Blame SOURCES/binutils-x86-IBT-and-missing-notes.patch

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# Do not enable IBT when an object file contains code but no GNU Property notes.  (#1687774)
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diff -rup binutils.orig/bfd/elfxx-x86.c binutils-2.30/bfd/elfxx-x86.c
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--- binutils.orig/bfd/elfxx-x86.c	2019-03-13 10:19:07.715406452 +0000
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+++ binutils-2.30/bfd/elfxx-x86.c	2019-03-13 10:20:01.255975385 +0000
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@@ -2377,6 +2377,9 @@ _bfd_x86_elf_merge_gnu_properties (struc
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 	}
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       else
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 	{
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+	  /* There should be no AND properties since some input doesn't
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+	     have them.  Set IBT and SHSTK properties for -z ibt and -z
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+	     shstk if needed.  */
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 	  features = 0;
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 	  if (info->ibt)
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 	    features = GNU_PROPERTY_X86_FEATURE_1_IBT;
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@@ -2384,18 +2387,15 @@ _bfd_x86_elf_merge_gnu_properties (struc
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 	    features |= GNU_PROPERTY_X86_FEATURE_1_SHSTK;
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 	  if (features)
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 	    {
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-	      /* Add GNU_PROPERTY_X86_FEATURE_1_IBT and
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-		 GNU_PROPERTY_X86_FEATURE_1_SHSTK.  */
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 	      if (aprop != NULL)
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 		{
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-		  number = aprop->u.number;
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-		  aprop->u.number = number | features;
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-		  updated = number != (unsigned int) aprop->u.number;
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+		  updated = features != (unsigned int) aprop->u.number;
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+		  aprop->u.number = features;
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 		}
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 	      else
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 		{
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-		  bprop->u.number |= features;
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 		  updated = TRUE;
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+		  bprop->u.number = features;
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 		}
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 	    }
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 	  else if (aprop != NULL)
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diff -rup binutils.orig/ld/testsuite/ld-i386/i386.exp binutils-2.30/ld/testsuite/ld-i386/i386.exp
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--- binutils.orig/ld/testsuite/ld-i386/i386.exp	2019-03-13 10:19:07.258410131 +0000
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+++ binutils-2.30/ld/testsuite/ld-i386/i386.exp	2019-03-13 10:20:32.995719837 +0000
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@@ -473,6 +473,8 @@ run_dump_test "pr18815"
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 run_dump_test "pr19939a"
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 run_dump_test "pr19939b"
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 run_dump_test "tlsdesc2"
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+run_dump_test "pr24322a"
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+run_dump_test "pr24322b"
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 proc undefined_weak {cflags ldflags} {
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     set testname "Undefined weak symbol"
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diff -rup binutils.orig/ld/testsuite/ld-x86-64/x86-64.exp binutils-2.30/ld/testsuite/ld-x86-64/x86-64.exp
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--- binutils.orig/ld/testsuite/ld-x86-64/x86-64.exp	2019-03-13 10:19:07.323409608 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/x86-64.exp	2019-03-13 10:21:11.938406302 +0000
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@@ -593,6 +593,10 @@ run_dump_test "pr20253-5a"
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 run_dump_test "pr20253-5b"
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 run_dump_test "tlsdesc2"
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 run_dump_test "pr22048"
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+run_dump_test "pr24322a"
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+run_dump_test "pr24322a-x32"
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+run_dump_test "pr24322b"
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+run_dump_test "pr24322b-x32"
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 proc undefined_weak {cflags ldflags} {
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     set testname "Undefined weak symbol"
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-i386/pr24322a.d	2019-03-13 11:05:58.557068529 +0000
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@@ -0,0 +1,11 @@
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+#source: ../ld-x86-64/pr24322a.s
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+#source: ../ld-x86-64/pr24322b.s
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+#as: --32 
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+#ld: -z shstk -m elf_i386
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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+
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-i386/pr24322b.d	2019-03-13 11:07:19.837414751 +0000
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@@ -0,0 +1,11 @@
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+#source: ../ld-x86-64/pr24322c.s
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+#source: ../ld-x86-64/pr24322b.s
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+#as: --32 
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+#ld: -z shstk -m elf_i386
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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+
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322a.s	2019-03-13 10:20:01.256975377 +0000
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@@ -0,0 +1,27 @@
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+	.section ".note.gnu.property", "a"
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+	.long 1f - 0f		/* name length */
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+	.long 5f - 2f		/* data length */
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+	.long 5			/* note type */
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+0:	.asciz "GNU"		/* vendor name */
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+1:
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+2:	.long 0xc0000002	/* pr_type.  */
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+	.long 4f - 3f		/* pr_datasz.  */
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+3:
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+	.long 0x3
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+4:
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+5:
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322a.d	2019-03-13 11:07:47.228194433 +0000
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@@ -0,0 +1,10 @@
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+#source: pr24322a.s
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+#source: pr24322b.s
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+#as: --64 -defsym __64_bit__=1
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+#ld: -z shstk -melf_x86_64
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322a-x32.d	2019-03-13 11:10:46.635235620 +0000
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@@ -0,0 +1,10 @@
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+#source: pr24322a.s
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+#source: pr24322b.s
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+#as: --x32
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+#ld: -z shstk -m elf32_x86_64
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322b.s	2019-03-13 10:20:01.257975369 +0000
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@@ -0,0 +1,4 @@
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+	.text
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+	.global _start
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+_start:
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+	ret
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322b.d	2019-03-13 11:08:03.948059948 +0000
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@@ -0,0 +1,10 @@
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+#source: pr24322c.s
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+#source: pr24322b.s
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+#as: --64 -defsym __64_bit__=1
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+#ld: -z shstk -melf_x86_64
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322b-x32.d	2019-03-13 11:13:13.626524410 +0000
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@@ -0,0 +1,10 @@
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+#source: pr24322c.s
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+#source: pr24322b.s
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+#as: --x32
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+#ld: -z shstk -m elf32_x86_64
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+#readelf: -n
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+
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+Displaying notes found in: .note.gnu.property
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+  Owner                 Data size	Description
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+  GNU                  0x000000..	NT_GNU_PROPERTY_TYPE_0
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+      Properties: x86 feature: SHSTK
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--- /dev/null	2019-03-13 08:01:41.976955507 +0000
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+++ binutils-2.30/ld/testsuite/ld-x86-64/pr24322c.s	2019-03-13 10:20:01.257975369 +0000
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@@ -0,0 +1,27 @@
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+	.section ".note.gnu.property", "a"
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+	.long 1f - 0f		/* name length */
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+	.long 5f - 2f		/* data length */
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+	.long 5			/* note type */
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+0:	.asciz "GNU"		/* vendor name */
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+1:
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+2:	.long 0xc0000002	/* pr_type.  */
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+	.long 4f - 3f		/* pr_datasz.  */
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+3:
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+	.long 0x0
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+4:
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+.ifdef __64_bit__
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+	.p2align 3
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+.else
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+	.p2align 2
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+.endif
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+5: