From 50dd979345279716cd38d11aa3b175f09b8adbdd Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Mon, 1 Jul 2013 11:22:12 +0000 Subject: [PATCH] Constify main.c:get_init_files. A following patch will want to make the "gdbinit" global array const. As usual, that forces in a cascading series of const additions. This patch preemptively does those. I went all the way up to constifying catch_command_errors, but then that would require constifying execute_command as well (which is a much more significant effort). So as stop point, I found the cleanest would be to add a variant of catch_command_errors that takes const args, and use that in the few spots that needed it due to the the get_init_files constification. gdb/ 2013-07-01 Pedro Alves * cli/cli-cmds.c (source_script): Make 'file' parameter const. * cli/cli-cmds.h (source_script): Likewise. * exceptions.c (catch_command_errors_const): New function. * exceptions.h (catch_command_errors_const): Declare. * main.c (get_init_files): Make parameters const, and adjust. (captured_main): Make 'system_gdbinit', 'home_gdbinit' and 'local_gdbinit' locals const. Adjust to use catch_command_errors_const. (print_gdb_help): Make 'system_gdbinit', 'home_gdbinit' and 'local_gdbinit' locals const. --- gdb/ChangeLog | 13 +++++++++++++ gdb/cli/cli-cmds.c | 2 +- gdb/cli/cli-cmds.h | 2 +- gdb/exceptions.c | 16 ++++++++++++++++ gdb/exceptions.h | 6 ++++++ gdb/main.c | 40 +++++++++++++++++++++------------------- 6 files changed, 58 insertions(+), 21 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 7292d8b..7edc65a 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,18 @@ 2013-07-01 Pedro Alves + * cli/cli-cmds.c (source_script): Make 'file' parameter const. + * cli/cli-cmds.h (source_script): Likewise. + * exceptions.c (catch_command_errors_const): New function. + * exceptions.h (catch_command_errors_const): Declare. + * main.c (get_init_files): Make parameters const, and adjust. + (captured_main): Make 'system_gdbinit', 'home_gdbinit' and + 'local_gdbinit' locals const. Adjust to use + catch_command_errors_const. + (print_gdb_help): Make 'system_gdbinit', 'home_gdbinit' and + 'local_gdbinit' locals const. + +2013-07-01 Pedro Alves + * defs.h: Don't check HAVE_UNISTD_H before including . (STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO): Delete. * tracepoint.c: Don't check HAVE_UNISTD_H before including diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c index 6ee7673..bd2ca2d 100644 --- a/gdb/cli/cli-cmds.c +++ b/gdb/cli/cli-cmds.c @@ -597,7 +597,7 @@ source_script_with_search (const char *file, int from_tty, int search_path) for use in loading .gdbinit scripts. */ void -source_script (char *file, int from_tty) +source_script (const char *file, int from_tty) { source_script_with_search (file, from_tty, 0); } diff --git a/gdb/cli/cli-cmds.h b/gdb/cli/cli-cmds.h index 9f6977c..34fe445 100644 --- a/gdb/cli/cli-cmds.h +++ b/gdb/cli/cli-cmds.h @@ -117,7 +117,7 @@ extern void cd_command (char *, int); extern void quit_command (char *, int); -extern void source_script (char *, int); +extern void source_script (const char *, int); /* Exported to objfiles.c. */ diff --git a/gdb/exceptions.c b/gdb/exceptions.c index 0cdd16b..416d81d 100644 --- a/gdb/exceptions.c +++ b/gdb/exceptions.c @@ -577,3 +577,19 @@ catch_command_errors (catch_command_errors_ftype *command, return 0; return 1; } + +int +catch_command_errors_const (catch_command_errors_const_ftype *command, + const char *arg, int from_tty, return_mask mask) +{ + volatile struct gdb_exception e; + + TRY_CATCH (e, mask) + { + command (arg, from_tty); + } + print_any_exception (gdb_stderr, NULL, e); + if (e.reason < 0) + return 0; + return 1; +} diff --git a/gdb/exceptions.h b/gdb/exceptions.h index 7e3be95..19eacd3 100644 --- a/gdb/exceptions.h +++ b/gdb/exceptions.h @@ -257,4 +257,10 @@ typedef void (catch_command_errors_ftype) (char *, int); extern int catch_command_errors (catch_command_errors_ftype *func, char *arg, int from_tty, return_mask); +/* Like catch_command_errors, but works with const command and args. */ + +typedef void (catch_command_errors_const_ftype) (const char *, int); +extern int catch_command_errors_const (catch_command_errors_const_ftype *func, + const char *arg, int from_tty, return_mask); + #endif diff --git a/gdb/main.c b/gdb/main.c index 3c1ef75..a0930ee 100644 --- a/gdb/main.c +++ b/gdb/main.c @@ -160,13 +160,13 @@ relocate_gdb_directory (const char *initial, int flag) to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and LOCAL_GDBINIT) is set to NULL. */ static void -get_init_files (char **system_gdbinit, - char **home_gdbinit, - char **local_gdbinit) +get_init_files (const char **system_gdbinit, + const char **home_gdbinit, + const char **local_gdbinit) { - static char *sysgdbinit = NULL; + static const char *sysgdbinit = NULL; static char *homeinit = NULL; - static char *localinit = NULL; + static const char *localinit = NULL; static int initialized = 0; if (!initialized) @@ -336,9 +336,9 @@ captured_main (void *data) int ndir; /* gdb init files. */ - char *system_gdbinit; - char *home_gdbinit; - char *local_gdbinit; + const char *system_gdbinit; + const char *home_gdbinit; + const char *local_gdbinit; int i; int save_auto_load; @@ -894,7 +894,8 @@ captured_main (void *data) processed; it sets global parameters, which are independent of what file you are debugging or what directory you are in. */ if (system_gdbinit && !inhibit_gdbinit) - catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL); + catch_command_errors_const (source_script, system_gdbinit, + 0, RETURN_MASK_ALL); /* Read and execute $HOME/.gdbinit file, if it exists. This is done *before* all the command line arguments are processed; it sets @@ -902,15 +903,16 @@ captured_main (void *data) debugging or what directory you are in. */ if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit) - catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL); + catch_command_errors_const (source_script, + home_gdbinit, 0, RETURN_MASK_ALL); /* Process '-ix' and '-iex' options early. */ for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++) switch (cmdarg_p->type) { case CMDARG_INIT_FILE: - catch_command_errors (source_script, cmdarg_p->string, - !batch_flag, RETURN_MASK_ALL); + catch_command_errors_const (source_script, cmdarg_p->string, + !batch_flag, RETURN_MASK_ALL); break; case CMDARG_INIT_COMMAND: catch_command_errors (execute_command, cmdarg_p->string, @@ -1006,8 +1008,8 @@ captured_main (void *data) { auto_load_local_gdbinit_loaded = 1; - catch_command_errors (source_script, local_gdbinit, 0, - RETURN_MASK_ALL); + catch_command_errors_const (source_script, local_gdbinit, 0, + RETURN_MASK_ALL); } } @@ -1024,8 +1026,8 @@ captured_main (void *data) switch (cmdarg_p->type) { case CMDARG_FILE: - catch_command_errors (source_script, cmdarg_p->string, - !batch_flag, RETURN_MASK_ALL); + catch_command_errors_const (source_script, cmdarg_p->string, + !batch_flag, RETURN_MASK_ALL); break; case CMDARG_COMMAND: catch_command_errors (execute_command, cmdarg_p->string, @@ -1075,9 +1077,9 @@ gdb_main (struct captured_main_args *args) static void print_gdb_help (struct ui_file *stream) { - char *system_gdbinit; - char *home_gdbinit; - char *local_gdbinit; + const char *system_gdbinit; + const char *home_gdbinit; + const char *local_gdbinit; get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); -- 2.7.4