diff --git a/src/bmpio.c b/src/bmpio.c
index 6da03d98e..b3c6bb5a6 100644
--- a/src/bmpio.c
+++ b/src/bmpio.c
@@ -550,7 +550,7 @@ RGBA_QUAD  *pquad;
             ncolors = 2;
             cta = (l_uint8 *)bwmap;
         } else {   /* d = 2,4,8; use a grayscale output colormap */
-            ncolors = 1 << fdepth;
+            ncolors = 1 << d;
             cmaplen = ncolors * sizeof(RGBA_QUAD);
             heapcm = 1;
             cta = (l_uint8 *)LEPT_CALLOC(cmaplen, 1);
diff --git a/src/boxbasic.c b/src/boxbasic.c
index cbb485909..aaffbb16c 100644
--- a/src/boxbasic.c
+++ b/src/boxbasic.c
@@ -1954,7 +1954,7 @@ FILE    *fp;
     ret = boxaaWriteStream(fp, baa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -2235,7 +2235,7 @@ FILE    *fp;
     ret = boxaWriteStream(fp, boxa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/colormap.c b/src/colormap.c
index f0a00c1a2..9533fe688 100644
--- a/src/colormap.c
+++ b/src/colormap.c
@@ -1948,7 +1948,7 @@ FILE    *fp;
     ret = pixcmapWriteStream(fp, cmap);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/dewarp1.c b/src/dewarp1.c
index 9013681cf..aa5e31319 100644
--- a/src/dewarp1.c
+++ b/src/dewarp1.c
@@ -1385,7 +1385,7 @@ FILE    *fp;
     ret = dewarpWriteStream(fp, dew);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -1656,7 +1656,7 @@ FILE    *fp;
     ret = dewarpaWriteStream(fp, dewa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/dnabasic.c b/src/dnabasic.c
index 1c19b556c..47b305779 100644
--- a/src/dnabasic.c
+++ b/src/dnabasic.c
@@ -1153,7 +1153,7 @@ FILE    *fp;
     ret = l_dnaWriteStream(fp, da);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -1787,7 +1787,7 @@ FILE    *fp;
     ret = l_dnaaWriteStream(fp, daa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/fpix1.c b/src/fpix1.c
index f5649c7a5..e0616fa18 100644
--- a/src/fpix1.c
+++ b/src/fpix1.c
@@ -1557,7 +1557,7 @@ FILE    *fp;
     ret = fpixWriteStream(fp, fpix);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/jpegio.c b/src/jpegio.c
index ab374117d..02b2a0b3c 100644
--- a/src/jpegio.c
+++ b/src/jpegio.c
@@ -1133,7 +1133,7 @@ FILE    *fp;
     ret = pixWriteStreamJpeg(fp, pix, quality, progressive);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/numabasic.c b/src/numabasic.c
index efc5c0af9..5138f987b 100644
--- a/src/numabasic.c
+++ b/src/numabasic.c
@@ -1273,7 +1273,7 @@ FILE    *fp;
     ret = numaWriteStream(fp, na);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -1946,7 +1946,7 @@ FILE    *fp;
     ret = numaaWriteStream(fp, naa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/pix2.c b/src/pix2.c
index 8d28db99c..487cebf7e 100644
--- a/src/pix2.c
+++ b/src/pix2.c
@@ -720,7 +720,7 @@ pixGetBlackOrWhiteVal(PIX       *pixs,
                       l_int32    op,
                       l_uint32  *pval)
 {
-l_int32   d, val;
+l_int32   d, index;
 PIXCMAP  *cmap;
 
     if (!pval)
@@ -736,17 +736,17 @@ PIXCMAP  *cmap;
     if (!cmap) {
         if ((d == 1 && op == L_GET_WHITE_VAL) ||
             (d > 1 && op == L_GET_BLACK_VAL)) {  /* min val */
-            val = 0;
+            *pval = 0;
         } else {  /* max val */
-            val = (d == 32) ? 0xffffff00 : (1 << d) - 1;
+            *pval = (d == 32) ? 0xffffff00 : (1 << d) - 1;
         }
     } else {  /* handle colormap */
         if (op == L_GET_BLACK_VAL)
-            pixcmapAddBlackOrWhite(cmap, 0, &val);
+            pixcmapAddBlackOrWhite(cmap, 0, &index);
         else  /* L_GET_WHITE_VAL */
-            pixcmapAddBlackOrWhite(cmap, 1, &val);
+            pixcmapAddBlackOrWhite(cmap, 1, &index);
+        *pval = index;
     }
-    *pval = val;
 
     return 0;
 }
@@ -1164,7 +1164,8 @@ pixSetInRectArbitrary(PIX      *pix,
                       BOX      *box,
                       l_uint32  val)
 {
-l_int32    n, x, y, xstart, xend, ystart, yend, bw, bh, w, h, d, wpl, maxval;
+l_int32    n, x, y, xstart, xend, ystart, yend, bw, bh, w, h, d, wpl;
+l_uint32   maxval;
 l_uint32  *data, *line;
 BOX       *boxc;
 PIXCMAP   *cmap;
@@ -1879,8 +1880,9 @@ pixAddBorderGeneral(PIX      *pixs,
                     l_int32   bot,
                     l_uint32  val)
 {
-l_int32  ws, hs, wd, hd, d, maxval, op;
-PIX     *pixd;
+l_int32   ws, hs, wd, hd, d, op;
+l_uint32  maxval;
+PIX      *pixd;
 
     if (!pixs)
         return (PIX *)ERROR_PTR("pixs not defined", __func__, NULL);
diff --git a/src/pixabasic.c b/src/pixabasic.c
index 8855e9fd9..97d28ca60 100644
--- a/src/pixabasic.c
+++ b/src/pixabasic.c
@@ -2744,7 +2744,7 @@ FILE    *fp;
     ret = pixaWriteStream(fp, pixa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -3114,7 +3114,7 @@ FILE    *fp;
     ret = pixaaWriteStream(fp, paa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/pixcomp.c b/src/pixcomp.c
index 98c8e730d..5ec4ba644 100644
--- a/src/pixcomp.c
+++ b/src/pixcomp.c
@@ -1868,7 +1868,7 @@ FILE    *fp;
     ret = pixacompWriteStream(fp, pixac);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/pnmio.c b/src/pnmio.c
index c3e2831c9..cb3a49cfd 100644
--- a/src/pnmio.c
+++ b/src/pnmio.c
@@ -1237,7 +1237,7 @@ FILE    *fp;
     ret = pixWriteStreamPnm(fp, pix);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -1293,7 +1293,7 @@ FILE    *fp;
     ret = pixWriteStreamPam(fp, pix);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/ptabasic.c b/src/ptabasic.c
index 3e9a0fe13..c4ea159f1 100644
--- a/src/ptabasic.c
+++ b/src/ptabasic.c
@@ -874,7 +874,7 @@ FILE    *fp;
     ret = ptaWriteStream(fp, pta, type);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
@@ -1492,7 +1492,7 @@ FILE    *fp;
     ret = ptaaWriteStream(fp, ptaa, type);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/recogbasic.c b/src/recogbasic.c
index a6a4b6b09..5290735d8 100644
--- a/src/recogbasic.c
+++ b/src/recogbasic.c
@@ -1054,7 +1054,7 @@ FILE    *fp;
     ret = recogWriteStream(fp, recog);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/src/sarray1.c b/src/sarray1.c
index ba5719a99..5436c063c 100644
--- a/src/sarray1.c
+++ b/src/sarray1.c
@@ -1598,7 +1598,7 @@ FILE    *fp;
     ret = sarrayWriteStream(fp, sa);
     fputc('\0', fp);
     fclose(fp);
-    *psize = *psize - 1;
+    if (*psize > 0) *psize = *psize - 1;
 #else
     L_INFO("no fmemopen API --> work-around: write to temp file\n", __func__);
   #ifdef _WIN32
diff --git a/version-notes.html b/version-notes.html
index 3701777e3..69143f2f0 100644
--- a/version-notes.html
+++ b/version-notes.html
@@ -108,12 +108,15 @@ <h2 align=center>  <IMG SRC="moller52.jpg" border=1 ALIGN_MIDDLE> </h2>
           a specified resolution.
         * Modified cleanpdf.c to use l_pdfRenderFiles().
         * Source files changed: adaptmap.c affinecompose.c,
-          colormap.c, compare.c,
+          bmpio.c, boxbasic.c, colormap.c, compare.c,
+          dewarp1.c, dnabasic.c, fpix1.c,
           gplot.c, grayquant.c, jbclass.c, jp2kheader.c,
-          jp2kheaderstub.c, jp2kio.c, libversions.c,
-          morphseq.c, pageseg.c partify.c, pdfapp.c, pdfio2.c, pixconv.c,
-          psio2.c, readfile.c, renderpdf.c,
-          sel1.c, utils2.c, writefile.c,
+          jp2kheaderstub.c, jp2kio.c, jpegio.c, libversions.c,
+          morphseq.c, numabasic.c, pageseg.c partify.c, pdfapp.c,
+          pdfio2.c, pix2.c, pixabasic.c, pixcomp.c, pixconv.c,
+          pnmio.c, psio2.c, ptabasic.c,
+          readfile.c, recogbasic.c, renderpdf.c,
+          sarray1.c, sel1.c, utils2.c, writefile.c,
           allheaders.h, environ.h
         * Prog files changed: alltests_reg.c, binmorph3_reg.c,
           blend2_reg.c, cleanpdf.c, compressedpdf.c, croppdf.c,