+2016-06-01 Eduard Sanou <dhole@openmailbox.org>
+
+ * doc/cppenv.texi: Note that the `%s` in `date` is a non-standard
+ extension.
+ * gcc.c (driver_handle_option): Call set_source_date_epoch_envvar.
+ * gcc.c (set_source_date_epoch_envvar): New function, sets
+ the SOURCE_DATE_EPOCH environment variable to the current time.
+
2016-06-01 Eric Botcazou <ebotcazou@adacore.com>
* tree-vect-loop.c (vect_determine_vectorization_factor): Also compute
+2016-06-01 Eduard Sanou <dhole@openmailbox.org>
+
+ * c-common.c (get_source_date_epoch): Rename to
+ cb_get_source_date_epoch.
+ * c-common.c (cb_get_source_date_epoch): Use a single generic erorr
+ message when the parsing fails. Use error_at instead of fatal_error.
+ * c-common.h (get_source_date_epoch): Rename to
+ cb_get_source_date_epoch.
+ * c-common.h (cb_get_source_date_epoch): Prototype.
+ * c-common.h (MAX_SOURCE_DATE_EPOCH): Define.
+ * c-common.h (c_omp_region_type): Remove trailing comma.
+ * c-lex.c (init_c_lex): Set cb->get_source_date_epoch callback.
+ * c-lex.c (c_lex_with_flags): Remove initialization of
+ pfile->source_date_epoch.
+
2016-05-30 Jakub Jelinek <jakub@redhat.com>
PR c++/71349
/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
timestamp to replace embedded current dates to get reproducible
results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
+
time_t
-get_source_date_epoch ()
+cb_get_source_date_epoch (cpp_reader *pfile ATTRIBUTE_UNUSED)
{
char *source_date_epoch;
long long epoch;
errno = 0;
epoch = strtoll (source_date_epoch, &endptr, 10);
- if ((errno == ERANGE && (epoch == LLONG_MAX || epoch == LLONG_MIN))
- || (errno != 0 && epoch == 0))
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
- "strtoll: %s\n", xstrerror(errno));
- if (endptr == source_date_epoch)
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
- "no digits were found: %s\n", endptr);
- if (*endptr != '\0')
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
- "trailing garbage: %s\n", endptr);
- if (epoch < 0)
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
- "value must be nonnegative: %lld \n", epoch);
+ if (errno != 0 || endptr == source_date_epoch || *endptr != '\0'
+ || epoch < 0 || epoch > MAX_SOURCE_DATE_EPOCH)
+ {
+ error_at (input_location, "environment variable SOURCE_DATE_EPOCH must "
+ "expand to a non-negative integer less than or equal to %wd",
+ MAX_SOURCE_DATE_EPOCH);
+ return (time_t) -1;
+ }
return (time_t) epoch;
}
c_register_builtin_type. */
extern GTY(()) tree registered_builtin_types;
+/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
+ timestamp to replace embedded current dates to get reproducible
+ results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
+extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
+
+/* The value (as a unix timestamp) corresponds to date
+ "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
+ __TIME__ can store. */
+#define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
+
/* In c-gimplify.c */
extern void c_genericize (tree);
extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
extern bool cilk_ignorable_spawn_rhs_op (tree);
extern bool cilk_recognize_spawn (tree, tree *);
-/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
- timestamp to replace embedded current dates to get reproducible
- results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
-extern time_t get_source_date_epoch (void);
-
#endif /* ! GCC_C_COMMON_H */
cb->valid_pch = c_common_valid_pch;
cb->read_pch = c_common_read_pch;
cb->has_attribute = c_common_has_attribute;
+ cb->get_source_date_epoch = cb_get_source_date_epoch;
/* Set the debug callbacks if we can use them. */
if ((debug_info_level == DINFO_LEVEL_VERBOSE
enum cpp_ttype type;
unsigned char add_flags = 0;
enum overflow_type overflow = OT_NONE;
- time_t source_date_epoch = get_source_date_epoch ();
-
- cpp_init_source_date_epoch (parse_in, source_date_epoch);
timevar_push (TV_CPP);
retry:
@end ifclear
@item SOURCE_DATE_EPOCH
-
If this variable is set, its value specifies a UNIX timestamp to be
used in replacement of the current date and time in the @code{__DATE__}
and @code{__TIME__} macros, so that the embedded timestamps become
The value of @env{SOURCE_DATE_EPOCH} must be a UNIX timestamp,
defined as the number of seconds (excluding leap seconds) since
-01 Jan 1970 00:00:00 represented in ASCII, identical to the output of
-@samp{@command{date +%s}}.
+01 Jan 1970 00:00:00 represented in ASCII; identical to the output of
+@samp{@command{date +%s}} on GNU/Linux and other systems that support the
+@code{%s} extension in the @code{date} command.
The value should be a known timestamp such as the last modification
time of the source or package and it should be set by the build
n_switches++;
}
+/* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is
+ not set already. */
+
+static void
+set_source_date_epoch_envvar ()
+{
+ /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations
+ of 64 bit integers. */
+ char source_date_epoch[21];
+ time_t tt;
+
+ errno = 0;
+ tt = time (NULL);
+ if (tt < (time_t) 0 || errno != 0)
+ tt = (time_t) 0;
+
+ snprintf (source_date_epoch, 21, "%llu", (unsigned long long) tt);
+ /* Using setenv instead of xputenv because we want the variable to remain
+ after finalizing so that it's still set in the second run when using
+ -fcompare-debug. */
+ setenv ("SOURCE_DATE_EPOCH", source_date_epoch, 0);
+}
+
/* Handle an option DECODED that is unknown to the option-processing
machinery. */
else
compare_debug_opt = arg;
save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
+ set_source_date_epoch_envvar ();
return true;
case OPT_fdiagnostics_color_:
+2016-06-01 Eduard Sanou <dhole@openmailbox.org>
+
+ * gcc.dg/cpp/source_date_epoch-1.c: New file, test the proper
+ behaviour of the macros __DATE__ and __TIME__ when SOURCE_DATE_EPOCH
+ env var is set.
+ * gcc.dg/cpp/source_date_epoch-2.c: New file, test the error output
+ when parsing the SOURCE_DATE_EPOCH env var, and make sure it is only
+ shown once.
+ * lib/gcc-dg.exp (dg-set-compiler-env-var): New function, set env vars
+ during compilation.
+ * lib/gcc-dg.exp (restore-compiler-env-var): New function, restore env
+ vars set by dg-set-compiler-env-var.
+
2016-06-01 Paul Thomas <pault@gcc.gnu.org>
PR fortran/71156
--- /dev/null
+/* { dg-do run } */
+/* { dg-set-compiler-env-var SOURCE_DATE_EPOCH "630333296" } */
+
+int
+main(void)
+{
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__);
+ return 0;
+}
+
+/* { dg-output "^Dec 22 1989 12:34:56\n$" } */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-set-compiler-env-var SOURCE_DATE_EPOCH "AAA" } */
+
+/* Make sure that SOURCE_DATE_EPOCH is only parsed once */
+
+int
+main(void)
+{
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__); /* { dg-error "SOURCE_DATE_EPOCH must expand" } */
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__);
+ return 0;
+}
}
}
+proc dg-set-compiler-env-var { args } {
+ global set_compiler_env_var
+ global saved_compiler_env_var
+ if { [llength $args] != 3 } {
+ error "dg-set-compiler-env-var: need two arguments"
+ return
+ }
+ set var [lindex $args 1]
+ set value [lindex $args 2]
+ if [info exists ::env($var)] {
+ lappend saved_compiler_env_var [list $var 1 $::env($var)]
+ } else {
+ lappend saved_compiler_env_var [list $var 0]
+ }
+ setenv $var $value
+ lappend set_compiler_env_var [list $var $value]
+}
+
+proc restore-compiler-env-var { } {
+ global saved_compiler_env_var
+ for { set env_vari [llength $saved_compiler_env_var] } {
+ [incr env_vari -1] >= 0 } {} {
+ set env_var [lindex $saved_compiler_env_var $env_vari]
+ set var [lindex $env_var 0]
+ if [lindex $env_var 1] {
+ setenv $var [lindex $env_var 2]
+ } else {
+ unsetenv $var
+ }
+ }
+}
+
# Utility routines.
#
if [info exists set_target_env_var] {
unset set_target_env_var
}
+ if [info exists set_compiler_env_var] {
+ restore-compiler-env-var
+ unset set_compiler_env_var
+ unset saved_compiler_env_var
+ }
if [info exists keep_saved_temps_suffixes] {
unset keep_saved_temps_suffixes
}
+2016-06-01 Eduard Sanou <dhole@openmailbox.org>
+
+ * include/cpplib.h (cpp_callbacks): Add get_source_date_epoch
+ callback.
+ * include/cpplib.h (cpp_init_source_date_epoch): Remove prototype.
+ * init.c (cpp_init_source_date_epoch): Remove function.
+ * init.c (cpp_create_reader): Initialize pfile->source_date_epoch.
+ * internal.h (cpp_reader): Extend comment about source_date_epoch.
+ * macro.c (_cpp_builtin_macro_text): Use get_source_date_epoch
+ callback only once, read pfile->source_date_epoch on future passes.
+ Check that get_source_date_epoch callback is not NULL.
+
2016-05-20 Martin Liska <mliska@suse.cz>
* config.in: Regenerated.
/* Callback that can change a user builtin into normal macro. */
bool (*user_builtin_macro) (cpp_reader *, cpp_hashnode *);
+
+ /* Callback to parse SOURCE_DATE_EPOCH from environment. */
+ time_t (*get_source_date_epoch) (cpp_reader *);
};
#ifdef VMS
/* Set up built-ins like __FILE__. */
extern void cpp_init_builtins (cpp_reader *, int);
-/* Initialize the source_date_epoch value. */
-extern void cpp_init_source_date_epoch (cpp_reader *, time_t);
-
/* This is called after options have been parsed, and partially
processed. */
extern void cpp_post_options (cpp_reader *);
/* Do not force token locations by default. */
pfile->forced_token_location_p = NULL;
+ /* Initialize source_date_epoch to -2 (not yet set). */
+ pfile->source_date_epoch = (time_t) -2;
+
/* The expression parser stack. */
_cpp_expand_op_stack (pfile);
_cpp_define_builtin (pfile, "__OBJC__ 1");
}
-/* Initialize the source_date_epoch value. */
-void
-cpp_init_source_date_epoch (cpp_reader *pfile, time_t source_date_epoch)
-{
- pfile->source_date_epoch = source_date_epoch;
-}
-
/* Sanity-checks are dependent on command-line options, so it is
called as a subroutine of cpp_read_main_file. */
#if CHECKING_P
const unsigned char *time;
/* Externally set timestamp to replace current date and time useful for
- reproducibility. */
+ reproducibility. It should be initialized to -2 (not yet set) and
+ set to -1 to disable it or to a non-negative value to enable it. */
time_t source_date_epoch;
/* EOF token, and a token forcing paste avoidance. */
struct tm *tb = NULL;
/* Set a reproducible timestamp for __DATE__ and __TIME__ macro
- usage if SOURCE_DATE_EPOCH is defined. */
- if (pfile->source_date_epoch != (time_t) -1)
- tb = gmtime (&pfile->source_date_epoch);
+ if SOURCE_DATE_EPOCH is defined. */
+ if (pfile->source_date_epoch == (time_t) -2
+ && pfile->cb.get_source_date_epoch != NULL)
+ pfile->source_date_epoch = pfile->cb.get_source_date_epoch (pfile);
+
+ if (pfile->source_date_epoch >= (time_t) 0)
+ tb = gmtime (&pfile->source_date_epoch);
else
{
/* (time_t) -1 is a legitimate value for "number of seconds
projects / gcc.git / commitdiff