ID Number: Q50714
5.00 5.10 6.00 6.00a 6.00ax 7.00
MS-DOS
Summary:
SYMPTOMS
In Microsoft C versions 5.0, 5.1, 6.0, 6.0a, 6.0ax, and C/C++
version 7.0, the following error message may be generated:
R6009: Not Enough Space For Environment
CAUSE
The "R6009: Not Enough Space For Environment" run-time error is
caused when a program successfully loads into memory and then
attempts to load a copy of the environment and the argument list
into the near heap. If the near heap does not have enough room for
one, the other, or both, R6009 is generated.
RESOLUTION
The following are four ways to work around the problem:
1. Lower the amount of environment space with the following
statement in the CONFIG.SYS file. This assumes that environment
space is being allocated.
shell=command.com /p /e:xxxx
-or-
2. When compiling, use the large memory model in conjunction with
the /Gt switch to get some of the global data out of DGROUP,
thus freeing up room for the environment and/or the argument
list. (/Gt3 is a good place to start.)
-or-
3. If there is no need for command-line arguments, _setargv() can
be rewritten as follows:
_setargv() {}
-or-
4. If there is no need for a copy of the environment, and if the
spawn or exec functionality is not needed, _setenvp() can be
rewritten as follows:
_setenvp() {}
More Information:
In standard Microsoft C programs, the functions _setargv() and
_setenvp() attempt to set up the argument vector and the environment
vector, respectively. Both of these vectors are allocated in the near
heap. If the program has a full or nearly full near heap, the vectors
will not be set up, thereby giving the error.
Additional reference words: 5.00 5.10 6.00 6.00a 6.00ax 7.00 s_quickc