Correct a mistake in a warnung for -Wnonnull.

In the warning for -Wnonnull when warning about array parameters
with bounds > 0 and which are NULL the numbers referring to the
two arguments are switched. This patch corrects the mistake.

2021-07-28  Martin Uecker  <muecker@gwdg.de>

gcc/
	* calls.c (maybe_warn_rdwr_sizes): Correct argument
	numbers in warning that were switched.

gcc/testsuite/
	* gcc.dg/Wnonnull-4.c: Correct argument numbers in warnings.

2 files changed, 20 insertions, 20 deletions

diff --git a/gcc/calls.c b/gcc/calls.c
index d2413a2..c54c572 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -2128,8 +2128,8 @@ maybe_warn_rdwr_sizes (rdwr_map *rwm, tree fndecl, tree fntype, tree exp)
 				  "array %s is null but "
 				  "the corresponding bound argument "
 				  "%i value is %s",
-				  sizidx + 1, argtypestr.c_str (),
-				  ptridx + 1, sizstr))
+				  ptridx + 1, argtypestr.c_str (),
+				  sizidx + 1, sizstr))
 		    arg_warned = OPT_Wnonnull;
 		}
 	      else if (warning_at (loc, OPT_Wnonnull,
diff --git a/gcc/testsuite/gcc.dg/Wnonnull-4.c b/gcc/testsuite/gcc.dg/Wnonnull-4.c
index 180a40d..2c1c45a 100644
--- a/gcc/testsuite/gcc.dg/Wnonnull-4.c
+++ b/gcc/testsuite/gcc.dg/Wnonnull-4.c
@@ -27,9 +27,9 @@ void test_fca_n (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'char\\\[n]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'char\\\[n]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'char\\\[n]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'char\\\[n]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'char\\\[n]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'char\\\[n]' is null but the corresponding bound argument 1 value is \\d+" }
 }
 
 
@@ -55,9 +55,9 @@ void test_fsa_x_n (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'short int\\\[]\\\[n]' is null but the corresponding bound argument 1 value is \\d+" }
 }
 
 
@@ -83,9 +83,9 @@ void test_fia_1_n (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'int\\\[1]\\\[n]' is null but the corresponding bound argument 1 value is \\d+" }
 }
 
 
@@ -111,9 +111,9 @@ void test_fla_3_n (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'long int\\\[3]\\\[n]' is null but the corresponding bound argument 1 value is \\d+" }
 }
 
 
@@ -139,9 +139,9 @@ void test_fda_n_5 (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'double\\\[n]\\\[5]' is null but the corresponding bound argument 1 value is \\d+" }
 }
 
 
@@ -167,7 +167,7 @@ void test_fca_n_n (int r_m1)
   T (  0);
 
   // Verify positive bounds.
-  T (  1);          // { dg-warning "argument 1 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 2 value is 1" }
-  T (  9);          // { dg-warning "argument 1 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 2 value is 9" }
-  T (max);          // { dg-warning "argument 1 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 2 value is \\d+" }
+  T (  1);          // { dg-warning "argument 2 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 1 value is 1" }
+  T (  9);          // { dg-warning "argument 2 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 1 value is 9" }
+  T (max);          // { dg-warning "argument 2 of variable length array 'char\\\[n]\\\[n]' is null but the corresponding bound argument 1 value is \\d+" }
 }