Add 2 testcases for PR ld/22269

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.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 17192529fedef6b53c3bfa26b38558c16101e370..43fa479b727f4777e97da9b085f1be8466acb216 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,10 @@
+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,

diff --git a/ld/testsuite/ld-elf/pr22269.s b/ld/testsuite/ld-elf/pr22269.s
new file mode 100644 (file)
index 0000000..71c1c06
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr22269.s
@@ -0,0 +1,13 @@
+       .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

diff --git a/ld/testsuite/ld-elf/pr22269a.d b/ld/testsuite/ld-elf/pr22269a.d
new file mode 100644 (file)
index 0000000..d993d19
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr22269a.d
@@ -0,0 +1,10 @@
+#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 ]+[ ]+.+

diff --git a/ld/testsuite/ld-elf/pr22269b.d b/ld/testsuite/ld-elf/pr22269b.d
new file mode 100644 (file)
index 0000000..8810922
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr22269b.d
@@ -0,0 +1,10 @@
+#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 ]+[ ]+.+