79 2009/12/05 22:24:35 tg Exp $");
/* /*
* string expansion * string expansion
@ -1364,7 +1364,7 @@ debunk(char *dp, const char *sp, size_t dlen)
if ((s = cstrchr(sp, MAGIC))) { if ((s = cstrchr(sp, MAGIC))) {
if (s - sp >= (ssize_t)dlen) if (s - sp >= (ssize_t)dlen)
return (dp); return (dp);
memcpy(dp, sp, s - sp); memmove(dp, sp, s - sp);
for (d = dp + (s - sp); *s && (d - dp < (ssize_t)dlen); s++) for (d = dp + (s - sp); *s && (d - dp < (ssize_t)dlen); s++)
if (!ISMAGIC(*s) || !(*++s & 0x80) || if (!ISMAGIC(*s) || !(*++s & 0x80) ||
!vstrchr("*+?@! ", *s & 0x7f)) !vstrchr("*+?@! ", *s & 0x7f))