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https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=224128
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2007-01-25  Jan Kratochvil <jan.kratochvil@redhat.com>
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	* gdb.base/charsign.exp, gdb.base/charsign.c: New files.
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	[ stripped ]
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2007-10-19  Jan Kratochvil <jan.kratochvil@redhat.com>
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	Port to GDB-6.7 - only the testcase left, patch has been reverted,
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	char-vectors restricted.
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Index: gdb-7.10.90.20160211/gdb/testsuite/gdb.base/charsign.c
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===================================================================
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--- /dev/null	1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.10.90.20160211/gdb/testsuite/gdb.base/charsign.c	2016-02-15 23:26:06.429811778 +0100
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@@ -0,0 +1,37 @@
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+/* This testcase is part of GDB, the GNU debugger.
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+
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+   Copyright 2007 Free Software Foundation, Inc.
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+
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+   This program is free software; you can redistribute it and/or modify
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+   it under the terms of the GNU General Public License as published by
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+   the Free Software Foundation; either version 2 of the License, or
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+   (at your option) any later version.
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+
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+   This program is distributed in the hope that it will be useful,
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+   but WITHOUT ANY WARRANTY; without even the implied warranty of
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+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+   GNU General Public License for more details.
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+ 
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+   You should have received a copy of the GNU General Public License
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+   along with this program; if not, write to the Free Software
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+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+   Please email any bugs, comments, and/or additions to this file to:
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+   bug-gdb@prep.ai.mit.edu  */
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+
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+int main()
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+{
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+  return 0;
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+}
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+
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+char n[]="A";
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+signed char s[]="A";
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+unsigned char u[]="A";
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+
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+typedef char char_n;
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+typedef signed char char_s;
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+typedef unsigned char char_u;
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+
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+char_n n_typed[]="A";
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+char_s s_typed[]="A";
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+char_u u_typed[]="A";
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Index: gdb-7.10.90.20160211/gdb/testsuite/gdb.base/charsign.exp
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===================================================================
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--- /dev/null	1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.10.90.20160211/gdb/testsuite/gdb.base/charsign.exp	2016-02-15 23:26:12.409854237 +0100
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@@ -0,0 +1,63 @@
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+# Copyright 2007 Free Software Foundation, Inc.
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+
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+# 
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+# GNU General Public License for more details.
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+# 
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
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+
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+set testfile charsign
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+set srcfile ${testfile}.c
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+set binfile [standard_output_file ${testfile}]
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+
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+proc do_test { cflags } {
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+    global srcdir
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+    global binfile
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+    global subdir
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+    global srcfile
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+    global gdb_prompt
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+
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+    if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug additional_flags=$cflags]] != "" } {
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+	untested "Couldn't compile test program"
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+	return -1
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+    }
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+
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+    # Get things started.
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+
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+    gdb_exit
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+    gdb_start
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+    gdb_reinitialize_dir $srcdir/$subdir
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+    gdb_load ${binfile}
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+
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+    # For C programs, "start" should stop in main().
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+
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+    gdb_test "p n" \
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+	     "= \"A\""
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+    gdb_test "p s" \
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+	     "= \\{65 'A', 0 '\\\\0'\\}"
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+    gdb_test "p u" \
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+	     "= \\{65 'A', 0 '\\\\0'\\}"
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+    gdb_test "p n_typed" \
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+	     "= \"A\""
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+    gdb_test "p s_typed" \
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+	     "= \\{65 'A', 0 '\\\\0'\\}"
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+    gdb_test "p u_typed" \
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+	     "= \\{65 'A', 0 '\\\\0'\\}"
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+}
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+
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+# The string identification works despite the compiler flags below due to
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+# gdbtypes.c:
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+#   if (name && strcmp (name, "char") == 0)
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+#     TYPE_FLAGS (type) |= TYPE_FLAG_NOSIGN;
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+
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+do_test {}
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+do_test {-fsigned-char}
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+do_test {-funsigned-char}