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New function cli-utils.c:extract_arg_const

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This function provides the exact same functionality as extract_arg,
except that it takes a "const char**" instead of a "char **".
It allows us also to re-implement extract_arg almost as a simple
wrapper around the new function.

gdb/ChangeLog:

        Pedro Alves  <palves@redhat.com>
        Joel Brobecker  <brobecker@adacore.com>

        * cli/cli-utils.h (extract_arg_const): Add declaration.
        * cli/cli-utils.c (extract_arg_const): New function.
        (extract_arg): Reimplement using extract_arg_const.
This commit is contained in:
Joel Brobecker
2013-11-11 09:19:32 +04:00
parent 671afef641
commit b5be8ce022
3 changed files with 31 additions and 8 deletions
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7
gdb/cli/cli-utils.h
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@@ -118,6 +118,13 @@ extern char *remove_trailing_whitespace (const char *start, char *s);
extern char *extract_arg (char **arg);
/* A const-correct version of "extract_arg".
Since the returned value is xmalloc'd, it eventually needs to be
xfree'ed, which prevents us from making it const as well. */
extern char *extract_arg_const (const char **arg);
/* A helper function that looks for an argument at the start of a
string. The argument must also either be at the end of the string,
or be followed by whitespace. Returns 1 if it finds the argument,