05-15-2002
Overwriting the arguments like you show in your first use of strcat is illegal too, even if the compiler doesn't catch and your cpu succeeds in running the resulting code.
Your second example of strcat is so bizarre that I'm not sure what to think. My best guess is that dup is an array of characters. If so, try strcat(dup, ".bat");
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xstr(1) General Commands Manual xstr(1)
NAME
xstr - extract strings from C programs to implement shared strings
SYNOPSIS
[file]
DESCRIPTION
maintains a file into which strings in component parts of a large program are hashed. These strings are replaced with references to this
common area. This serves to implement shared constant strings, which are most useful if they are also read-only.
The command:
extracts the strings from the C source in name, replacing string references with expressions of the form for some number. An appropriate
declaration of is placed at the beginning of the file. The resulting C text is placed in the file for subsequent compiling. The strings
from this file are placed in the database if they are not there already. Repeated strings and strings that are suffixes of existing
strings do not cause changes to the data base.
After all components of a large program have been compiled, a file declaring the common space, can be created by the command:
This file should then be compiled and loaded with the rest of the program. If possible, the array can be made read-only (shared), saving
space and swap overhead.
can also be used on a single file. A command:
creates files and as before, without using or affecting any file in the same directory.
It may be useful to run after the C preprocessor if any macro definitions yield strings or if there is conditional code containing strings
that are not, in fact, needed. reads from its standard input when the argument is given. An appropriate command sequence for running
after the C preprocessor is:
does not touch the file unless new items are added, thus can avoid remaking unless truly necessary (see make(1)).
WARNINGS
If a string is a suffix of another string in the data base, but the shorter string is seen first by both strings are placed in the data
base, when placing only the longer one there would be sufficient.
AUTHOR
was developed by the University of California, Berkeley.
FILES
Data base of strings
Massaged C source
C source for definition of array
Temp file when `xstr name' does not touch
SEE ALSO
mkstr(1).
xstr(1)