X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fgcc.c;h=3bfdf77b401939320137e4ae545aed0ea285cee3;hb=7b56081a687b3949086fe37b26a825c7567630bf;hp=a0343fa684b1e8eb452cdd7f7ceac73695ea4298;hpb=e440a3286bc89368b8d3a8fd6accd47191790bf2;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/gcc.c b/gcc/gcc.c index a0343fa684b..3bfdf77b401 100644 --- a/gcc/gcc.c +++ b/gcc/gcc.c @@ -1,7 +1,7 @@ /* Compiler driver program that can handle many languages. Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, - 2010 + 2010, 2011 Free Software Foundation, Inc. This file is part of GCC. @@ -43,7 +43,9 @@ compilation is specified by a string called a "spec". */ #include "diagnostic.h" #include "flags.h" #include "opts.h" +#include "params.h" #include "vec.h" +#include "filenames.h" /* By default there is no special suffix for target executables. */ /* FIXME: when autoconf is fixed, remove the host check - dj */ @@ -390,6 +392,7 @@ or with constant text in a single argument. Note - this command is position dependent. % commands in the spec string before this one will see -S, % commands in the spec string after this one will not. + %>S Similar to "% 0 +/* The linker used has full plugin support, use LTO plugin by default. */ +#if HAVE_LTO_PLUGIN == 2 +#define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin" +#define PLUGIN_COND_CLOSE "}" +#else +/* The linker used has limited plugin support, use LTO plugin with explicit + -fuse-linker-plugin. */ +#define PLUGIN_COND "fuse-linker-plugin" +#define PLUGIN_COND_CLOSE "" +#endif +#define LINK_PLUGIN_SPEC \ + "%{"PLUGIN_COND": \ + -plugin %(linker_plugin_file) \ + -plugin-opt=%(lto_wrapper) \ + -plugin-opt=-fresolution=%u.res \ + %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ + }"PLUGIN_COND_CLOSE +#else +/* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ +#define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ + %e-fuse-linker-plugin is not supported in this configuration}" +#endif + /* -u* was put back because both BSD and SysV seem to support it. */ /* %{static:} simply prevents an error message if the target machine @@ -629,26 +663,22 @@ proper position among the other output files. */ directories. */ /* We pass any -flto flags on to the linker, which is expected to understand them. In practice, this means it had better be collect2. */ +/* %{e*} includes -export-dynamic; see comment in common.opt. */ #ifndef LINK_COMMAND_SPEC #define LINK_COMMAND_SPEC "\ %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ - %(linker) \ - %{fuse-linker-plugin: \ - -plugin %(linker_plugin_file) \ - -plugin-opt=%(lto_wrapper) \ - -plugin-opt=-fresolution=%u.res \ - %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ - } \ - %{flto*:%next) - if (! strcmp (name, temp->name)) + if (! filename_cmp (name, temp->name)) goto already1; temp = XNEW (struct temp_file); @@ -1934,7 +1978,7 @@ record_temp_file (const char *filename, int always_delete, int fail_delete) { struct temp_file *temp; for (temp = failure_delete_queue; temp; temp = temp->next) - if (! strcmp (name, temp->name)) + if (! filename_cmp (name, temp->name)) goto already2; temp = XNEW (struct temp_file); @@ -2521,13 +2565,20 @@ execute (void) } fputc ('"', stderr); } + /* If it's empty, print "". */ + else if (!**j) + fprintf (stderr, " \"\""); else fprintf (stderr, " %s", *j); } } else for (j = commands[i].argv; *j; j++) - fprintf (stderr, " %s", *j); + /* If it's empty, print "". */ + if (!**j) + fprintf (stderr, " \"\""); + else + fprintf (stderr, " %s", *j); /* Print a pipe symbol after all but the last command. */ if (i + 1 != n_commands) @@ -2743,10 +2794,11 @@ execute (void) The `validated' field is nonzero if any spec has looked at this switch; if it remains zero at the end of the run, it must be meaningless. */ -#define SWITCH_LIVE 0x1 -#define SWITCH_FALSE 0x2 -#define SWITCH_IGNORE 0x4 -#define SWITCH_IGNORE_PERMANENTLY 0x8 +#define SWITCH_LIVE (1 << 0) +#define SWITCH_FALSE (1 << 1) +#define SWITCH_IGNORE (1 << 2) +#define SWITCH_IGNORE_PERMANENTLY (1 << 3) +#define SWITCH_KEEP_FOR_GCC (1 << 4) struct switchstr { @@ -3042,16 +3094,24 @@ save_switch (const char *opt, size_t n_args, const char *const *args, } /* Handle an option DECODED that is unknown to the option-processing - machinery, but may be known to specs. */ + machinery. */ static bool driver_unknown_option_callback (const struct cl_decoded_option *decoded) { - save_switch (decoded->canonical_option[0], - decoded->canonical_option_num_elements - 1, - &decoded->canonical_option[1], false); - - return false; + const char *opt = decoded->arg; + if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' + && !(decoded->errors & CL_ERR_NEGATIVE)) + { + /* Leave unknown -Wno-* options for the compiler proper, to be + diagnosed only if there are warnings. */ + save_switch (decoded->canonical_option[0], + decoded->canonical_option_num_elements - 1, + &decoded->canonical_option[1], false); + return false; + } + else + return true; } /* Handle an option DECODED that is not marked as CL_DRIVER. @@ -3068,11 +3128,13 @@ driver_wrong_lang_callback (const struct cl_decoded_option *decoded, options. */ const struct cl_option *option = &cl_options[decoded->opt_index]; - if (option->flags & CL_REJECT_DRIVER) + if (option->cl_reject_driver) error ("unrecognized command line option %qs", decoded->orig_option_with_args_text); else - driver_unknown_option_callback (decoded); + save_switch (decoded->canonical_option[0], + decoded->canonical_option_num_elements - 1, + &decoded->canonical_option[1], false); } /* Note that an option (index OPT_INDEX, argument ARG, value VALUE) @@ -3217,7 +3279,7 @@ driver_handle_option (struct gcc_options *opts, compare_debug_with_arg: gcc_assert (decoded->canonical_option_num_elements == 1); gcc_assert (arg != NULL); - if (arg) + if (*arg) compare_debug = 1; else compare_debug = -1; @@ -3313,6 +3375,11 @@ driver_handle_option (struct gcc_options *opts, save_switch (concat ("-L", arg, NULL), 0, NULL, validated); return true; + case OPT_F: + /* Likewise -F. */ + save_switch (concat ("-F", arg, NULL), 0, NULL, validated); + return true; + case OPT_save_temps: save_temps_flag = SAVE_TEMPS_CWD; validated = true; @@ -3467,9 +3534,13 @@ set_option_handlers (struct cl_option_handlers *handlers) handlers->unknown_option_callback = driver_unknown_option_callback; handlers->wrong_lang_callback = driver_wrong_lang_callback; handlers->post_handling_callback = driver_post_handling_callback; - handlers->num_handlers = 1; + handlers->num_handlers = 3; handlers->handlers[0].handler = driver_handle_option; handlers->handlers[0].mask = CL_DRIVER; + handlers->handlers[1].handler = common_handle_option; + handlers->handlers[1].mask = CL_COMMON; + handlers->handlers[2].handler = target_handle_option; + handlers->handlers[2].mask = CL_TARGET; } /* Create the vector `switches' and its contents. @@ -3576,9 +3647,9 @@ process_command (unsigned int decoded_options_count, { temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; if (IS_DIR_SEPARATOR (*temp) - && strncmp (temp + 1, "lib", 3) == 0 + && filename_ncmp (temp + 1, "lib", 3) == 0 && IS_DIR_SEPARATOR (temp[4]) - && strncmp (temp + 5, "gcc", 3) == 0) + && filename_ncmp (temp + 5, "gcc", 3) == 0) len -= sizeof ("/lib/gcc/") - 1; } @@ -3926,7 +3997,9 @@ set_collect_gcc_options (void) first_time = FALSE; /* Ignore elided switches. */ - if ((switches[i].live_cond & SWITCH_IGNORE) != 0) + if ((switches[i].live_cond + & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) + == SWITCH_IGNORE) continue; obstack_grow (&collect_obstack, "'-", 2); @@ -4398,6 +4471,10 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) int i; int value; + /* If it's an empty string argument to a switch, keep it as is. */ + if (inswitch && !*p) + arg_going = 1; + while ((c = *p++)) /* If substituting a switch, treat all chars like letters. Otherwise, NL, SPC, TAB and % are special. */ @@ -4670,7 +4747,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) tmp[basename_length + suffix_length] = '\0'; temp_filename = tmp; - if (strcmp (temp_filename, gcc_input_filename) != 0) + if (filename_cmp (temp_filename, gcc_input_filename) != 0) { #ifndef HOST_LACKS_INODE_NUMBERS struct stat st_temp; @@ -4696,7 +4773,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) /* Just compare canonical pathnames. */ char* input_realname = lrealpath (gcc_input_filename); char* temp_realname = lrealpath (temp_filename); - bool files_differ = strcmp (input_realname, temp_realname); + bool files_differ = filename_cmp (input_realname, temp_realname); free (input_realname); free (temp_realname); if (files_differ) @@ -4746,8 +4823,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) t->filename_length = temp_filename_length; } - if (saved_suffix) - free (saved_suffix); + free (saved_suffix); obstack_grow (&obstack, t->filename, t->filename_length); delete_this_arg = 1; @@ -5091,10 +5167,17 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) /* Henceforth ignore the option(s) matching the pattern after the %<. */ case '<': + case '>': { unsigned len = 0; int have_wildcard = 0; int i; + int switch_option; + + if (c == '>') + switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; + else + switch_option = SWITCH_IGNORE; while (p[len] && p[len] != ' ' && p[len] != '\t') len++; @@ -5106,7 +5189,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) if (!strncmp (switches[i].part1, p, len - have_wildcard) && (have_wildcard || switches[i].part1[len] == '\0')) { - switches[i].live_cond |= SWITCH_IGNORE; + switches[i].live_cond |= switch_option; switches[i].validated = 1; } @@ -5117,7 +5200,8 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) case '*': if (soft_matched_part) { - do_spec_1 (soft_matched_part, 1, NULL); + if (soft_matched_part[0]) + do_spec_1 (soft_matched_part, 1, NULL); do_spec_1 (" ", 0, NULL); } else @@ -5129,11 +5213,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) /* Process a string found as the value of a spec given by name. This feature allows individual machine descriptions - to add and use their own specs. - %[...] modifies -D options the way %P does; - %(...) uses the spec unmodified. */ - case '[': - warning (0, "use of obsolete %%[ operator in specs"); + to add and use their own specs. */ case '(': { const char *name = p; @@ -5142,7 +5222,7 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) /* The string after the S/P is the name of a spec that is to be processed. */ - while (*p && *p != ')' && *p != ']') + while (*p && *p != ')') p++; /* See if it's in the list. */ @@ -5151,63 +5231,20 @@ do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) { name = *(sl->ptr_spec); #ifdef DEBUG_SPECS - fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n", - c, sl->name, (c == '(') ? ')' : ']', name); + fnotice (stderr, "Processing spec (%s), which is '%s'\n", + sl->name, name); #endif break; } if (sl) { - if (c == '(') - { - value = do_spec_1 (name, 0, NULL); - if (value != 0) - return value; - } - else - { - char *x = (char *) alloca (strlen (name) * 2 + 1); - char *buf = x; - const char *y = name; - int flag = 0; - - /* Copy all of NAME into BUF, but put __ after - every -D and at the end of each arg. */ - while (1) - { - if (! strncmp (y, "-D", 2)) - { - *x++ = '-'; - *x++ = 'D'; - *x++ = '_'; - *x++ = '_'; - y += 2; - flag = 1; - continue; - } - else if (flag - && (*y == ' ' || *y == '\t' || *y == '=' - || *y == '}' || *y == 0)) - { - *x++ = '_'; - *x++ = '_'; - flag = 0; - } - if (*y == 0) - break; - else - *x++ = *y++; - } - *x = 0; - - value = do_spec_1 (buf, 0, NULL); - if (value != 0) - return value; - } + value = do_spec_1 (name, 0, NULL); + if (value != 0) + return value; } - /* Discard the closing paren or bracket. */ + /* Discard the closing paren. */ if (*p) p++; } @@ -5867,11 +5904,11 @@ is_directory (const char *path1, bool linker) if (linker && IS_DIR_SEPARATOR (path[0]) && ((cp - path == 6 - && strncmp (path + 1, "lib", 3) == 0) + && filename_ncmp (path + 1, "lib", 3) == 0) || (cp - path == 10 - && strncmp (path + 1, "usr", 3) == 0 + && filename_ncmp (path + 1, "usr", 3) == 0 && IS_DIR_SEPARATOR (path[4]) - && strncmp (path + 5, "lib", 3) == 0))) + && filename_ncmp (path + 5, "lib", 3) == 0))) return 0; return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); @@ -6078,7 +6115,11 @@ main (int argc, char **argv) if (argv != old_argv) at_file_supplied = true; - global_options = global_options_init; + /* Register the language-independent parameters. */ + global_init_params (); + finish_params (); + + init_options_struct (&global_options, &global_options_set); decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **, argv), @@ -6117,6 +6158,10 @@ main (int argc, char **argv) signal (SIGCHLD, SIG_DFL); #endif + /* Parsing and gimplification sometimes need quite large stack. + Increase stack size limits if possible. */ + stack_limit_increase (64 * 1024 * 1024); + /* Allocate the argument vector. */ alloc_args (); @@ -6218,48 +6263,6 @@ main (int argc, char **argv) for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) do_self_spec (driver_self_specs[i]); - if (compare_debug) - { - enum save_temps save; - - if (!compare_debug_second) - { - n_switches_debug_check[1] = n_switches; - n_switches_alloc_debug_check[1] = n_switches_alloc; - switches_debug_check[1] = XDUPVEC (struct switchstr, switches, - n_switches_alloc); - - do_self_spec ("%:compare-debug-self-opt()"); - n_switches_debug_check[0] = n_switches; - n_switches_alloc_debug_check[0] = n_switches_alloc; - switches_debug_check[0] = switches; - - n_switches = n_switches_debug_check[1]; - n_switches_alloc = n_switches_alloc_debug_check[1]; - switches = switches_debug_check[1]; - } - - /* Avoid crash when computing %j in this early. */ - save = save_temps_flag; - save_temps_flag = SAVE_TEMPS_NONE; - - compare_debug = -compare_debug; - do_self_spec ("%:compare-debug-self-opt()"); - - save_temps_flag = save; - - if (!compare_debug_second) - { - n_switches_debug_check[1] = n_switches; - n_switches_alloc_debug_check[1] = n_switches_alloc; - switches_debug_check[1] = switches; - compare_debug = -compare_debug; - n_switches = n_switches_debug_check[0]; - n_switches_alloc = n_switches_debug_check[0]; - switches = switches_debug_check[0]; - } - } - /* If not cross-compiling, look for executables in the standard places. */ if (*cross_compile == '0') @@ -6369,6 +6372,58 @@ main (int argc, char **argv) read_specs (filename ? filename : uptr->filename, FALSE); } + /* Process any user self specs. */ + { + struct spec_list *sl; + for (sl = specs; sl; sl = sl->next) + if (sl->name_len == sizeof "self_spec" - 1 + && !strcmp (sl->name, "self_spec")) + do_self_spec (*sl->ptr_spec); + } + + if (compare_debug) + { + enum save_temps save; + + if (!compare_debug_second) + { + n_switches_debug_check[1] = n_switches; + n_switches_alloc_debug_check[1] = n_switches_alloc; + switches_debug_check[1] = XDUPVEC (struct switchstr, switches, + n_switches_alloc); + + do_self_spec ("%:compare-debug-self-opt()"); + n_switches_debug_check[0] = n_switches; + n_switches_alloc_debug_check[0] = n_switches_alloc; + switches_debug_check[0] = switches; + + n_switches = n_switches_debug_check[1]; + n_switches_alloc = n_switches_alloc_debug_check[1]; + switches = switches_debug_check[1]; + } + + /* Avoid crash when computing %j in this early. */ + save = save_temps_flag; + save_temps_flag = SAVE_TEMPS_NONE; + + compare_debug = -compare_debug; + do_self_spec ("%:compare-debug-self-opt()"); + + save_temps_flag = save; + + if (!compare_debug_second) + { + n_switches_debug_check[1] = n_switches; + n_switches_alloc_debug_check[1] = n_switches_alloc; + switches_debug_check[1] = switches; + compare_debug = -compare_debug; + n_switches = n_switches_debug_check[0]; + n_switches_alloc = n_switches_debug_check[0]; + switches = switches_debug_check[0]; + } + } + + /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ if (gcc_exec_prefix) gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, @@ -6513,7 +6568,7 @@ main (int argc, char **argv) { printf (_("%s %s%s\n"), progname, pkgversion_string, version_string); - printf ("Copyright %s 2010 Free Software Foundation, Inc.\n", + printf ("Copyright %s 2011 Free Software Foundation, Inc.\n", _("(C)")); fputs (_("This is free software; see the source for copying conditions. There is NO\n\ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), @@ -6571,6 +6626,9 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" if (n_infiles == added_libraries) fatal_error ("no input files"); + if (seen_error ()) + goto out; + /* Make a place to record the compiler output file names that correspond to the input files. */ @@ -6653,12 +6711,10 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" { if (compare_debug) { - if (debug_check_temp_file[0]) - free (debug_check_temp_file[0]); + free (debug_check_temp_file[0]); debug_check_temp_file[0] = NULL; - if (debug_check_temp_file[1]) - free (debug_check_temp_file[1]); + free (debug_check_temp_file[1]); debug_check_temp_file[1] = NULL; } @@ -6690,8 +6746,8 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" } gcc_assert (debug_check_temp_file[1] - && strcmp (debug_check_temp_file[0], - debug_check_temp_file[1])); + && filename_cmp (debug_check_temp_file[0], + debug_check_temp_file[1])); if (verbose_flag) inform (0, "comparing final insns dumps"); @@ -6702,12 +6758,10 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" if (compare_debug) { - if (debug_check_temp_file[0]) - free (debug_check_temp_file[0]); + free (debug_check_temp_file[0]); debug_check_temp_file[0] = NULL; - if (debug_check_temp_file[1]) - free (debug_check_temp_file[1]); + free (debug_check_temp_file[1]); debug_check_temp_file[1] = NULL; } } @@ -6768,7 +6822,13 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) { int tmp = execution_count; +#if HAVE_LTO_PLUGIN > 0 +#if HAVE_LTO_PLUGIN == 2 + const char *fno_use_linker_plugin = "fno-use-linker-plugin"; +#else const char *fuse_linker_plugin = "fuse-linker-plugin"; +#endif +#endif /* We'll use ld if we can't find collect2. */ if (! strcmp (linker_name_spec, "collect2")) @@ -6778,8 +6838,14 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" linker_name_spec = "ld"; } +#if HAVE_LTO_PLUGIN > 0 +#if HAVE_LTO_PLUGIN == 2 + if (!switch_matches (fno_use_linker_plugin, + fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0)) +#else if (switch_matches (fuse_linker_plugin, fuse_linker_plugin + strlen (fuse_linker_plugin), 0)) +#endif { linker_plugin_file_spec = find_a_file (&exec_prefixes, LTOPLUGINSONAME, R_OK, @@ -6787,6 +6853,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" if (!linker_plugin_file_spec) fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found"); } +#endif lto_gcc_spec = argv[0]; /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables @@ -6829,6 +6896,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n" printf ("%s\n", bug_report_url); } + out: return (signal_count != 0 ? 2 : seen_error () ? (pass_exit_codes ? greatest_status : 1) : 0); @@ -7581,7 +7649,7 @@ print_multilib_info (void) /* If this is a duplicate, skip it. */ skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len - && ! strncmp (last_path, this_path, last_path_len)); + && ! filename_ncmp (last_path, this_path, last_path_len)); last_path = this_path; last_path_len = p - this_path; @@ -7785,7 +7853,7 @@ replace_outfile_spec_function (int argc, const char **argv) for (i = 0; i < n_infiles; i++) { - if (outfiles[i] && !strcmp (outfiles[i], argv[0])) + if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) outfiles[i] = xstrdup (argv[1]); } return NULL; @@ -7806,7 +7874,7 @@ remove_outfile_spec_function (int argc, const char **argv) for (i = 0; i < n_infiles; i++) { - if (outfiles[i] && !strcmp (outfiles[i], argv[0])) + if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) outfiles[i] = NULL; } return NULL; @@ -7994,12 +8062,22 @@ print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, return NULL; } -/* Compute a timestamp to initialize flag_random_seed. */ +/* Get a random number for -frandom-seed */ -static unsigned -get_local_tick (void) +static unsigned HOST_WIDE_INT +get_random_number (void) { - unsigned ret = 0; + unsigned HOST_WIDE_INT ret = 0; + int fd; + + fd = open ("/dev/urandom", O_RDONLY); + if (fd >= 0) + { + read (fd, &ret, sizeof (HOST_WIDE_INT)); + close (fd); + if (ret) + return ret; + } /* Get some more or less random data. */ #ifdef HAVE_GETTIMEOFDAY @@ -8018,7 +8096,7 @@ get_local_tick (void) } #endif - return ret; + return ret ^ getpid(); } /* %:compare-debug-dump-opt spec function. Save the last argument, @@ -8077,7 +8155,7 @@ compare_debug_dump_opt_spec_function (int arg, if (!which) { - unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid (); + unsigned HOST_WIDE_INT value = get_random_number (); sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); }