[Guile-commits] GNU Guile branch, master, updated. release_1-9-2-159-g060e305

[Michael Gran]

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http://git.savannah.gnu.org/cgit/guile.git/commit/?id=060e305adcb5a80dba8bf137dc3d61151d1c0dff

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- Log -----------------------------------------------------------------
commit 060e305adcb5a80dba8bf137dc3d61151d1c0dff
Author: Michael Gran <address@hidden>
Date:   Sat Sep 5 11:10:07 2009 -0700

    Avoid string buffer overrun in scm_scan_for_encoding
    
    * libguile/read.c (scm_scan_for_encoding): possible overrun if
      coding declaration is at end of file

-----------------------------------------------------------------------

Summary of changes:
 libguile/read.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/libguile/read.c b/libguile/read.c
index 269e96b..07c8d71 100644
--- a/libguile/read.c
+++ b/libguile/read.c
@@ -1446,6 +1446,7 @@ scm_scan_for_encoding (SCM port)
   /* grab the next token */
   i = 0;
   while (pos + i - header <= SCM_ENCODING_SEARCH_SIZE 
+         && pos + i - header < bytes_read
         && (isalnum((int) pos[i]) || pos[i] == '_' || pos[i] == '-' 
              || pos[i] == '.'))
     i++;


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