* calls.c (special_function_p): Remove `realloc' and add `strdup'

        to the list of functions which have attribute malloc by default.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30731 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e0a454b..598369f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 1999-11-30  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
+       * calls.c (special_function_p): Remove `realloc' and add `strdup'
+       to the list of functions which have attribute malloc by default.
+
+1999-11-30  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
        * c-lex.c (yylex): With -Wtraditional, when the ANSI type of an
        integer constant does not match the traditional type, limit the
        warnings to cases where the base of the type is ten.

diff --git a/gcc/calls.c b/gcc/calls.c
index d880595..361c8b7 100644 (file)
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -607,10 +607,12 @@ special_function_p (name, fndecl, returns_twice, is_longjmp,
               && ! strcmp (tname, "longjmp"))
        *is_longjmp = 1;
       /* Do not add any more malloc-like functions to this list,
-        instead mark as malloc functions using the malloc attribute.  */
+         instead mark them as malloc functions using the malloc attribute.
+         Note, realloc is not suitable for attribute malloc since
+         it may return the same address across multiple calls. */
       else if (! strcmp (tname, "malloc")
               || ! strcmp (tname, "calloc")
-              || ! strcmp (tname, "realloc")
+              || ! strcmp (tname, "strdup")
               /* Note use of NAME rather than TNAME here.  These functions
                  are only reserved when preceded with __.  */
               || ! strcmp (name, "__vn")       /* mangled __builtin_vec_new */