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BASH PATCH REPORT
=================
Bash-Release: 4.4
Patch-ID: bash44-008
Bug-Reported-by: Koichi MURASE <myoga.murase@gmail.com>
Bug-Reference-ID: <CAFLRLk-V+1AeQ2k=pY7ih6V+MfQ_w8EF3YWL2E+wmLfgKBtzXA@mail.gmail.com>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2016-11/msg00050.html
Bug-Description:
Under certain circumstances, bash will evaluate arithmetic expressions as
part of reading an expression token even when evaluation is suppressed. This
happens while evaluating a conditional expression and skipping over the
failed branch of the expression.
Index: b/expr.c
===================================================================
--- a/expr.c
+++ b/expr.c
@@ -578,24 +578,23 @@ expcond ()
rval = cval = explor ();
if (curtok == QUES) /* found conditional expr */
{
- readtok ();
- if (curtok == 0 || curtok == COL)
- evalerror (_("expression expected"));
if (cval == 0)
{
set_noeval = 1;
noeval++;
}
+ readtok ();
+ if (curtok == 0 || curtok == COL)
+ evalerror (_("expression expected"));
+
val1 = EXP_HIGHEST ();
if (set_noeval)
noeval--;
if (curtok != COL)
evalerror (_("`:' expected for conditional expression"));
- readtok ();
- if (curtok == 0)
- evalerror (_("expression expected"));
+
set_noeval = 0;
if (cval)
{
@@ -603,7 +602,11 @@ expcond ()
noeval++;
}
+ readtok ();
+ if (curtok == 0)
+ evalerror (_("expression expected"));
val2 = expcond ();
+
if (set_noeval)
noeval--;
rval = cval ? val1 : val2;
Index: b/patchlevel.h
===================================================================
--- 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 7
+#define PATCHLEVEL 8
#endif /* _PATCHLEVEL_H_ */
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