[binutils-gdb] Add a compile-time test for PR ld/22269

[H.J.Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f3012016f008030b48597b578a5fb1e550907374

commit f3012016f008030b48597b578a5fb1e550907374
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Oct 20 09:47:08 2017 -0700

    Add a compile-time test for PR ld/22269
    
    This compile-time test requires a target C compiler to run.  It fails
    on many targets where ELF backend linkers fail to check undefined weak
    symbol in static PIE via UNDEFWEAK_NO_DYNAMIC_RELOC.
    
    	PR ld/22269
    	* testsuite/ld-elf/pr22269-1.rd: New file.
    	* testsuite/ld-elf/pr22269-1.c: Likewise.
    	* testsuite/ld-elf/shared.exp: Run pr22269-1.

Diff:
---
 ld/ChangeLog                     |  7 +++++++
 ld/testsuite/ld-elf/pr22269-1.c  |  8 ++++++++
 ld/testsuite/ld-elf/pr22269-1.rd |  5 +++++
 ld/testsuite/ld-elf/shared.exp   | 13 +++++++++++++
 4 files changed, 33 insertions(+)

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 586420a..7cd9e7c 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,10 @@
+2017-10-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR ld/22269
+	* testsuite/ld-elf/pr22269-1.rd: New file.
+	* testsuite/ld-elf/pr22269-1.c: Likewise.
+	* testsuite/ld-elf/shared.exp: Run pr22269-1.
+
 2017-10-19  Palmer Dabbelt  <palmer@dabbelt.com>
 
 	* emultempl/riscvelf.em (riscv_elf_before_allocation): Add a
diff --git a/ld/testsuite/ld-elf/pr22269-1.c b/ld/testsuite/ld-elf/pr22269-1.c
new file mode 100644
index 0000000..8197687
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr22269-1.c
@@ -0,0 +1,8 @@
+extern int foo __attribute ((weak));
+
+int
+_start (void)
+{
+  if (&foo)
+    return foo;
+}
diff --git a/ld/testsuite/ld-elf/pr22269-1.rd b/ld/testsuite/ld-elf/pr22269-1.rd
new file mode 100644
index 0000000..9df3c38
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr22269-1.rd
@@ -0,0 +1,5 @@
+# NONE relocs are not needed in a PIE.
+#failif
+#...
+[0-9a-f]+ +[0-9a-f]+ +R_.*_NONE.*
+#pass
diff --git a/ld/testsuite/ld-elf/shared.exp b/ld/testsuite/ld-elf/shared.exp
index 6e091c9..640d324 100644
--- a/ld/testsuite/ld-elf/shared.exp
+++ b/ld/testsuite/ld-elf/shared.exp
@@ -465,6 +465,19 @@ set build_tests {
 
 run_cc_link_tests $build_tests
 
+run_ld_link_tests [list \
+    [list \
+	"Build pr22269-1" \
+	"-pie -e _start --no-dynamic-linker -z text" \
+	"" \
+	"" \
+	{ pr22269-1.c } \
+	{{readelf -rW pr22269-1.rd}} \
+	"pr22269-1" \
+	"-fPIE -O2" \
+    ] \
+]
+
 set run_tests [list \
     [list "Run normal with libfoo.so" \
      "-Wl,--no-as-needed tmpdir/begin.o tmpdir/libfoo.so tmpdir/end.o" "" \