--- /dev/null
+ BASH PATCH REPORT
+ =================
+
+Bash-Release: 4.3
+Patch-ID: bash43-025
+
+Bug-Reported-by: Stephane Chazelas <stephane.chazelas@gmail.com>
+Bug-Reference-ID:
+Bug-Reference-URL:
+
+Bug-Description:
+
+Under certain circumstances, bash will execute user code while processing the
+environment for exported function definitions.
+
+Patch (apply with `patch -p0'):
+
+--- a/builtins/common.h
++++ b/builtins/common.h
+@@ -33,6 +33,8 @@
+ #define SEVAL_RESETLINE 0x010
+ #define SEVAL_PARSEONLY 0x020
+ #define SEVAL_NOLONGJMP 0x040
++#define SEVAL_FUNCDEF 0x080 /* only allow function definitions */
++#define SEVAL_ONECMD 0x100 /* only allow a single command */
+
+ /* Flags for describe_command, shared between type.def and command.def */
+ #define CDESC_ALL 0x001 /* type -a */
+--- a/builtins/evalstring.c
++++ b/builtins/evalstring.c
+@@ -308,6 +308,14 @@ parse_and_execute (string, from_file, fl
+ {
+ struct fd_bitmap *bitmap;
+
++ if ((flags & SEVAL_FUNCDEF) && command->type != cm_function_def)
++ {
++ internal_warning ("%s: ignoring function definition attempt", from_file);
++ should_jump_to_top_level = 0;
++ last_result = last_command_exit_value = EX_BADUSAGE;
++ break;
++ }
++
+ bitmap = new_fd_bitmap (FD_BITMAP_SIZE);
+ begin_unwind_frame ("pe_dispose");
+ add_unwind_protect (dispose_fd_bitmap, bitmap);
+@@ -368,6 +376,9 @@ parse_and_execute (string, from_file, fl
+ dispose_command (command);
+ dispose_fd_bitmap (bitmap);
+ discard_unwind_frame ("pe_dispose");
++
++ if (flags & SEVAL_ONECMD)
++ break;
+ }
+ }
+ else
+--- a/variables.c
++++ b/variables.c
+@@ -358,13 +358,11 @@ initialize_shell_variables (env, privmod
+ temp_string[char_index] = ' ';
+ strcpy (temp_string + char_index + 1, string);
+
+- if (posixly_correct == 0 || legal_identifier (name))
+- parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST);
+-
+- /* Ancient backwards compatibility. Old versions of bash exported
+- functions like name()=() {...} */
+- if (name[char_index - 1] == ')' && name[char_index - 2] == '(')
+- name[char_index - 2] = '\0';
++ /* Don't import function names that are invalid identifiers from the
++ environment, though we still allow them to be defined as shell
++ variables. */
++ if (legal_identifier (name))
++ parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
+
+ if (temp_var = find_function (name))
+ {
+@@ -381,10 +379,6 @@ initialize_shell_variables (env, privmod
+ last_command_exit_value = 1;
+ report_error (_("error importing function definition for `%s'"), name);
+ }
+-
+- /* ( */
+- if (name[char_index - 1] == ')' && name[char_index - 2] == '\0')
+- name[char_index - 2] = '('; /* ) */
+ }
+ #if defined (ARRAY_VARS)
+ # if ARRAY_EXPORT
+--- a/subst.c
++++ b/subst.c
+@@ -8047,7 +8047,9 @@ comsub:
+
+ goto return0;
+ }
+- else if (var = find_variable_last_nameref (temp1))
++ else if (var && (invisible_p (var) || var_isset (var) == 0))
++ temp = (char *)NULL;
++ else if ((var = find_variable_last_nameref (temp1)) && var_isset (var) && invisible_p (var) == 0)
+ {
+ temp = nameref_cell (var);
+ #if defined (ARRAY_VARS)
+--- a/patchlevel.h
++++ b/patchlevel.h
+@@ -25,6 +25,6 @@
+ regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh
+ looks for to find the patch level (for the sccs version string). */
+
+-#define PATCHLEVEL 24
++#define PATCHLEVEL 25
+
+ #endif /* _PATCHLEVEL_H_ */