re PR fortran/31922 ([4.2 only] Accessing uninitialized variable for print *, trim...

2007-05-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/31922
	* intrinsics/string_intrinsics.c (string_trim): Set result to null if
	string length is zero.

From-SVN: r124754

diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index dec751f9c851275474cb84577f309f18cdabe71d..531787f32896ff83577cf2137d650e0a3f9ab50a 100644 (file)
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,9 @@
+2007-05-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+       PR libfortran/31922
+       * intrinsics/string_intrinsics.c (string_trim): Set result to null if
+       string length is zero.
+
 2007-05-15  Tobias Burnus  <burnus@net-b.de>
 
        PR libfortran/31915

diff --git a/libgfortran/intrinsics/string_intrinsics.c b/libgfortran/intrinsics/string_intrinsics.c
index 1a4b1593270b84184eaf69647290c344b2005d16..7c22c16abfec2a3d967c095e8f32e0f49c6781d5 100644 (file)
--- a/libgfortran/intrinsics/string_intrinsics.c
+++ b/libgfortran/intrinsics/string_intrinsics.c
@@ -171,6 +171,8 @@ string_trim (GFC_INTEGER_4 * len, void ** dest, GFC_INTEGER_4 slen,
       /* copy string if necessary.  */
       memmove (*dest, src, *len);
     }
+  else
+    *dest = NULL;
 }