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authorDenys Vlasenko <vda.linux@googlemail.com>2016-10-26 22:29:11 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2016-10-26 22:29:11 +0200
commit65a8b859a9a3f2bb4a62c15ca1f4d01288593734 (patch)
tree11965425b70a8cb6f40a7ad1d4d64e730be313bb /mailutils/mail.c
parent0e081d01a8ae37df11af612eb65d858c1c0f28be (diff)
downloadbusybox-65a8b859a9a3f2bb4a62c15ca1f4d01288593734.tar.gz
ash: optimize tryexec(): avoid one allocation
There was a bug in tryexec which bbox had fixed in 2003. dash had a smaller fix in 2007. Copy it. It is smaller, although it is also more quirky (requires argv[-1] to exist). Upstream commit 1: Date: Mon, 15 Oct 2007 20:24:28 +0800 [EXEC] Fixed execing of scripts with no hash-bang The function tryexec used the original name instead of the path found through PATH search. This patch fixes that. Test case: trap 'rm -f $TMP' EXIT TMP=$(tempfile -s nosuchthing) cat <<- EOF > $TMP echo OK EOF chmod u+x $TMP cd / PATH=${TMP%/*} ${TMP##*/} Old result: /bin/sh: Can't open filelgY4Fanosuchthing New result: OK Upstream commit 2: Date: Sun, 23 Dec 2007 11:02:26 +0800 [EVAL] Fix bad pointer arithmetic in evalcommand dash dies on sparc with a SIGBUS due to an arithmetic error introduced with commit 03b4958, this patch fixes it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> function old new delta evalcommand 1261 1264 +3 dotcmd 321 319 -2 tryexec 115 64 -51 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 3/-53) Total: -50 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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