[SCM] gawk branch, master, updated. gawk-4.1.0-3867-g49125fb

[Andrew J. Schorr]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=49125fbf794508efdb71a4f6f18a4bc324bd76ab

commit 49125fbf794508efdb71a4f6f18a4bc324bd76ab
Author: Andrew J. Schorr <address@hidden>
Date:   Tue Jan 14 09:26:31 2020 -0500

    Fix cint off-by-one array bounds overflow check for NHAT set in the 
environment.

diff --git a/ChangeLog b/ChangeLog
index 0c2d928..55988b5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2020-01-14         Andrew J. Schorr      <address@hidden>
+
+       * cint_array.c (cint_array_init): Fix off-by-one error in array 
+       bounds overflow check for an NHAT value set in the environment.
+       Thanks to Michael Builov <address@hidden> for the report.
+
 2020-01-08         Arnold D. Robbins     <address@hidden>
 
        Fix a number of subtle memory leaks. Thanks to the
diff --git a/cint_array.c b/cint_array.c
index 417f27d..d7171ac 100644
--- a/cint_array.c
+++ b/cint_array.c
@@ -175,7 +175,7 @@ cint_array_init(NODE *symbol ATTRIBUTE_UNUSED, NODE *subs 
ATTRIBUTE_UNUSED)
                if ((newval = getenv_long("NHAT")) > 1 && newval < INT32_BIT)
                        NHAT = newval;
                /* don't allow overflow off the end of the table */
-               if (NHAT >= nelems)
+               if (NHAT > nelems - 2)
                        NHAT = nelems - 2;
                THRESHOLD = power_two_table[NHAT + 1];
        } else

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog    | 6 ++++++
 cint_array.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)


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