PR21287, Inconsistent section type for .init_array and .init_array.42

PR21287 notes that .init_array is correctly given a type of
SHT_INIT_ARRAY while .init_array.nnn gets SHT_PROGBITS.  This patch
fixes that problem, and properly drops warnings from the compiler that
would cause the testsuite to fail.  My a44d0bd78 change to check
ld_compile status, necessary to pick up compile errors, also meant
warnings were not ignored.

bfd/
	PR 21287
	* elf.c (special_sections_f): Match .fini_array and .fini_array.*.
	(special_sections_i): Likewise for .init_array.
	(special_sections_p): Likewise for .preinit_array.
ld/
	PR 21287
	* testsuite/ld-elf/init-fini-arrays.d: Match INIT_ARRAY and FINI_ARRAY.
	* testsuite/ld-elf/init-fini-arrays.s: Use %init_array and %fini_array
	section types.
	* testsuite/lib/ld-lib.exp (default_ld_compile): Trim assembler
	warnings about "ignoring incorrect section type".
	(run_ld_link_exec_tests, run_cc_link_tests): Delete old comment.

6 files changed, 41 insertions, 24 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index a4664f8..1d8ef2a 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2017-04-10  Alan Modra  <amodra@gmail.com>
+
+	PR 21287
+	* elf.c (special_sections_f): Match .fini_array and .fini_array.*.
+	(special_sections_i): Likewise for .init_array.
+	(special_sections_p): Likewise for .preinit_array.
+
 2017-04-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR ld/19579
diff --git a/bfd/elf.c b/bfd/elf.c
index dcb0e6f..1f02d42 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -2601,9 +2601,9 @@ static const struct bfd_elf_special_section special_sections_d[] =
 
 static const struct bfd_elf_special_section special_sections_f[] =
 {
-  { STRING_COMMA_LEN (".fini"),       0, SHT_PROGBITS,   SHF_ALLOC + SHF_EXECINSTR },
-  { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
-  { NULL,                          0, 0, 0,              0 }
+  { STRING_COMMA_LEN (".fini"),        0, SHT_PROGBITS,   SHF_ALLOC + SHF_EXECINSTR },
+  { STRING_COMMA_LEN (".fini_array"), -2, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
+  { NULL,                          0 , 0, 0,              0 }
 };
 
 static const struct bfd_elf_special_section special_sections_g[] =
@@ -2628,10 +2628,10 @@ static const struct bfd_elf_special_section special_sections_h[] =
 
 static const struct bfd_elf_special_section special_sections_i[] =
 {
-  { STRING_COMMA_LEN (".init"),       0, SHT_PROGBITS,   SHF_ALLOC + SHF_EXECINSTR },
-  { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
-  { STRING_COMMA_LEN (".interp"),     0, SHT_PROGBITS,   0 },
-  { NULL,                      0,     0, 0,              0 }
+  { STRING_COMMA_LEN (".init"),        0, SHT_PROGBITS,   SHF_ALLOC + SHF_EXECINSTR },
+  { STRING_COMMA_LEN (".init_array"), -2, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+  { STRING_COMMA_LEN (".interp"),      0, SHT_PROGBITS,   0 },
+  { NULL,                      0,      0, 0,              0 }
 };
 
 static const struct bfd_elf_special_section special_sections_l[] =
@@ -2649,9 +2649,9 @@ static const struct bfd_elf_special_section special_sections_n[] =
 
 static const struct bfd_elf_special_section special_sections_p[] =
 {
-  { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
-  { STRING_COMMA_LEN (".plt"),           0, SHT_PROGBITS,      SHF_ALLOC + SHF_EXECINSTR },
-  { NULL,                   0,           0, 0,                 0 }
+  { STRING_COMMA_LEN (".preinit_array"), -2, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
+  { STRING_COMMA_LEN (".plt"),            0, SHT_PROGBITS,      SHF_ALLOC + SHF_EXECINSTR },
+  { NULL,                   0,            0, 0,                 0 }
 };
 
 static const struct bfd_elf_special_section special_sections_r[] =
diff --git a/ld/ChangeLog b/ld/ChangeLog
index 4255b5e..4dcfd81 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,5 +1,15 @@
 2017-04-10  Alan Modra  <amodra@gmail.com>
 
+	PR 21287
+	* testsuite/ld-elf/init-fini-arrays.d: Match INIT_ARRAY and FINI_ARRAY.
+	* testsuite/ld-elf/init-fini-arrays.s: Use %init_array and %fini_array
+	section types.
+	* testsuite/lib/ld-lib.exp (default_ld_compile): Trim assembler
+	warnings about "ignoring incorrect section type".
+	(run_ld_link_exec_tests, run_cc_link_tests): Delete old comment.
+
+2017-04-10  Alan Modra  <amodra@gmail.com>
+
 	* testsuite/ld-elfvsb/elfvsb.exp (visibility_run): Delete
 	sh1p.o, sh2p.o, sh1np.o and sh2np.o before compiling.  Use
 	remote_file host exists rather than file exists.
diff --git a/ld/testsuite/ld-elf/init-fini-arrays.d b/ld/testsuite/ld-elf/init-fini-arrays.d
index 46b536c..912373d 100644
--- a/ld/testsuite/ld-elf/init-fini-arrays.d
+++ b/ld/testsuite/ld-elf/init-fini-arrays.d
@@ -7,7 +7,7 @@
 #  well with unique group sections under ld -r.
 
 #...
-  \[[ 0-9]+\] \.init_array\.01000[ \t]+PROGBITS[ \t0-9a-f]+WA?.*
+  \[[ 0-9]+\] \.init_array\.01000[ \t]+INIT_ARRAY[ \t0-9a-f]+WA?.*
 #...
-  \[[ 0-9]+\] \.fini_array\.01000[ \t]+PROGBITS[ \t0-9a-f]+WA?.*
+  \[[ 0-9]+\] \.fini_array\.01000[ \t]+FINI_ARRAY[ \t0-9a-f]+WA?.*
 #pass
diff --git a/ld/testsuite/ld-elf/init-fini-arrays.s b/ld/testsuite/ld-elf/init-fini-arrays.s
index 8f7a3f7..6740ed6 100644
--- a/ld/testsuite/ld-elf/init-fini-arrays.s
+++ b/ld/testsuite/ld-elf/init-fini-arrays.s
@@ -1,6 +1,7 @@
-        .section        .init_array.01000,"aw",%progbits
-        .align  4
-        .word 0
-        .section        .fini_array.01000,"aw",%progbits
-        .align  4
-        .word 0
+ .section .init_array.01000,"aw",%init_array
+ .p2align 2
+ .word 0
+
+ .section .fini_array.01000,"aw",%fini_array
+ .p2align 2
+ .word 0
diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index bdce739..b60fcad 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -282,6 +282,11 @@ proc default_ld_compile { cc source object } {
     remote_file build delete "ld.tmp"
     remote_file host delete "ld.tmp"
     set exec_output [prune_warnings $exec_output]
+    # Versions of gcc up to and including pre-release gcc-7, at least on
+    # some targets, generate .section directives with incorrect type.
+    # Ignore warnings from the assembler about this.
+    regsub -all "(^|\n)\[^\n\]*: ignoring incorrect section type \[^\n\]*" $exec_output "" exec_output
+    regsub -all "^\[^\n\]*: Assembler messages:\n" $exec_output "" exec_output
     if [string match "" $exec_output] then {
 	if {![file exists $object]} then {
 	    regexp ".*/(\[^/\]*)$" $source all dobj
@@ -1421,9 +1426,6 @@ proc run_ld_link_exec_tests { ldtests args } {
 	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
-	    # We ignore warnings since some compilers may generate
-	    # incorrect section attributes and the assembler will warn
-	    # them.
 	    if { [ string match "c++" $lang ] } {
 		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {
@@ -1598,9 +1600,6 @@ proc run_cc_link_tests { ldtests } {
 	    set objfile "tmpdir/$fileroot.o"
 	    lappend objfiles $objfile
 
-	    # We ignore warnings since some compilers may generate
-	    # incorrect section attributes and the assembler will warn
-	    # them.
 	    if { [ string match "c++" $lang ] } {
 		set cmd "$CXX -c $CXXFLAGS $cflags"
 	    } else {