ash: do not split the result of tilde expansion

A tilde expansion generates a valid pathname. Splitting it using IFS
either leaves it unchanged or changes it to something unintended.

Example:
   IFS=m HOME=/tmp; printf "%s\n" ~

Based on this commit authored by Jilles Tjoelker:

   http://git.kernel.org/cgit/utils/dash/dash.git/commit/?id=834629283f6c629a4da05ef60bae9445c954a19a

Signed-off-by: Ron Yorston <rmy@tigress.co.uk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/shell/ash.c b/shell/ash.c
index 0f9f73ec369825108b1040ed45d4956f8cb53db6..b568013b425585973519dd08d7f834685a501f5e 100644 (file)
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -5791,7 +5791,6 @@ exptilde(char *startp, char *p, int flags)
        struct passwd *pw;
        const char *home;
        int quotes = flags & (EXP_FULL | EXP_CASE | EXP_REDIR);
-       int startloc;
 
        name = p + 1;
 
@@ -5823,9 +5822,7 @@ exptilde(char *startp, char *p, int flags)
        if (!home || !*home)
                goto lose;
        *p = c;
-       startloc = expdest - (char *)stackblock();
        strtodest(home, SQSYNTAX, quotes);
-       recordregion(startloc, expdest - (char *)stackblock(), 0);
        return p;
  lose:
        *p = c;