PR tree-optimization/83369 - Missing diagnostics during inlining

gcc/ChangeLog:

	PR tree-optimization/83369
	* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Use %G to print
	inlining context.

gcc/testsuite/ChangeLog:

	PR tree-optimization/83369
	gcc.dg/Wnonnull.c: New test.

From-SVN: r257400

gcc/ChangeLog

+2018-02-05  Martin Sebor  <msebor@redhat.com>
+
+	PR tree-optimization/83369
+	* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Use %G to print
+	inlining context.
+
 2018-02-05  Martin Liska  <mliska@suse.cz>
 
 	* doc/invoke.texi: Cherry-pick upstream r323995.

gcc/testsuite/ChangeLog

+2018-02-05  Martin Sebor  <msebor@redhat.com>
+
+	PR tree-optimization/83369
+	gcc.dg/Wnonnull.c: New test.
+
 2018-02-05  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* lib/lto.exp (lto_handle_diagnostics): Remove messages_by_file

gcc/testsuite/gcc.dg/Wnonnull.c

+/* PR tree-optimization/83369 - Missing diagnostics during inlining
+   { dg-do compile }
+   { dg-options "-O2 -Wall" } */
+
+#include <string.h>
+
+char buf[100];
+
+struct Test
+{
+  const char* s1;
+  const char* s2;
+};
+
+__attribute ((nonnull (1, 2)))
+inline char*
+my_strcpy (char *restrict dst, const char *restrict src, size_t size)
+{
+  size_t len = strlen (src);        /* { dg-warning "argument 1 null where non-null expected" } */
+  if (len < size)
+    memcpy (dst, src, len + 1);     /* { dg-warning "argument 2 null where non-null expected" } */
+  else
+    {
+      memcpy (dst, src, size - 1);  /* { dg-warning "argument 2 null where non-null expected" } */
+      dst[size - 1] = '\0';
+    }
+  return dst;
+}
+
+void test (struct Test* test)
+{
+  if (test->s1)
+    my_strcpy (buf, test->s1, sizeof buf);
+  else if (test->s2)
+    my_strcpy (buf, test->s2, sizeof buf);
+  else
+    my_strcpy (buf, test->s2, sizeof buf);
+}
+
+/* Verify that the inlining context is printed for -Wnonnull:
+   { dg-message "function .my_strcpy..*inlined from .test." "" { target *-*-* } 0 }  */

gcc/tree-ssa-ccp.c

@@ -3458,8 +3458,8 @@ pass_post_ipa_warn::execute (function *fun)
 
 		      location_t loc = gimple_location (stmt);
 		      if (warning_at (loc, OPT_Wnonnull,
-				      "argument %u null where non-null "
-				      "expected", i + 1))
+				      "%Gargument %u null where non-null "
+				      "expected", as_a <gcall *>(stmt), i + 1))
 			{
 			  tree fndecl = gimple_call_fndecl (stmt);
 			  if (fndecl && DECL_IS_BUILTIN (fndecl))