binutils-gdb/ld/testsuite/ld-elf/pr17550-4.s

	.data
	.dc.a	y
	.section .data,"awG",%progbits,foo_group,comdat
	.globl	y
	.type	y, %object
	.size	y, 4
y:
	.zero	4
	.globl	x
	.type	x, %object
	.size	x, 4
x:
	.zero	4
	.globl	x_alias
	.set	x_alias,x
Strip global symbol defined in discarded section When a global symbol is defined in COMDAT group, we shouldn't leave an undefined symbol in symbol table when the symbol section is discarded unless there is a reference to the symbol outside of COMDAT group. bfd/ PR ld/17550 * elf-bfd.h (elf_link_hash_entry): Update comments for indx, documenting that indx == -3 if symbol is defined in a discarded section. * elflink.c (elf_link_add_object_symbols): Set indx to -3 if symbol is defined in a discarded section. (elf_link_output_extsym): Strip a global symbol defined in a discarded section. ld/ PR ld/17550 * testsuite/ld-elf/pr17550-1.s: New file. * testsuite/ld-elf/pr17550-2.s: Likewise. * testsuite/ld-elf/pr17550-3.s: Likewise. * testsuite/ld-elf/pr17550-4.s: Likewise. * testsuite/ld-elf/pr17550a.d: Likewise. * testsuite/ld-elf/pr17550b.d: Likewise. * testsuite/ld-elf/pr17550c.d: Likewise. * testsuite/ld-elf/pr17550d.d: Likewise. 2016-05-07 00:46:34 +08:00			`.data`
			`.dc.a y`
			`.section .data,"awG",%progbits,foo_group,comdat`
			`.globl y`
			`.type y, %object`
			`.size y, 4`
			`y:`
			`.zero 4`
			`.globl x`
			`.type x, %object`
			`.size x, 4`
			`x:`
			`.zero 4`
			`.globl x_alias`
			`.set x_alias,x`