[Bug target/71767] Endless stream of warnings when using GCC with -Wa,-q and Clang Integrated Assembler

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71767

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-09-14
                 CC|                            |howarth.at.gcc at gmail dot com,
                   |                            |iains at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I see the problem after having updated to Xcode 8.0. I am currently testing the
following patch

--- ../_clean/gcc/config/darwin-sections.def    2016-01-04 19:51:16.000000000
+0100
+++ gcc/config/darwin-sections.def      2016-09-14 12:01:44.000000000 +0200
@@ -29,7 +29,7 @@ along with GCC; see the file COPYING3.  

 /* The .text section is generated in varasm.c  */
 DEF_SECTION (text_coal_section, SECTION_CODE|SECTION_NO_ANCHOR,
-            ".section __TEXT,__textcoal_nt,coalesced,pure_instructions", 0)
+            ".section __TEXT,__text,coalesced,pure_instructions", 0)

 DEF_SECTION (text_hot_section, SECTION_CODE,
             ".section __TEXT,__text_hot,regular,pure_instructions", 0)
@@ -52,7 +52,7 @@ DEF_SECTION (text_exit_coal_section, SEC
 /* const */
 DEF_SECTION (const_section, 0, ".const", 0)
 DEF_SECTION (const_coal_section, SECTION_NO_ANCHOR,
-            ".section __TEXT,__const_coal,coalesced", 0)
+            ".section __TEXT,__const,coalesced", 0)
 /* Place to put zero-sized to avoid issues with section anchors.  */
 DEF_SECTION (zobj_const_section, SECTION_NO_ANCHOR, 
             ".section\t__DATA,__zobj_const", 0)
@@ -60,7 +60,7 @@ DEF_SECTION (zobj_const_section, SECTION
 /* Write-able data.  '.data'  handled in varasm.c  */
 DEF_SECTION (static_data_section, SECTION_WRITE, ".static_data", 0)
 DEF_SECTION (data_coal_section, SECTION_WRITE|SECTION_NO_ANCHOR,
-            ".section __DATA,__datacoal_nt,coalesced", 0)
+            ".section __DATA,__data,coalesced", 0)
 /* Place to put zero-sized to avoid issues with section anchors.  */
 DEF_SECTION (zobj_data_section, SECTION_WRITE|SECTION_NO_ANCHOR, 
             ".section\t__DATA,__zobj_data", 0)
@@ -73,7 +73,7 @@ DEF_SECTION (zobj_bss_section, SECTION_W
 /* const data */
 DEF_SECTION (const_data_section, 0, ".const_data", 0)
 DEF_SECTION (const_data_coal_section, SECTION_NO_ANCHOR,
-            ".section __DATA,__const_coal,coalesced", 0)
+            ".section __DATA,__const,coalesced", 0)
 /* Place to put zero-sized to avoid issues with section anchors.  */
 DEF_SECTION (zobj_const_data_section, SECTION_NO_ANCHOR, 
             ".section\t__DATA,__zobj_cnst_data", 0)
--- ../_clean/libffi/src/x86/sysv.S     2015-01-19 23:40:03.000000000 +0100
+++ libffi/src/x86/sysv.S       2016-09-14 12:04:05.000000000 +0200
@@ -790,7 +790,7 @@ ENDF(C(ffi_closure_raw_THISCALL))

 #ifdef X86_DARWIN
 # define COMDAT(X)                                                     \
-        .section __TEXT,__textcoal_nt,coalesced,pure_instructions;     \
+        .section __TEXT,__text,coalesced,pure_instructions;    \
         .weak_definition X;                                            \
         .private_extern X
 #elif defined __ELF__ && !(defined(__sun__) && defined(__svr4__))
--- ../_clean/gcc/testsuite/g++.dg/abi/key2.C   2014-05-10 23:18:30.000000000
+0200
+++ gcc/testsuite/g++.dg/abi/key2.C     2016-09-14 12:03:17.000000000 +0200
@@ -2,9 +2,9 @@
 // PR darwin/25908

 // { dg-do compile { target *-*-darwin* } }
-// { dg-final { scan-assembler ".globl __ZTV1f\\n      .weak_definition
__ZTV1f(\\n    .section __DATA,__const_coal,coalesced)?\\n     .align" } }
-// { dg-final { scan-assembler ".globl __ZTS1f\\n      .weak_definition
__ZTS1f\\n     .section __TEXT,__const_coal,coalesced" } }
-// { dg-final { scan-assembler ".globl __ZTI1f\\n      .weak_definition
__ZTI1f(\\n    .section __DATA,__const_coal,coalesced)?\\n     .align" } }
+// { dg-final { scan-assembler ".globl __ZTV1f\\n      .weak_definition
__ZTV1f(\\n    .section __DATA,__const,coalesced)?\\n  .align" } }
+// { dg-final { scan-assembler ".globl __ZTS1f\\n      .weak_definition
__ZTS1f\\n     .section __TEXT,__const,coalesced" } }
+// { dg-final { scan-assembler ".globl __ZTI1f\\n      .weak_definition
__ZTI1f(\\n    .section __DATA,__const,coalesced)?\\n  .align" } }

 class f
 {