To: vim-dev@vim.org
Subject: Patch 7.2.044
Fcc: outbox
From: Bram Moolenaar <Bram@moolenaar.net>
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------------
 
Patch 7.2.044
Problem:    Crash because of STRCPY() being over protective of the destination
	    size. (Dominique Pelle)
Solution:   Add -D_FORTIFY_SOURCE=1 to CFLAGS.  Use an intermediate variable
	    for the pointer to avoid a warning.
Files:	    src/auto/configure, src/configure.in, src/eval.c
 
 
*** ../vim-7.2.043/src/auto/configure	Thu Jul 24 17:20:50 2008
--- src/auto/configure	Sun Nov 16 17:08:44 2008
***************
*** 16819,16839 ****
    LDFLAGS="$LDFLAGS -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc"
  fi
  
- { $as_echo "$as_me:$LINENO: checking for GCC 3 or later" >&5
- $as_echo_n "checking for GCC 3 or later... " >&6; }
  DEPEND_CFLAGS_FILTER=
  if test "$GCC" = yes; then
    gccmajor=`echo "$gccversion" | sed -e 's/^\([1-9]\)\..*$/\1/g'`
    if test "$gccmajor" -gt "2"; then
      DEPEND_CFLAGS_FILTER="| sed 's+-I */+-isystem /+g'"
!   fi
! fi
! if test "$DEPEND_CFLAGS_FILTER" = ""; then
!   { $as_echo "$as_me:$LINENO: result: no" >&5
  $as_echo "no" >&6; }
! else
!   { $as_echo "$as_me:$LINENO: result: yes" >&5
  $as_echo "yes" >&6; }
  fi
  
  
--- 16819,16847 ----
    LDFLAGS="$LDFLAGS -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc"
  fi
  
  DEPEND_CFLAGS_FILTER=
  if test "$GCC" = yes; then
+   { $as_echo "$as_me:$LINENO: checking for GCC 3 or later" >&5
+ $as_echo_n "checking for GCC 3 or later... " >&6; }
    gccmajor=`echo "$gccversion" | sed -e 's/^\([1-9]\)\..*$/\1/g'`
    if test "$gccmajor" -gt "2"; then
      DEPEND_CFLAGS_FILTER="| sed 's+-I */+-isystem /+g'"
!     { $as_echo "$as_me:$LINENO: result: yes" >&5
! $as_echo "yes" >&6; }
!   else
!     { $as_echo "$as_me:$LINENO: result: no" >&5
  $as_echo "no" >&6; }
!   fi
!       { $as_echo "$as_me:$LINENO: checking whether we need -D_FORTIFY_SOURCE=1" >&5
! $as_echo_n "checking whether we need -D_FORTIFY_SOURCE=1... " >&6; }
!   if test "$gccmajor" -gt "3"; then
!     CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=1"
!     { $as_echo "$as_me:$LINENO: result: yes" >&5
  $as_echo "yes" >&6; }
+   else
+     { $as_echo "$as_me:$LINENO: result: no" >&5
+ $as_echo "no" >&6; }
+   fi
  fi
  
  
*** ../vim-7.2.043/src/configure.in	Thu Jul 24 17:20:31 2008
--- src/configure.in	Sun Nov 16 17:08:40 2008
***************
*** 3152,3169 ****
  dnl But only when making dependencies, cproto and lint don't take "-isystem".
  dnl Mac gcc returns "powerpc-apple-darwin8-gcc-4.0.1 (GCC)...", need to allow
  dnl the number before the version number.
- AC_MSG_CHECKING(for GCC 3 or later)
  DEPEND_CFLAGS_FILTER=
  if test "$GCC" = yes; then
    gccmajor=`echo "$gccversion" | sed -e 's/^\([[1-9]]\)\..*$/\1/g'`
    if test "$gccmajor" -gt "2"; then
      DEPEND_CFLAGS_FILTER="| sed 's+-I */+-isystem /+g'"
    fi
- fi
- if test "$DEPEND_CFLAGS_FILTER" = ""; then
-   AC_MSG_RESULT(no)
- else
-   AC_MSG_RESULT(yes)
  fi
  AC_SUBST(DEPEND_CFLAGS_FILTER)
  
--- 3152,3176 ----
  dnl But only when making dependencies, cproto and lint don't take "-isystem".
  dnl Mac gcc returns "powerpc-apple-darwin8-gcc-4.0.1 (GCC)...", need to allow
  dnl the number before the version number.
  DEPEND_CFLAGS_FILTER=
  if test "$GCC" = yes; then
+   AC_MSG_CHECKING(for GCC 3 or later)
    gccmajor=`echo "$gccversion" | sed -e 's/^\([[1-9]]\)\..*$/\1/g'`
    if test "$gccmajor" -gt "2"; then
      DEPEND_CFLAGS_FILTER="| sed 's+-I */+-isystem /+g'"
+     AC_MSG_RESULT(yes)
+   else
+     AC_MSG_RESULT(no)
+   fi
+   dnl -D_FORTIFY_SOURCE=2 crashes Vim on strcpy(buf, "000") when buf is
+   dnl declared as char x[1] but actually longer.  Introduced in gcc 4.0.
+   AC_MSG_CHECKING(whether we need -D_FORTIFY_SOURCE=1)
+   if test "$gccmajor" -gt "3"; then
+     CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=1"
+     AC_MSG_RESULT(yes)
+   else
+     AC_MSG_RESULT(no)
    fi
  fi
  AC_SUBST(DEPEND_CFLAGS_FILTER)
  
*** ../vim-7.2.043/src/eval.c	Wed Nov 12 15:28:37 2008
--- src/eval.c	Sun Nov 16 20:46:28 2008
***************
*** 21150,21157 ****
      init_var_dict(&fc.l_avars, &fc.l_avars_var);
      add_nr_var(&fc.l_avars, &fc.fixvar[fixvar_idx++].var, "0",
  				(varnumber_T)(argcount - fp->uf_args.ga_len));
      v = &fc.fixvar[fixvar_idx++].var;
!     STRCPY(v->di_key, "000");
      v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
      hash_add(&fc.l_avars.dv_hashtab, DI2HIKEY(v));
      v->di_tv.v_type = VAR_LIST;
--- 21150,21160 ----
      init_var_dict(&fc.l_avars, &fc.l_avars_var);
      add_nr_var(&fc.l_avars, &fc.fixvar[fixvar_idx++].var, "0",
  				(varnumber_T)(argcount - fp->uf_args.ga_len));
+     /* Use "name" to avoid a warning from some compiler that checks the
+      * destination size. */
      v = &fc.fixvar[fixvar_idx++].var;
!     name = v->di_key;
!     STRCPY(name, "000");
      v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
      hash_add(&fc.l_avars.dv_hashtab, DI2HIKEY(v));
      v->di_tv.v_type = VAR_LIST;
*** ../vim-7.2.043/src/version.c	Thu Nov 20 10:26:19 2008
--- src/version.c	Thu Nov 20 10:34:31 2008
***************
*** 678,679 ****
--- 678,681 ----
  {   /* Add new patch number below this line */
+ /**/
+     44,
  /**/
 
-- 
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 /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
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