X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fsetenv.c;h=320469b86309b0b9221e0ba80d5fb749a3441c9c;hb=e57dfac3355164cfbfcb5473a42130dab793fe9f;hp=0a28cb9fbf4870bc3db2d31db8462499d9168d05;hpb=7dd7a67c1fc5fbf657c2ffbd03c334310d368cb0;p=gnulib.git

diff --git a/lib/setenv.c b/lib/setenv.c
index 0a28cb9fb..320469b86 100644
--- a/lib/setenv.c
+++ b/lib/setenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992,1995-1999,2000-2003 Free Software Foundation, Inc.
+/* Copyright (C) 1992,1995-1999,2000-2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software; you can redistribute it and/or modify
@@ -21,10 +21,7 @@
 #include <alloca.h>
 
 #include <errno.h>
-#if !_LIBC
-# if !defined errno && !defined HAVE_ERRNO_DECL
-extern int errno;
-# endif
+#ifndef __set_errno
 # define __set_errno(ev) ((errno) = (ev))
 #endif
 
@@ -34,13 +31,8 @@ extern int errno;
 # include <unistd.h>
 #endif
 
-/* For those losing systems which don't have 'alloca' we have to add
-   some additional code emulating it.  */
-#if _LIBC || HAVE_ALLOCA
-# define freea(p) /* nothing */
-#else
-# define alloca(n) malloc (n)
-# define freea(p) free (p)
+#if !_LIBC
+# include "allocsa.h"
 #endif
 
 #if !_LIBC
@@ -163,11 +155,18 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 	{
 	  /* See whether the value is already known.  */
 #ifdef USE_TSEARCH
-	  new_value = (char *) alloca (namelen + 1 + vallen);
 # ifdef _LIBC
+	  new_value = (char *) alloca (namelen + 1 + vallen);
 	  __mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
 		     value, vallen);
 # else
+	  new_value = (char *) allocsa (namelen + 1 + vallen);
+	  if (new_value == NULL)
+	    {
+	      __set_errno (ENOMEM);
+	      UNLOCK;
+	      return -1;
+	    }
 	  memcpy (new_value, name, namelen);
 	  new_value[namelen] = '=';
 	  memcpy (&new_value[namelen + 1], value, vallen);
@@ -180,8 +179,8 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 	      new_environ[size] = (char *) malloc (namelen + 1 + vallen);
 	      if (new_environ[size] == NULL)
 		{
-#ifdef USE_TSEARCH
-		  freea (new_value);
+#if defined USE_TSEARCH && !defined _LIBC
+		  freesa (new_value);
 #endif
 		  __set_errno (ENOMEM);
 		  UNLOCK;
@@ -200,8 +199,8 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 		 user string or not.  */
 	      STORE_VALUE (new_environ[size]);
 	    }
-#ifdef USE_TSEARCH
-	  freea (new_value);
+#if defined USE_TSEARCH && !defined _LIBC
+	  freesa (new_value);
 #endif
 	}
 
@@ -223,11 +222,19 @@ __add_to_environ (const char *name, const char *value, const char *combined,
       else
 	{
 #ifdef USE_TSEARCH
-	  char *new_value = alloca (namelen + 1 + vallen);
+	  char *new_value;
 # ifdef _LIBC
+	  new_value = alloca (namelen + 1 + vallen);
 	  __mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
 		     value, vallen);
 # else
+	  new_value = allocsa (namelen + 1 + vallen);
+	  if (new_value == NULL)
+	    {
+	      __set_errno (ENOMEM);
+	      UNLOCK;
+	      return -1;
+	    }
 	  memcpy (new_value, name, namelen);
 	  new_value[namelen] = '=';
 	  memcpy (&new_value[namelen + 1], value, vallen);
@@ -240,9 +247,10 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 	      np = malloc (namelen + 1 + vallen);
 	      if (np == NULL)
 		{
-#ifdef USE_TSEARCH
-		  freea (new_value);
+#if defined USE_TSEARCH && !defined _LIBC
+		  freesa (new_value);
 #endif
+		  __set_errno (ENOMEM);
 		  UNLOCK;
 		  return -1;
 		}
@@ -257,8 +265,8 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 	      /* And remember the value.  */
 	      STORE_VALUE (np);
 	    }
-#ifdef USE_TSEARCH
-	  freea (new_value);
+#if defined USE_TSEARCH && !defined _LIBC
+	  freesa (new_value);
 #endif
 	}
 
@@ -280,7 +288,7 @@ setenv (const char *name, const char *value, int replace)
    never made it.  Nevertheless the POSIX.9 standard (POSIX bindings
    for Fortran 77) requires this function.  */
 int
-clearenv ()
+clearenv (void)
 {
   LOCK;