Warn for missing separate debug files only if needed

We shouldn't warn missing separate debug files when debug info isn't
needed.

	PR binutils/27486
	* dwarf.c (load_separate_debug_info): Issue warning only if
	do_debug_links is set.
	* testsuite/binutils-all/compress.exp: Run objdump and readelf
	with missing debug file.

3 files changed, 54 insertions, 23 deletions

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 419be64..3aec667 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,11 @@
+2021-03-01  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR binutils/27486
+	* dwarf.c (load_separate_debug_info): Issue warning only if
+	do_debug_links is set.
+	* testsuite/binutils-all/compress.exp: Run objdump and readelf
+	with missing debug file.
+
 2021-03-01  Alan Modra  <amodra@gmail.com>
 
 	PR 27128
diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 555e5e0..f50b7ee 100644
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -11210,44 +11210,52 @@ load_separate_debug_info (const char *            main_filename,
   }
 #endif
 
-  /* Failed to find the file.  */
-  warn (_("could not find separate debug file '%s'\n"), separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+  if (do_debug_links)
+    {
+      /* Failed to find the file.  */
+      warn (_("could not find separate debug file '%s'\n"),
+	    separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
 #ifdef EXTRA_DEBUG_ROOT2
-  sprintf (debug_filename, "%s/%s", EXTRA_DEBUG_ROOT2, separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s/%s", EXTRA_DEBUG_ROOT2,
+	       separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 #endif
 
 #ifdef EXTRA_DEBUG_ROOT1
-  sprintf (debug_filename, "%s/%s/%s", EXTRA_DEBUG_ROOT1, canon_dir, separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s/%s/%s", EXTRA_DEBUG_ROOT1,
+	       canon_dir, separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
-  sprintf (debug_filename, "%s/%s", EXTRA_DEBUG_ROOT1, separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s/%s", EXTRA_DEBUG_ROOT1,
+	       separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 #endif
 
-  sprintf (debug_filename, "%s.debug/%s", canon_dir, separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s.debug/%s", canon_dir,
+	       separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
-  sprintf (debug_filename, "%s%s", canon_dir, separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s%s", canon_dir, separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
-  sprintf (debug_filename, ".debug/%s", separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, ".debug/%s", separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
-  sprintf (debug_filename, "%s", separate_filename);
-  warn (_("tried: %s\n"), debug_filename);
+      sprintf (debug_filename, "%s", separate_filename);
+      warn (_("tried: %s\n"), debug_filename);
 
 #if HAVE_LIBDEBUGINFOD
-  {
-    char *urls = getenv (DEBUGINFOD_URLS_ENV_VAR);
-    if (urls == NULL)
-      urls = "";
+      {
+	char *urls = getenv (DEBUGINFOD_URLS_ENV_VAR);
+	if (urls == NULL)
+	  urls = "";
 
-    warn (_("tried: DEBUGINFOD_URLS=%s\n"), urls);
-  }
+	warn (_("tried: DEBUGINFOD_URLS=%s\n"), urls);
+      }
 #endif
+    }
 
   free (canon_dir);
   free (debug_filename);
diff --git a/binutils/testsuite/binutils-all/compress.exp b/binutils/testsuite/binutils-all/compress.exp
index 98daf67..88fef269 100644
--- a/binutils/testsuite/binutils-all/compress.exp
+++ b/binutils/testsuite/binutils-all/compress.exp
@@ -676,6 +676,7 @@ proc test_gnu_debuglink {} {
     global STRIP
     global OBJCOPY
     global OBJDUMP
+    global READELF
     global gcc_gas_flag
 
     set test "gnu-debuglink"
@@ -757,6 +758,20 @@ proc test_gnu_debuglink {} {
     } else {
 	pass "$test (objdump 2)"
     }
+
+    remote_file host delete tmpdir/testprog.compress
+    set got [remote_exec host [concat sh -c [list "$OBJDUMP --syms tmpdir/testprog > /dev/null"]]]
+    if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
+	fail "$test (objdump with missing link)"
+    } else {
+	pass "$test (objdump with missing link)"
+    }
+    set got [remote_exec host [concat sh -c [list "$READELF -S tmpdir/testprog > /dev/null"]]]
+    if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
+	fail "$test (readelf with missing link)"
+    } else {
+	pass "$test (readelf with missing link)"
+    }
 }
 
 if {[is_elf_format]} then {