https://gcc.gnu.org/g:b4693ce3a0565bb75d0d5698f2ce2ffc53d1ff84

commit r15-2290-gb4693ce3a0565bb75d0d5698f2ce2ffc53d1ff84
Author: David Malcolm <dmalc...@redhat.com>
Date:   Wed Jul 24 18:07:55 2024 -0400

    diagnostics: SARIF output: add "{start,end}TimeUtc" properties (§§3.20.7-8)
    
    gcc/ChangeLog:
            * diagnostic-format-sarif.cc
            (make_date_time_string_for_current_time): New.
            (sarif_invocation::sarif_invocation): Set "startTimeUtc"
            property (§3.20.7).
            (sarif_invocation::prepare_to_flush): Set "endTimeUtc"
            property (§3.20.8).
    
    gcc/testsuite/ChangeLog:
            * c-c++-common/diagnostic-format-sarif-file-1.c: Verify that we have
            "startTimeUtc" and "endTimeUtc" properties of the correct form.
    
    Signed-off-by: David Malcolm <dmalc...@redhat.com>

Diff:
---
 gcc/diagnostic-format-sarif.cc                     | 28 ++++++++++++++++++++++
 .../c-c++-common/diagnostic-format-sarif-file-1.c  |  5 ++++
 2 files changed, 33 insertions(+)

diff --git a/gcc/diagnostic-format-sarif.cc b/gcc/diagnostic-format-sarif.cc
index 6c7216651627..775d01f75744 100644
--- a/gcc/diagnostic-format-sarif.cc
+++ b/gcc/diagnostic-format-sarif.cc
@@ -119,6 +119,26 @@ class sarif_tool : public sarif_object {};
 
 class sarif_tool_component : public sarif_object {};
 
+/* Make a JSON string for the current date and time.
+   See SARIF v2.1.0 section 3.9 "Date/time properties".
+   Given that we don't run at the very beginning/end of the
+   process, it doesn't make sense to be more accurate than
+   the current second.  */
+
+static std::unique_ptr<json::string>
+make_date_time_string_for_current_time ()
+{
+  time_t t = time (nullptr);
+  struct tm *tm = gmtime (&t);
+  char buf[256];
+  snprintf (buf, sizeof (buf) - 1,
+           ("%04i-%02i-%02iT"
+            "%02i:%02i:%02iZ"),
+           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+           tm->tm_hour, tm->tm_min, tm->tm_sec);
+  return ::make_unique<json::string> (buf);
+}
+
 /* Subclass of sarif_object for SARIF "invocation" objects
    (SARIF v2.1.0 section 3.20).  */
 
@@ -530,6 +550,10 @@ sarif_invocation::sarif_invocation (sarif_builder &builder,
   if (const char *pwd = getpwd ())
     set<sarif_artifact_location> ("workingDirectory",
                                  builder.make_artifact_location_object (pwd));
+
+  // "startTimeUtc" property (SARIF v2.1.0 section 3.20.7)
+  set<json::string> ("startTimeUtc",
+                    make_date_time_string_for_current_time ());
 }
 
 /* Handle an internal compiler error DIAGNOSTIC occurring on CONTEXT.
@@ -559,6 +583,10 @@ sarif_invocation::prepare_to_flush (diagnostic_context 
&context)
      this object (SARIF v2.1.0 section 3.8) e.g. for recording time vars.  */
   if (auto client_data_hooks = context.get_client_data_hooks ())
     client_data_hooks->add_sarif_invocation_properties (*this);
+
+  // "endTimeUtc" property (SARIF v2.1.0 section 3.20.8);
+  set<json::string> ("endTimeUtc",
+                    make_date_time_string_for_current_time ());
 }
 
 /* class sarif_artifact : public sarif_object.  */
diff --git a/gcc/testsuite/c-c++-common/diagnostic-format-sarif-file-1.c 
b/gcc/testsuite/c-c++-common/diagnostic-format-sarif-file-1.c
index c9ad0d238195..fdf602eaae7b 100644
--- a/gcc/testsuite/c-c++-common/diagnostic-format-sarif-file-1.c
+++ b/gcc/testsuite/c-c++-common/diagnostic-format-sarif-file-1.c
@@ -37,6 +37,11 @@
        3.20.2 invocation "arguments" property:
        { dg-final { scan-sarif-file {"arguments": \[} } }
 
+       Expect "startTimeUtc" and "endTimeUtc" properties of the form
+       "nnnn-nn-nnTnn:nn:nnZ" (3.20.7 and 3.20.8):
+       { dg-final { scan-sarif-file {"startTimeUtc": 
"[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z"} 
} }
+       { dg-final { scan-sarif-file {"endTimeUtc": 
"[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z"} 
} }
+
        { dg-final { scan-sarif-file {"workingDirectory": } } }
        { dg-final { scan-sarif-file "\"toolExecutionNotifications\": \\\[\\\]" 
} }
        { dg-final { scan-sarif-file "\"executionSuccessful\": true" } }

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