Hello,
The configure scripts check for -Wno-narrowing, but GCC ignores rather
than rejects unknown -Wno-* warnings.
Fixed by checking for the positive warning, -Wnarrowing.
OK for trunk?
Ciao!
Steven
gcc/
PR bootstrap/51388
configure.ac: Check for Wnarrowing instead of Wno-narrowing.
configure: Regenerate.
libcpp/
PR bootstrap/51388
configure.ac: Check for Wnarrowing instead of Wno-narrowing.
configure: Regenerate.
Index: gcc/configure
===================================================================
--- gcc/configure (revision 182207)
+++ gcc/configure (working copy)
@@ -6400,7 +6400,7 @@ fi
loose_warn=
save_CFLAGS="$CFLAGS"
-for option in -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual; do
+for option in -W -Wall -Wnarrowing -Wwrite-strings -Wcast-qual; do
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports
$option" >&5
Index: gcc/configure.ac
===================================================================
--- gcc/configure.ac (revision 182207)
+++ gcc/configure.ac (working copy)
@@ -333,7 +333,7 @@ GCC_STDINT_TYPES
# So, we only use -pedantic if we can disable those warnings.
ACX_PROG_CC_WARNING_OPTS(
- m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual])),
[loose_warn])
+ m4_quote(m4_do([-W -Wall -Wnarrowing -Wwrite-strings -Wcast-qual])),
[loose_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
[c_loose_warn])
Index: libcpp/configure
===================================================================
--- libcpp/configure (revision 182207)
+++ libcpp/configure (working copy)
@@ -4688,7 +4688,7 @@ test -n "$AUTOHEADER" || AUTOHEADER="$MI
warn=
save_CFLAGS="$CFLAGS"
-for option in -W -Wall -Wno-narrowing -Wwrite-strings \
+for option in -W -Wall -Wnarrowing -Wwrite-strings \
-Wmissing-format-attribute; do
as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
Index: libcpp/configure.ac
===================================================================
--- libcpp/configure.ac (revision 182207)
+++ libcpp/configure.ac (working copy)
@@ -33,7 +33,7 @@ AC_CHECK_PROGS([AUTOHEADER], [autoheader
# Figure out what compiler warnings we can enable.
# See config/warnings.m4 for details.
-ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
+ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wnarrowing -Wwrite-strings \
-Wmissing-format-attribute], [warn])
ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
-Wold-style-definition -Wc++-compat], [c_warn])
