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authorgiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2008-05-10 18:58:29 +0000
committergiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2008-05-10 18:58:29 +0000
commit17d018d54f9df84ef4a1b3624696bb231e590b93 (patch)
treef6fbd606840b308a07bd504c48991943c9da674d /generator
parent659c785abe7b5a2d50e5474f40c6692fc7a749bf (diff)
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handle empty input
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@618 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'generator')
-rw-r--r--generator/pbmtext.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/generator/pbmtext.c b/generator/pbmtext.c
index 251f051a..40423db9 100644
--- a/generator/pbmtext.c
+++ b/generator/pbmtext.c
@@ -823,7 +823,11 @@ main(int argc, char *argv[]) {
 
     computeImageWidth(formattedText, fontP, cmdline.space, hmargin,
                       &cols, &maxleftb);
-                        
+
+    if (cols == 0 || rows == 0)
+        pm_error("Input is all whitespace and/or non-renderable characters.  "
+                 "No output.");
+
     bits = pbm_allocarray(cols, rows);
 
     /* Fill background with white */