[gcc r13-3469] diagnostics: fix ICE in sarif output with NULL filename [PR107366]

[gcc r13-3469] diagnostics: fix ICE in sarif output with NULL filename [PR107366]

[David Malcolm]

https://gcc.gnu.org/g:2e8a0553918adc919f98ac5c0224fc6ce1fef68d

commit r13-3469-g2e8a0553918adc919f98ac5c0224fc6ce1fef68d
Author: Martin Liska <mliska@suse.cz>
Date:   Mon Oct 24 16:40:00 2022 -0400

    diagnostics: fix ICE in sarif output with NULL filename [PR107366]
    
    gcc/ChangeLog:
            PR analyzer/107366
            * diagnostic-format-sarif.cc
            (sarif_builder::maybe_make_physical_location_object): Gracefully
            reject locations with NULL filename.
    
    gcc/testsuite/ChangeLog:
            PR analyzer/107366
            * gcc.dg/analyzer/sarif-pr107366.c: New test.
    
    Signed-off-by: David Malcolm <dmalcolm@redhat.com>

Diff:
---
 gcc/diagnostic-format-sarif.cc                 |  2 +-
 gcc/testsuite/gcc.dg/analyzer/sarif-pr107366.c | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/gcc/diagnostic-format-sarif.cc b/gcc/diagnostic-format-sarif.cc
index fc28d160c38..7110db4edd6 100644
--- a/gcc/diagnostic-format-sarif.cc
+++ b/gcc/diagnostic-format-sarif.cc
@@ -595,7 +595,7 @@ sarif_builder::make_location_object (const diagnostic_event &event)
 json::object *
 sarif_builder::maybe_make_physical_location_object (location_t loc)
 {
-  if (loc <= BUILTINS_LOCATION)
+  if (loc <= BUILTINS_LOCATION || LOCATION_FILE (loc) == NULL)
     return NULL;
 
   json::object *phys_loc_obj = new json::object ();
diff --git a/gcc/testsuite/gcc.dg/analyzer/sarif-pr107366.c b/gcc/testsuite/gcc.dg/analyzer/sarif-pr107366.c
new file mode 100644
index 00000000000..997cf56586d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/sarif-pr107366.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-fdiagnostics-format=sarif-file" } */
+
+typedef enum {
+  HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_INFO
+} hwloc_topology_diff_obj_attr_type_t;
+enum { HWLOC_TOPOLOGY_DIFF_OBJ_ATTR } hwloc_apply_diff_one_diff_0_0;
+
+void
+hwloc_apply_diff_one() {
+  switch (hwloc_apply_diff_one_diff_0_0)
+  case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR: {
+    hwloc_topology_diff_obj_attr_type_t obj_attr_2_0_0;
+    switch (obj_attr_2_0_0)
+    case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_INFO: {
+      unsigned ii = 0;
+    }
+  }
+}
+