From: Jerry DeLisle <jvdelisle@gcc.gnu.org>
Date: Mon, 8 May 2023 01:54:55 +0000 (-0700)
Subject: Fortran: Reject semicolon after namelist name.
X-Git-Tag: basepoints/gcc-15~9573
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d46b3db4bd016a3eccfb933c81c7a9d87c0ad403;p=thirdparty%2Fgcc.git

Fortran: Reject semicolon after namelist name.

	PR fortran/109662

libgfortran/ChangeLog:

	* io/list_read.c: Add check for a semicolon after a namelist
	name in read input. Issue a runtime error message.

gcc/testsuite/ChangeLog:

	* gfortran.dg/pr109662-a.f90: New test.
---

diff --git a/gcc/testsuite/gfortran.dg/pr109662-a.f90 b/gcc/testsuite/gfortran.dg/pr109662-a.f90
new file mode 100644
index 000000000000..0059df28b9f3
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr109662-a.f90
@@ -0,0 +1,15 @@
+! { dg-do run }
+! { dg-options "-std=f2003" }
+! PR109662-a semi-colon after namelist name accepted on input. 
+program testnmlread
+  implicit none
+  character(16) :: list = '&stuff; n = 759/'
+  character(100)::message
+  integer       :: n, ioresult
+  namelist/stuff/n
+  message = ""
+  ioresult = 0
+  n = 99
+  read(list,nml=stuff,iostat=ioresult)
+  if (ioresult == 0) STOP 13
+end program testnmlread
diff --git a/libgfortran/io/list_read.c b/libgfortran/io/list_read.c
index 78bfd9e87875..db3330060ce1 100644
--- a/libgfortran/io/list_read.c
+++ b/libgfortran/io/list_read.c
@@ -3598,9 +3598,9 @@ find_nml_name:
 
   /* A trailing space is required, we allow a comma with std=gnu.  */
   c = next_char (dtp);
-  if (c == ',' && !(compile_options.allow_std & GFC_STD_GNU))
+  if ((c == ',' && !(compile_options.allow_std & GFC_STD_GNU)) || c == ';')
     generate_error (&dtp->common, LIBERROR_READ_VALUE,
-		    "Comma after namelist name not allowed");
+		    "Non blank after namelist name not allowed");
 
   if (!is_separator(c) && c != '!')
     {