Expand headroom for preventing arithmetic overflow from 2 to 10, to allow for rounding up to a multiple of 8 in bitmap computations

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4155 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/libpm.c b/lib/libpm.c
index 6f9dea3d..78d941fa 100644
--- a/lib/libpm.c
+++ b/lib/libpm.c
@@ -844,6 +844,9 @@ pm_parse_width(const char * const arg) {
    Return the image width represented by the decimal ASCIIZ string
    'arg'.  Fail if it doesn't validly represent a width or represents
    a width that can't be conveniently used in computation.
+
+   See comments at 'validateComputableSize' in libpam.c for details on
+   the purpose of these validations.
 -----------------------------------------------------------------------------*/
     unsigned int width;
     const char * error;