Mercurial > hg > CbC > CbC_gcc
diff libiberty/argv.c @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
---|---|
date | Fri, 12 Feb 2010 23:39:51 +0900 |
parents | a06113de4d67 |
children | f6334be47118 |
line wrap: on
line diff
--- a/libiberty/argv.c Sun Feb 07 18:28:00 2010 +0900 +++ b/libiberty/argv.c Fri Feb 12 23:39:51 2010 +0900 @@ -119,6 +119,24 @@ } } +static void +consume_whitespace (const char **input) +{ + while (ISSPACE (**input)) + { + (*input)++; + } +} + +static int +only_whitespace (const char* input) +{ + while (*input != EOS && ISSPACE (*input)) + input++; + + return (*input == EOS); +} + /* @deftypefn Extension char** buildargv (char *@var{sp}) @@ -179,10 +197,8 @@ do { /* Pick off argv[argc] */ - while (ISBLANK (*input)) - { - input++; - } + consume_whitespace (&input); + if ((maxargc == 0) || (argc >= (maxargc - 1))) { /* argv needs initialization, or expansion */ @@ -278,10 +294,7 @@ argc++; argv[argc] = NULL; - while (ISSPACE (*input)) - { - input++; - } + consume_whitespace (&input); } while (*input != EOS); } @@ -420,8 +433,17 @@ goto error; /* Add a NUL terminator. */ buffer[len] = '\0'; - /* Parse the string. */ - file_argv = buildargv (buffer); + /* If the file is empty or contains only whitespace, buildargv would + return a single empty argument. In this context we want no arguments, + instead. */ + if (only_whitespace (buffer)) + { + file_argv = (char **) xmalloc (sizeof (char *)); + file_argv[0] = NULL; + } + else + /* Parse the string. */ + file_argv = buildargv (buffer); /* If *ARGVP is not already dynamically allocated, copy it. */ if (!argv_dynamic) { @@ -434,7 +456,7 @@ } /* Count the number of arguments. */ file_argc = 0; - while (file_argv[file_argc] && *file_argv[file_argc]) + while (file_argv[file_argc]) ++file_argc; /* Now, insert FILE_ARGV into ARGV. The "+1" below handles the NULL terminator at the end of ARGV. */