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| author | Frank Terbeck <bewater@users.sourceforge.net> | 2012-01-16 22:14:11 +0000 |
|---|---|---|
| committer | Frank Terbeck <bewater@users.sourceforge.net> | 2012-01-16 22:14:11 +0000 |
| commit | c8381cda78016f61e1a30cc34f1fb996300a0d41 (patch) | |
| tree | 30cb033db7a440b82a2630a64faa74cdfac82c73 | |
| parent | 737a87654f6bb4f26890add0cb5b6aa7653244d5 (diff) | |
| download | zsh-c8381cda78016f61e1a30cc34f1fb996300a0d41.tar.gz zsh-c8381cda78016f61e1a30cc34f1fb996300a0d41.tar.xz zsh-c8381cda78016f61e1a30cc34f1fb996300a0d41.zip | |
30111: Src/exec.c: Fix segfaults with exec options.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Src/exec.c | 13 |
2 files changed, 17 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index f9014820c..c6da3cf84 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2012-01-16 Frank Terbeck <ft@bewatermyfriend.org> + + * 30111: Src/exec.c: Fix segfaults with exec options. + 2012-01-09 Peter Stephenson <p.w.stephenson@ntlworld.com> * Stepan Koltsov: 30105: Completion/Unix/Command/_stgit: fix @@ -15856,5 +15860,5 @@ ***************************************************** * This is used by the shell to define $ZSH_PATCHLEVEL -* $Revision: 1.5561 $ +* $Revision: 1.5562 $ ***************************************************** diff --git a/Src/exec.c b/Src/exec.c index 9b3c50372..44fcbdd9f 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -2487,6 +2487,11 @@ execcmd(Estate state, int input, int output, int how, int last1) * with the zsh style. */ while (next && *next == '-' && strlen(next) >= 2) { + if (!firstnode(args)) { + zerr("exec requires a command to execute"); + errflag = lastval = 1; + return; + } uremnode(args, firstnode(args)); if (!strcmp(next, "--")) break; @@ -2499,6 +2504,11 @@ execcmd(Estate state, int input, int output, int how, int last1) /* position on last non-NULL character */ cmdopt += strlen(cmdopt+1); } else { + if (!firstnode(args)) { + zerr("exec requires a command to execute"); + errflag = lastval = 1; + return; + } if (!nextnode(firstnode(args))) { zerr("exec flag -a requires a parameter"); errflag = lastval = 1; @@ -2521,7 +2531,8 @@ execcmd(Estate state, int input, int output, int how, int last1) return; } } - next = (char *) getdata(nextnode(firstnode(args))); + if (firstnode(args) && nextnode(firstnode(args))) + next = (char *) getdata(nextnode(firstnode(args))); } if (exec_argv0) { char *str, *s; |