summaryrefslogtreecommitdiff
path: root/debian/patches/gcc-ice-hack.diff
diff options
context:
space:
mode:
Diffstat (limited to 'debian/patches/gcc-ice-hack.diff')
-rw-r--r--debian/patches/gcc-ice-hack.diff315
1 files changed, 315 insertions, 0 deletions
diff --git a/debian/patches/gcc-ice-hack.diff b/debian/patches/gcc-ice-hack.diff
new file mode 100644
index 0000000..bcd75ca
--- /dev/null
+++ b/debian/patches/gcc-ice-hack.diff
@@ -0,0 +1,315 @@
+# DP: Retry the build on an ice, save the calling options and preprocessed
+# DP: source when the ice is reproducible.
+
+2004-01-23 Jakub Jelinek <jakub@redhat.com>
+
+ * gcc.c (execute): Don't free first string early, but at the end
+ of the function. Call retry_ice if compiler exited with
+ ICE_EXIT_CODE.
+ (retry_ice): New function.
+ * diagnostic.c (diagnostic_count_diagnostic,
+ diagnostic_action_after_output, error_recursion): Exit with
+ ICE_EXIT_CODE instead of FATAL_EXIT_CODE.
+
+#--- a/src/gcc/Makefile.in
+#+++ b/src/gcc/Makefile.in
+#@@ -181,6 +181,8 @@ SYSCALLS.c.X-warn = -Wno-strict-prototypes -Wno-error
+# dfp.o-warn = -Wno-error
+# # mips-tfile.c contains -Wcast-qual warnings.
+# mips-tfile.o-warn = -Wno-error
+#+# gcc-ice-hack
+#+gcc.o-warn = -Wno-error
+#
+# # All warnings have to be shut off in stage1 if the compiler used then
+# # isn't gcc; configure determines that. WARN_CFLAGS will be either
+Index: b/src/gcc/gcc.c
+===================================================================
+--- a/src/gcc/gcc.c
++++ b/src/gcc/gcc.c
+@@ -252,6 +252,9 @@ static void init_gcc_specs (struct obsta
+ #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
+ static const char *convert_filename (const char *, int, int);
+ #endif
++#if !(defined (__MSDOS__) || defined (OS2) || defined (VMS))
++static void retry_ice (const char *prog, const char **argv);
++#endif
+
+ static const char *getenv_spec_function (int, const char **);
+ static const char *if_exists_spec_function (int, const char **);
+@@ -2798,7 +2801,7 @@ execute (void)
+ }
+ }
+
+- if (string != commands[i].prog)
++ if (i && string != commands[i].prog)
+ free (CONST_CAST (char *, string));
+ }
+
+@@ -2851,6 +2854,16 @@ execute (void)
+ else if (WIFEXITED (status)
+ && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
+ {
++#if !(defined (__MSDOS__) || defined (OS2) || defined (VMS))
++ /* For ICEs in cc1, cc1obj, cc1plus see if it is
++ reproducible or not. */
++ const char *p;
++ if (WEXITSTATUS (status) == ICE_EXIT_CODE
++ && i == 0
++ && (p = strrchr (commands[0].argv[0], DIR_SEPARATOR))
++ && ! strncmp (p + 1, "cc1", 3))
++ retry_ice (commands[0].prog, commands[0].argv);
++#endif
+ if (WEXITSTATUS (status) > greatest_status)
+ greatest_status = WEXITSTATUS (status);
+ ret_code = -1;
+@@ -2908,6 +2921,9 @@ execute (void)
+ }
+ }
+
++ if (commands[0].argv[0] != commands[0].prog)
++ free (CONST_CAST (char *, commands[0].argv[0]));
++
+ return ret_code;
+ }
+ }
+@@ -6099,6 +6115,227 @@ give_switch (int switchnum, int omit_fir
+ switches[switchnum].validated = true;
+ }
+
++#if !(defined (__MSDOS__) || defined (OS2) || defined (VMS))
++#define RETRY_ICE_ATTEMPTS 2
++
++static void
++retry_ice (const char *prog, const char **argv)
++{
++ int nargs, out_arg = -1, quiet = 0, attempt;
++ int pid, retries, sleep_interval;
++ const char **new_argv;
++ char *temp_filenames[RETRY_ICE_ATTEMPTS * 2 + 2];
++
++ if (gcc_input_filename == NULL || ! strcmp (gcc_input_filename, "-"))
++ return;
++
++ for (nargs = 0; argv[nargs] != NULL; ++nargs)
++ /* Only retry compiler ICEs, not preprocessor ones. */
++ if (! strcmp (argv[nargs], "-E"))
++ return;
++ else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o')
++ {
++ if (out_arg == -1)
++ out_arg = nargs;
++ else
++ return;
++ }
++ /* If the compiler is going to output any time information,
++ it might varry between invocations. */
++ else if (! strcmp (argv[nargs], "-quiet"))
++ quiet = 1;
++ else if (! strcmp (argv[nargs], "-ftime-report"))
++ return;
++
++ if (out_arg == -1 || !quiet)
++ return;
++
++ memset (temp_filenames, '\0', sizeof (temp_filenames));
++ new_argv = XALLOCAVEC (const char *, nargs + 3);
++ memcpy (new_argv, argv, (nargs + 1) * sizeof (const char *));
++ new_argv[nargs++] = "-frandom-seed=0";
++ new_argv[nargs] = NULL;
++ if (new_argv[out_arg][2] == '\0')
++ new_argv[out_arg + 1] = "-";
++ else
++ new_argv[out_arg] = "-o-";
++
++ for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS + 1; ++attempt)
++ {
++ int fd = -1;
++ int status;
++
++ temp_filenames[attempt * 2] = make_temp_file (".out");
++ temp_filenames[attempt * 2 + 1] = make_temp_file (".err");
++
++ if (attempt == RETRY_ICE_ATTEMPTS)
++ {
++ int i;
++ int fd1, fd2;
++ struct stat st1, st2;
++ size_t n, len;
++ char *buf;
++
++ buf = XNEWVEC (char, 8192);
++
++ for (i = 0; i < 2; ++i)
++ {
++ fd1 = open (temp_filenames[i], O_RDONLY);
++ fd2 = open (temp_filenames[2 + i], O_RDONLY);
++
++ if (fd1 < 0 || fd2 < 0)
++ {
++ i = -1;
++ close (fd1);
++ close (fd2);
++ break;
++ }
++
++ if (fstat (fd1, &st1) < 0 || fstat (fd2, &st2) < 0)
++ {
++ i = -1;
++ close (fd1);
++ close (fd2);
++ break;
++ }
++
++ if (st1.st_size != st2.st_size)
++ {
++ close (fd1);
++ close (fd2);
++ break;
++ }
++
++ len = 0;
++ for (n = st1.st_size; n; n -= len)
++ {
++ len = n;
++ if (len > 4096)
++ len = 4096;
++
++ if (read (fd1, buf, len) != (int) len
++ || read (fd2, buf + 4096, len) != (int) len)
++ {
++ i = -1;
++ break;
++ }
++
++ if (memcmp (buf, buf + 4096, len) != 0)
++ break;
++ }
++
++ close (fd1);
++ close (fd2);
++
++ if (n)
++ break;
++ }
++
++ free (buf);
++ if (i == -1)
++ break;
++
++ if (i != 2)
++ {
++ fnotice (stderr, "The bug is not reproducible, so it is"
++ " likely a hardware or OS problem.\n");
++ break;
++ }
++
++ fd = open (temp_filenames[attempt * 2], O_RDWR);
++ if (fd < 0)
++ break;
++ write (fd, "//", 2);
++ for (i = 0; i < nargs; i++)
++ {
++ write (fd, " ", 1);
++ write (fd, new_argv[i], strlen (new_argv[i]));
++ }
++ write (fd, "\n", 1);
++ new_argv[nargs] = "-E";
++ new_argv[nargs + 1] = NULL;
++ }
++
++ /* Fork a subprocess; wait and retry if it fails. */
++ sleep_interval = 1;
++ pid = -1;
++ for (retries = 0; retries < 4; retries++)
++ {
++ pid = fork ();
++ if (pid >= 0)
++ break;
++ sleep (sleep_interval);
++ sleep_interval *= 2;
++ }
++
++ if (pid < 0)
++ break;
++ else if (pid == 0)
++ {
++ if (attempt != RETRY_ICE_ATTEMPTS)
++ fd = open (temp_filenames[attempt * 2], O_RDWR);
++ if (fd < 0)
++ exit (-1);
++ if (fd != 1)
++ {
++ close (1);
++ dup (fd);
++ close (fd);
++ }
++
++ fd = open (temp_filenames[attempt * 2 + 1], O_RDWR);
++ if (fd < 0)
++ exit (-1);
++ if (fd != 2)
++ {
++ close (2);
++ dup (fd);
++ close (fd);
++ }
++
++ if (prog == new_argv[0])
++ execvp (prog, CONST_CAST2 (char *const *, const char **, new_argv));
++ else
++ execv (new_argv[0], CONST_CAST2 (char *const *, const char **, new_argv));
++ exit (-1);
++ }
++
++ if (waitpid (pid, &status, 0) < 0)
++ break;
++
++ if (attempt < RETRY_ICE_ATTEMPTS
++ && (! WIFEXITED (status) || WEXITSTATUS (status) != ICE_EXIT_CODE))
++ {
++ fnotice (stderr, "The bug is not reproducible, so it is"
++ " likely a hardware or OS problem.\n");
++ break;
++ }
++ else if (attempt == RETRY_ICE_ATTEMPTS)
++ {
++ close (fd);
++ if (WIFEXITED (status)
++ && WEXITSTATUS (status) == SUCCESS_EXIT_CODE)
++ {
++ fnotice (stderr, "Preprocessed source stored into %s file,"
++ " please attach this to your bugreport.\n",
++ temp_filenames[attempt * 2]);
++ /* Make sure it is not deleted. */
++ free (temp_filenames[attempt * 2]);
++ temp_filenames[attempt * 2] = NULL;
++ break;
++ }
++ }
++ }
++
++ for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS * 2 + 2; attempt++)
++ if (temp_filenames[attempt])
++ {
++ unlink (temp_filenames[attempt]);
++ free (temp_filenames[attempt]);
++ }
++}
++#endif
++
+ /* Search for a file named NAME trying various prefixes including the
+ user's -B prefix and some standard ones.
+ Return the absolute file name found. If nothing is found, return NAME. */
+Index: b/src/gcc/diagnostic.c
+===================================================================
+--- a/src/gcc/diagnostic.c
++++ b/src/gcc/diagnostic.c
+@@ -492,7 +492,7 @@ diagnostic_action_after_output (diagnost
+ real_abort ();
+ diagnostic_finish (context);
+ fnotice (stderr, "compilation terminated.\n");
+- exit (FATAL_EXIT_CODE);
++ exit (ICE_EXIT_CODE);
+
+ default:
+ gcc_unreachable ();
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 23:18:39 +0000