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From: Adhemerval Zanella <azanella@sourceware.org>
To: glibc-cvs@sourceware.org
Subject: [glibc/azanella/clang] configure: Check
 -fno-tree-loop-distribute-patterns
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X-Git-Author: Fangrui Song <maskray@google.com>
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Date: Wed, 16 Mar 2022 18:01:25 +0000 (GMT)
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8c762dcf0c0db869eb3d5717e08345dcd53e61f4

commit 8c762dcf0c0db869eb3d5717e08345dcd53e61f4
Author: Fangrui Song <maskray@google.com>
Date:   Sun Sep 26 00:15:23 2021 -0700

    configure: Check -fno-tree-loop-distribute-patterns

Diff:
---
 configure    | 2 +-
 configure.ac | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index e810148d43..02cfdf9e47 100755
--- a/configure
+++ b/configure
@@ -6586,7 +6586,7 @@ __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns")))
 foo (void) {}
 EOF
 libc_cv_cc_loop_to_function=no
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c'
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -c conftest.c'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
diff --git a/configure.ac b/configure.ac
index ecef952dee..224e02464a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1636,7 +1636,7 @@ __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns")))
 foo (void) {}
 EOF
 libc_cv_cc_loop_to_function=no
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c])
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Werror -c conftest.c])
 then
   libc_cv_cc_loop_to_function=yes
 fi