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Add 2 testcases for PR ld/22269

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Since undefined weak symbols in static PIE are always resolved to 0 at
run-time, linker should resolve them as 0 at link-time, regardless of
whether "-z dynamic-undefined-weak" is used.  "-z dynamic-undefined-weak"
only makes undefined weak symbols dynamic, but doesn't change undefined
weak symbol resolution in static PIE at link-time.  These tests currently
pass on x86, but fails on many other targets.

The framework to resolve weak symbols in static PE at link-time is
posted at

https://sourceware.org/ml/binutils/2017-10/msg00087.html

which requires users/hjl/check_relocs branch to call check_relocs after
opening all inputs.  I will submit backend patches for failling targets
after merging users/hjl/check_relocs branch next.

	* PR ld/22269
	* testsuite/ld-elf/pr22269.s: New file.
	* testsuite/ld-elf/pr22269a.d: Likewise.
	* testsuite/ld-elf/pr22269b.d: Likewise.
This commit is contained in:
H.J. Lu 2017-10-07 03:07:36 -07:00
parent 853ee16fcd
commit 4b97e3893e
4 changed files with 40 additions and 0 deletions
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7
ld/ChangeLog
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2017-10-11 H.J. Lu <hongjiu.lu@intel.com>
* PR ld/22269
* testsuite/ld-elf/pr22269.s: New file.
* testsuite/ld-elf/pr22269a.d: Likewise.
* testsuite/ld-elf/pr22269b.d: Likewise.
2017-10-11 H.J. Lu <hongjiu.lu@intel.com>
* testsuite/ld-i386/i386.exp: Run pr19636-1j, pr19636-1k,

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ld/testsuite/ld-elf/pr22269.s Normal file
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.globl main
.globl start
.globl _start
.globl __start
.text
main:
start:
_start:
__start:
.byte 0
.section .data.rel.ro.local,"aw",%progbits
.weak func
.dc.a func

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ld/testsuite/ld-elf/pr22269a.d Normal file
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#name: PR ld/22269
#source: pr22269.s
#ld: -pie --no-dynamic-linker
#readelf: -r -x .data.rel.ro
#target: *-*-linux* *-*-gnu* *-*-nacl*
There are no relocations in this file.
Hex dump of section '.data.rel.ro':
0x[a-f0-9]+ [0 ]+[ ]+.+

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ld/testsuite/ld-elf/pr22269b.d Normal file
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#name: PR ld/22269 (-z dynamic-undefined-weak)
#source: pr22269.s
#ld: -pie --no-dynamic-linker -z dynamic-undefined-weak
#readelf: -r -x .data.rel.ro
#target: *-*-linux* *-*-gnu* *-*-nacl*
There are no relocations in this file.
Hex dump of section '.data.rel.ro':
0x[a-f0-9]+ [0 ]+[ ]+.+