4 files changed, 34 insertions, 0 deletions
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 0694126..ed91f24 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2011-06-30  Nick Clifton  <nickc@redhat.com>
+
+	PR 12848
+	* gas/arm/thumb-b-bad.s: New test.
+	* gas/arm/thumb-b-bad.d: Test control file.
+	* gas/arm/thumb-b-bad.l: Expected error output.
+
 2011-06-29  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* gas/mips/mips16-e.d, gas/mips/mips16-f.d,
diff --git a/gas/testsuite/gas/arm/thumb-b-bad.d b/gas/testsuite/gas/arm/thumb-b-bad.d
new file mode 100644
index 0000000..958773db
--- /dev/null
+++ b/gas/testsuite/gas/arm/thumb-b-bad.d
@@ -0,0 +1,4 @@
+#name: Out of range Thumb branches (PR 12848)
+#skip: *-*-*coff *-*-pe *-*-wince *-*-*aout* *-*-netbsd *-*-riscix*
+#as: -mthumb
+#error-output: thumb-b-bad.l
diff --git a/gas/testsuite/gas/arm/thumb-b-bad.l b/gas/testsuite/gas/arm/thumb-b-bad.l
new file mode 100644
index 0000000..0c76b4d
--- /dev/null
+++ b/gas/testsuite/gas/arm/thumb-b-bad.l
@@ -0,0 +1,6 @@
+[^:]*: Assembler messages:
+[^:]*:9: Error: branch out of range
+[^:]*:5: Error: branch out of range
+[^:]*:8: Error: branch out of range
+[^:]*:11: Error: branch out of range
+[^:]*:15: Error: branch out of range
diff --git a/gas/testsuite/gas/arm/thumb-b-bad.s b/gas/testsuite/gas/arm/thumb-b-bad.s
new file mode 100644
index 0000000..7306b79
--- /dev/null
+++ b/gas/testsuite/gas/arm/thumb-b-bad.s
@@ -0,0 +1,17 @@
+.syntax unified
+
+.type f, %function
+e:
+        b       . - 0xfffffe   @ gas mis-assembles as a forward branch
+        b       . - 0xfffffc
+        b       . + 0x1000002
+        b       . + 0x1000004  @ gas mis-assembles as a backward branch
+        b.w     . + 0x2000002  @ gas mis-assembles as a backward branch
+
+f:      b       g              @ gas mis-assembles as a backward branch
+
+        .space 0x1fffff0
+
+g:      b       f              @ gas mis-assembles as a forward branch
+
+