3 files changed, 9 insertions, 4 deletions
diff --git a/converter/ppm/picttoppm.c b/converter/ppm/picttoppm.c
index 1a833b33..f5fbd7be 100644
--- a/converter/ppm/picttoppm.c
+++ b/converter/ppm/picttoppm.c
@@ -1273,7 +1273,7 @@ doDiffSize(struct Rect       const clipsrc,
     }
     break;
     case 32: {
-        unsigned int const planeSize = srcwid / 4;
+        unsigned int const planeSize = rectwidth(&srcRect);
         unsigned int rowNumber;
         
         for (rowNumber = 0; rowNumber < ysize; ++rowNumber) {
@@ -1443,7 +1443,7 @@ doSameSize(transfer_func           trf,
         }
     } break;
     case 32: {
-        unsigned int const planeSize = srcwid / 4;
+        unsigned int const planeSize = xsize;
         unsigned int rowNumber;
 
         for (rowNumber = 0; rowNumber < ysize; ++rowNumber) {
@@ -1526,7 +1526,7 @@ blitIdempotent(unsigned int          const pixSize,
         }
     } break;
     case 32: {
-        unsigned int const planeSize = srcwid / 4;
+        unsigned int const planeSize = xsize;
         unsigned int rowNumber;
 
         for (rowNumber = 0; rowNumber < ysize; ++rowNumber) {
diff --git a/converter/ppm/ppmtoapplevol.c b/converter/ppm/ppmtoapplevol.c
index e1c7f2dc..eb4b6b2a 100644
--- a/converter/ppm/ppmtoapplevol.c
+++ b/converter/ppm/ppmtoapplevol.c
@@ -68,6 +68,10 @@ main (int argc, const char * argv[]) {
     if (rows != 12)
         pm_error("Input image must be 12 rows tall.  Yours is %u", rows);
 
+    if (cols > 255)
+        pm_error("Input image must not be more than 255 columns wide."
+                 "  Yours is %u", cols);
+
     writeHeader(cols, stdout);
 
     pixelrow = ppm_allocrow(cols);
@@ -75,7 +79,7 @@ main (int argc, const char * argv[]) {
     for (row = 0; row < rows; row++) {
         unsigned int col;
         
-        ppm_readppmrow(stdin, pixelrow, cols, maxval, format);
+        ppm_readppmrow(ifP, pixelrow, cols, maxval, format);
 
         for (col = 0; col < cols; ++col) {
             unsigned int const maxval15Value =
diff --git a/converter/ppm/ppmtoilbm.c b/converter/ppm/ppmtoilbm.c
index 595aa3f4..c5fa4d00 100644
--- a/converter/ppm/ppmtoilbm.c
+++ b/converter/ppm/ppmtoilbm.c
@@ -2274,6 +2274,7 @@ main(int argc, char ** argv) {
         if (colors == 0)
             pm_error("empty colormap??");
         pm_message("%d colors found in colormap", colors);
+        nPlanes = pm_maxvaltobits(colors-1);
     }
 
     if (maskmethod != mskNone) {