[gcc r12-6729] Enable -Werror=format-diag during bootstrap.

[Martin Liska]

https://gcc.gnu.org/g:34ba4275dcf5162efb9b634e4665734766faf4e3

commit r12-6729-g34ba4275dcf5162efb9b634e4665734766faf4e3
Author: Martin Liska <mliska@suse.cz>
Date:   Wed Jan 19 11:54:59 2022 +0100

    Enable -Werror=format-diag during bootstrap.
    
    gcc/ChangeLog:
    
            * configure.ac: Remove -Wno-error=format-diag.
            * configure: Regenerate.

Diff:
---
 gcc/configure    | 4 ++--
 gcc/configure.ac | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/configure b/gcc/configure
index fd7227078e4..3b228c3d9dc 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -7089,7 +7089,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
 loose_warn=
 save_CXXFLAGS="$CXXFLAGS"
-for real_option in -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-error=format-diag $wf_opt; do
+for real_option in -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt; do
   # Do the check with the no- prefix removed since gcc silently
   # accepts any -Wno-* option on purpose
   case $real_option in
@@ -7147,7 +7147,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 c_loose_warn=
 save_CFLAGS="$CFLAGS"
-for real_option in -Wstrict-prototypes -Wmissing-prototypes -Wno-error=format-diag; do
+for real_option in -Wstrict-prototypes -Wmissing-prototypes ; do
   # Do the check with the no- prefix removed since gcc silently
   # accepts any -Wno-* option on purpose
   case $real_option in
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 40cfd38fe56..472d1c8c341 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -573,11 +573,11 @@ AS_IF([test $enable_build_format_warnings = no],
       [wf_opt=-Wno-format],[wf_opt=])
 ACX_PROG_CXX_WARNING_OPTS(
 	m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ],
-		       [-Wcast-qual -Wno-error=format-diag $wf_opt])),
+		       [-Wcast-qual $wf_opt])),
 		       [loose_warn])
 ACX_PROG_CC_WARNING_OPTS(
 	m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes ],
-	 	       [-Wno-error=format-diag])), [c_loose_warn])
+		       [])), [c_loose_warn])
 ACX_PROG_CXX_WARNING_OPTS(
 	m4_quote(m4_do([-Wmissing-format-attribute ],
 		       [-Woverloaded-virtual])), [strict_warn])