PR23648 testcase

PR 23648
	* testsuite/ld-elf/pr23648.d,
	* testsuite/ld-elf/pr23648.s,
	* testsuite/ld-elf/pr23648.t: New test.

ld/ChangeLog

@@ -4,6 +4,9 @@
 	* ldlang.c (lang_process): Move lang_do_memory_regions earlier.
 	Comment on lang_do_assignments call.
 	* ldgram.y (origin_exp): Don't assign region->current.
+	* testsuite/ld-elf/pr23648.d,
+	* testsuite/ld-elf/pr23648.s,
+	* testsuite/ld-elf/pr23648.t: New test.
 
 2018-09-19  Alan Modra  <amodra@gmail.com>
 

ld/testsuite/ld-elf/pr23648.d

@@ -0,0 +1,9 @@
+#ld: --gc-sections -T pr23648.t
+#target: [check_gc_sections_available]
+#xfail: frv-*-linux* lm32-*-linux*
+#nm: -B
+
+#failif
+#...
+.*test0
+#...

ld/testsuite/ld-elf/pr23648.s

@@ -0,0 +1,15 @@
+ .text
+ .global entry, _entry
+entry:
+_entry:
+ .dc.a foo
+
+ .section .text.test0,"ax",%progbits
+ .global test0
+test0:
+ .dc.a 0
+
+ .section .text.test1,"ax",%progbits
+ .global test1
+test1:
+ .dc.a 1

ld/testsuite/ld-elf/pr23648.t

@@ -0,0 +1,10 @@
+MEMORY { code : ORIGIN = 0, LENGTH = 8M }
+
+SECTIONS
+{
+  ENTRY (entry)
+  .text 1M : { *(.text*) } >code
+  /DISCARD/ : { *(*) }
+}
+
+foo = LENGTH (code) != 8M ? test0 : test1;