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gcc.c (getenv_spec_function): Escape the environment variable's value.

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* gcc.c (getenv_spec_function): Escape the environment variable's
	value.

From-SVN: r129825
This commit is contained in:
Nathan Sidwell 2007-11-01 16:42:39 +00:00 committed by Nathan Sidwell
parent d6a64b9df9
commit 5557813a4e
2 changed files with 23 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-11-01 Nathan Sidwell <nathan@codesourcery.com>
* gcc.c (getenv_spec_function): Escape the environment variable's
value.
2007-11-01 Janis Johnson <janis187@us.ibm.com>
* doc/invoke.texi (Optimize Options): Under -fcse-follow-jumps,

19
gcc/gcc.c
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@ -7734,6 +7734,9 @@ static const char *
getenv_spec_function (int argc, const char **argv)
{
char *value;
char *result;
char *ptr;
size_t len;
if (argc != 2)
return NULL;
@ -7742,7 +7745,21 @@ getenv_spec_function (int argc, const char **argv)
if (!value)
fatal ("environment variable \"%s\" not defined", argv[0]);
return concat (value, argv[1], NULL);
/* We have to escape every character of the environment variable so
they are not interpretted as active spec characters. A
particulaly painful case is when we are reading a variable
holding a windows path complete with \ separators. */
len = strlen (value) * 2 + strlen (argv[1]) + 1;
result = xmalloc (len);
for (ptr = result; *value; ptr += 2)
{
ptr[0] = '\\';
ptr[1] = *value++;
}
strcpy (ptr, argv[1]);
return result;
}
/* if-exists built-in spec function.