libbacktrace: use ELF symbol table if no debug info available

	PR libbacktrace/97080
	* fileline.c (backtrace_syminfo_to_full_callback): New function.
	(backtrace_syminfo_to_full_error_callback): New function.
	* elf.c (elf_nodebug): Call syminfo_fn if possible.
	* internal.h (struct backtrace_call_full): Define.
	(backtrace_syminfo_to_full_callback): Declare.
	(backtrace_syminfo_to_full_error_callback): Declare.
	* mtest.c (f3): Only check all[i] if data.index permits.

1 files changed, 36 insertions, 27 deletions

diff --git a/libbacktrace/mtest.c b/libbacktrace/mtest.c
index d90fd1e..d73c98d 100644
--- a/libbacktrace/mtest.c
+++ b/libbacktrace/mtest.c
@@ -156,40 +156,49 @@ f3 (int f1line __attribute__ ((unused)), int f2line __attribute__ ((unused)))
 	}
     }
 
-  if (all[0].function == NULL)
+  if (data.index > 0)
     {
-      fprintf (stderr, "test1: [0]: missing function name\n");
-      data.failed = 1;
-    }
-  else if (strcmp (all[0].function, "f3") != 0)
-    {
-      fprintf (stderr, "test1: [0]: got %s expected %s\n",
-	       all[0].function, "f3");
-      data.failed = 1;
+      if (all[0].function == NULL)
+	{
+	  fprintf (stderr, "test1: [0]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[0].function, "f3") != 0)
+	{
+	  fprintf (stderr, "test1: [0]: got %s expected %s\n",
+		   all[0].function, "f3");
+	  data.failed = 1;
+	}
     }
 
-  if (all[1].function == NULL)
-    {
-      fprintf (stderr, "test1: [1]: missing function name\n");
-      data.failed = 1;
-    }
-  else if (strcmp (all[1].function, "f2") != 0)
+  if (data.index > 1)
     {
-      fprintf (stderr, "test1: [1]: got %s expected %s\n",
-	       all[0].function, "f2");
-      data.failed = 1;
+      if (all[1].function == NULL)
+	{
+	  fprintf (stderr, "test1: [1]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[1].function, "f2") != 0)
+	{
+	  fprintf (stderr, "test1: [1]: got %s expected %s\n",
+		   all[0].function, "f2");
+	  data.failed = 1;
+	}
     }
 
-  if (all[2].function == NULL)
-    {
-      fprintf (stderr, "test1: [2]: missing function name\n");
-      data.failed = 1;
-    }
-  else if (strcmp (all[2].function, "test1") != 0)
+  if (data.index > 2)
     {
-      fprintf (stderr, "test1: [2]: got %s expected %s\n",
-	       all[0].function, "test1");
-      data.failed = 1;
+      if (all[2].function == NULL)
+	{
+	  fprintf (stderr, "test1: [2]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[2].function, "test1") != 0)
+	{
+	  fprintf (stderr, "test1: [2]: got %s expected %s\n",
+		   all[0].function, "test1");
+	  data.failed = 1;
+	}
     }
 
   printf ("%s: backtrace_full noinline\n", data.failed ? "FAIL" : "PASS");