[PATCH] docs: fix minor typo

[Fernando Carrijo]

Signed-off-by: Fernando Carrijo <address@hidden>
---
This is my first email to autoconf-patches list, so things may not be
formatted exactly as you guys are used to. If that's the case, please
let me know and I'll respin this fix.

Thanks.

 ChangeLog         |    7 +++++++
 doc/autoconf.texi |    2 +-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5a2715c..af23064 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-09-12  Fernando Carrijo  <address@hidden>
+
+       docs: fix minor typo
+       * doc/autoconf.texi (Buffer Overruns and Subscript Errors): Fix
+       usage of TeX superscript notation to correctly represent number
+       exponent.
+
 2010-09-12  Ralf Wildenhues  <address@hidden>
 
        doc: minor indexing update.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index e068ff7..ebccb05 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -20563,7 +20563,7 @@ more subtle ways to get them.
 
 Using @code{int} values to index into an array or compute array sizes
 causes problems on typical 64-bit hosts where an array index might
-be @math{2^31} or larger.  Index values of type @code{size_t} avoid this
+be @math{2^{31}} or larger.  Index values of type @code{size_t} avoid this
 problem, but cannot be negative.  Index values of type @code{ptrdiff_t}
 are signed, and are wide enough in practice.
 
-- 
1.7.0.4