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Diffstat (limited to 'converter/ppm/ppmtoapplevol.c')
| -rw-r--r-- | converter/ppm/ppmtoapplevol.c | 6 |
1 files changed, 5 insertions, 1 deletions
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 = |