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(__add_to_environ): Don't let the temporary copies of the variables accumulate on the stack.
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@ -1,4 +1,4 @@
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/* Copyright (C) 1992,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
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/* Copyright (C) 1992,1995-2001,2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -134,12 +134,9 @@ __add_to_environ (name, value, combined, replace)
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++size;
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}
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if (ep == NULL || *ep == NULL)
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if (ep == NULL || __builtin_expect (*ep == NULL, 1))
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{
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char **new_environ;
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#ifdef USE_TSEARCH
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char *new_value;
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#endif
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/* We allocated this space; we can extend it. */
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new_environ = (char **) realloc (last_environ,
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@ -159,7 +156,11 @@ __add_to_environ (name, value, combined, replace)
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{
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/* See whether the value is already known. */
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#ifdef USE_TSEARCH
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new_value = (char *) alloca (namelen + 1 + vallen);
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# ifdef __GNUC__
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char new_value[namelen + 1 + vallen];
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# else
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char *new_value = (char *) alloca (namelen + 1 + vallen);
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# endif
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# ifdef _LIBC
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__mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
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value, vallen);
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@ -170,11 +171,11 @@ __add_to_environ (name, value, combined, replace)
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# endif
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new_environ[size] = KNOWN_VALUE (new_value);
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if (new_environ[size] == NULL)
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if (__builtin_expect (new_environ[size] == NULL, 1))
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#endif
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{
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new_environ[size] = (char *) malloc (namelen + 1 + vallen);
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if (new_environ[size] == NULL)
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if (__builtin_expect (new_environ[size] == NULL, 0))
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{
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__set_errno (ENOMEM);
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UNLOCK;
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@ -213,7 +214,11 @@ __add_to_environ (name, value, combined, replace)
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else
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{
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#ifdef USE_TSEARCH
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char *new_value = alloca (namelen + 1 + vallen);
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# ifdef __GNUC__
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char new_value[namelen + 1 + vallen];
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# else
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char *new_value = (char *) alloca (namelen + 1 + vallen);
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# endif
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# ifdef _LIBC
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__mempcpy (__mempcpy (__mempcpy (new_value, name, namelen), "=", 1),
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value, vallen);
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@ -224,11 +229,11 @@ __add_to_environ (name, value, combined, replace)
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# endif
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np = KNOWN_VALUE (new_value);
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if (np == NULL)
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if (__builtin_expect (np == NULL, 1))
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#endif
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{
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np = malloc (namelen + 1 + vallen);
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if (np == NULL)
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if (__builtin_expect (np == NULL, 0))
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{
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UNLOCK;
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return -1;
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