[glibc/google/grte/v5-2.27/master] Additional fixes for llvm-as

[Fangrui Song <maskray@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cb908840466823a53c03da86e65118eb7467ab0b

commit cb908840466823a53c03da86e65118eb7467ab0b
Author: Josh Kunz <jkz@google.com>
Date:   Thu Jan 23 17:37:14 2020 -0800

    Additional fixes for llvm-as
    
    Unlike GCC, llvm always uses an integrated assembler, which attempts to
    recognized all `asm` statements written in the C code. glibc uses some
    syntactically invalid asm statements to emit constants into assembly that
    are later extracted with a sed or AWK script.
    
    This change fixes two such invalid `asm` statements by wrapping the
    output in a `.ascii` directive.. This does not break the sed/AWK (the same
    special sequence is output) but it makes the statement syntactically valid.
    
    See cf8e3f8757 for a previous fix for the same issue.

Diff:
---
 sysdeps/gnu/errlist.awk | 2 +-
 sysdeps/gnu/errlist.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk
index 9a5adf86a6..cc07510e10 100644
--- a/sysdeps/gnu/errlist.awk
+++ b/sysdeps/gnu/errlist.awk
@@ -105,6 +105,6 @@ END {
   print "";
   print "#ifdef EMIT_ERR_MAX";
   print "void dummy (void)"
-  print "{ asm volatile (\" @@@ %0 @@@ \" : : \"i\" (ERR_REMAP (ERR_MAX))); }"
+  print "{ asm volatile (\".ascii \\\" @@@ %0 @@@ \\\"\" : : \"i\" (ERR_REMAP (ERR_MAX))); }"
   print "#endif";
 }
diff --git a/sysdeps/gnu/errlist.c b/sysdeps/gnu/errlist.c
index 4a1c093ed0..5345df0268 100644
--- a/sysdeps/gnu/errlist.c
+++ b/sysdeps/gnu/errlist.c
@@ -1478,5 +1478,5 @@ const int _sys_nerr_internal = NERR;
 
 #ifdef EMIT_ERR_MAX
 void dummy (void)
-{ asm volatile (" @@@ %0 @@@ " : : "i" (ERR_REMAP (ERR_MAX))); }
+{ asm volatile (".ascii \" @@@ %0 @@@ \"" : : "i" (ERR_REMAP (ERR_MAX))); }
 #endif