From: Bruno Haible <bruno@clisp.org>
Date: Tue, 13 Jul 2010 08:07:23 +0000 (+0200)
Subject: strtod: Add safety check.
X-Git-Tag: v0.1~4023
X-Git-Url: http://erislabs.net/gitweb/?p=gnulib.git;a=commitdiff_plain;h=911a49d5a609b5fcf803d38156eb793e864138a0

strtod: Add safety check.
---

diff --git a/ChangeLog b/ChangeLog
index 67609e96c..10d49b197 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-13  Bruno Haible  <bruno@clisp.org>
+
+	strtod: Add safety check.
+	* lib/strtod.c (ldexp): Abort if this dummy replacement gets called.
+
 2010-07-12  Bruno Haible  <bruno@clisp.org>
 
 	Unify tests that set gl_cv_func_ldexpl_no_libm.
diff --git a/lib/strtod.c b/lib/strtod.c
index 61887598c..83b858ae5 100644
--- a/lib/strtod.c
+++ b/lib/strtod.c
@@ -45,7 +45,12 @@ locale_isspace (char c)
 
 #if !HAVE_LDEXP_IN_LIBC
  #define ldexp dummy_ldexp
- static double ldexp (double x, int exponent) { return x + exponent; }
+ /* A dummy definition that will never be invoked.  */
+ static double ldexp (double x _GL_UNUSED, int exponent _GL_UNUSED)
+ {
+   abort ();
+   return 0.0;
+ }
 #endif
 
 /* Return X * BASE**EXPONENT.  Return an extreme value and set errno