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authorKhem Raj <raj.khem@gmail.com>2015-07-09 10:52:39 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2015-07-12 22:53:18 +0100
commita8a5c58ec753a8bddc824eb15b06ad4cc8bd021e (patch)
tree763688f24d5516a43af7310b3e409bf936bb535e
parent626f7c1b848defe1fb34c2b2c3f0664dca2a8366 (diff)
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gcc-5: Backport patches for -Wno-narrowing behaviour fixes
Chromium/CEF reveals these warnings which are then treated as errors which has been fixed on gcc_5 branch upsteam. We backport the relevant commits Change-Id: I088a1480d49cdb439c72f0e159bee6de8ba94258 Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/recipes-devtools/gcc/gcc-5.1.inc8
-rw-r--r--meta/recipes-devtools/gcc/gcc-5.1/backport/0001-PR65801.patch89
-rw-r--r--meta/recipes-devtools/gcc/gcc-5.1/backport/0002-PR65858.patch63
-rw-r--r--meta/recipes-devtools/gcc/gcc-5.1/backport/0003-PR66007.patch73
4 files changed, 232 insertions, 1 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-5.1.inc b/meta/recipes-devtools/gcc/gcc-5.1.inc
index 1d64f9e4e4..255e9573fd 100644
--- a/meta/recipes-devtools/gcc/gcc-5.1.inc
+++ b/meta/recipes-devtools/gcc/gcc-5.1.inc
@@ -10,7 +10,7 @@ PV = "5.1.0"
BINV = "5.1.0"
-FILESEXTRAPATHS =. "${FILE_DIRNAME}/gcc-5.1:"
+FILESEXTRAPATHS =. "${FILE_DIRNAME}/gcc-5.1:${FILE_DIRNAME}/gcc-5.1/backport:"
DEPENDS =+ "mpfr gmp libmpc zlib"
NATIVEDEPS = "mpfr-native gmp-native libmpc-native zlib-native"
@@ -32,6 +32,7 @@ SRC_URI[sha256sum] = "b7dafdf89cbb0e20333dbf5b5349319ae06e3d1a30bf3515b5488f7e89
SRC_URI = "\
${BASEURI} \
+ ${BACKPORTS} \
file://0001-gcc-4.3.1-ARCH_FLAGS_FOR_TARGET.patch \
file://0002-uclibc-conf.patch \
file://0003-gcc-uclibc-locale-ctype_touplow_t.patch \
@@ -72,6 +73,11 @@ SRC_URI = "\
file://0038-fix-g++-sysroot.patch \
"
+BACKPORTS = "\
+ file://0001-PR65801.patch \
+ file://0002-PR65858.patch \
+ file://0003-PR66007.patch \
+ "
#S = "${TMPDIR}/work-shared/gcc-${PV}-${PR}/gcc-${SNAP}"
S = "${TMPDIR}/work-shared/gcc-${PV}-${PR}/gcc-${PV}"
B = "${WORKDIR}/gcc-${PV}/build.${HOST_SYS}.${TARGET_SYS}"
diff --git a/meta/recipes-devtools/gcc/gcc-5.1/backport/0001-PR65801.patch b/meta/recipes-devtools/gcc/gcc-5.1/backport/0001-PR65801.patch
new file mode 100644
index 0000000000..9474287033
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.1/backport/0001-PR65801.patch
@@ -0,0 +1,89 @@
+From 346ee8b5c2bf3bf0f0e681b2df5755f299aa1a68 Mon Sep 17 00:00:00 2001
+From: paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 30 Apr 2015 16:31:36 +0000
+Subject: [PATCH] /cp 2015-04-30 Paolo Carlini <paolo.carlini@oracle.com>
+
+ PR c++/65801
+ * typeck2.c (check_narrowing): In C++11 mode too, -Wno-narrowing
+ suppresses the diagnostic.
+
+2015-04-30 Paolo Carlini <paolo.carlini@oracle.com>
+
+ PR c++/65801
+ * doc/invoke.texi ([-Wnarrowing]): Update.
+
+/testsuite
+2015-04-30 Paolo Carlini <paolo.carlini@oracle.com>
+
+ PR c++/65801
+ * g++.dg/cpp0x/Wnarrowing2.C: New.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@222636 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+Upstream-Status: Backport
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+ gcc/ChangeLog | 5 +++++
+ gcc/cp/ChangeLog | 6 ++++++
+ gcc/cp/typeck2.c | 10 +++++++---
+ gcc/doc/invoke.texi | 8 ++++----
+ gcc/testsuite/ChangeLog | 5 +++++
+ gcc/testsuite/g++.dg/cpp0x/Wnarrowing2.C | 5 +++++
+ 6 files changed, 32 insertions(+), 7 deletions(-)
+ create mode 100644 gcc/testsuite/g++.dg/cpp0x/Wnarrowing2.C
+
+diff --git a/gcc/cp/typeck2.c b/gcc/cp/typeck2.c
+index 80a6939..884957b 100644
+--- a/gcc/cp/typeck2.c
++++ b/gcc/cp/typeck2.c
+@@ -957,9 +957,13 @@ check_narrowing (tree type, tree init, tsubst_flags_t complain)
+ }
+ }
+ else if (complain & tf_error)
+- error_at (EXPR_LOC_OR_LOC (init, input_location),
+- "narrowing conversion of %qE from %qT to %qT inside { }",
+- init, ftype, type);
++ {
++ global_dc->pedantic_errors = 1;
++ pedwarn (EXPR_LOC_OR_LOC (init, input_location), OPT_Wnarrowing,
++ "narrowing conversion of %qE from %qT to %qT inside { }",
++ init, ftype, type);
++ global_dc->pedantic_errors = flag_pedantic_errors;
++ }
+ }
+
+ return cxx_dialect == cxx98 || ok;
+diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
+index 520c2c5..4ef8f7f 100644
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -2703,10 +2703,10 @@ int i = @{ 2.2 @}; // error: narrowing from double to int
+
+ This flag is included in @option{-Wall} and @option{-Wc++11-compat}.
+
+-With @option{-std=c++11}, @option{-Wno-narrowing} suppresses for
+-non-constants the diagnostic required by the standard. Note that this
+-does not affect the meaning of well-formed code; narrowing conversions
+-are still considered ill-formed in SFINAE context.
++With @option{-std=c++11}, @option{-Wno-narrowing} suppresses the diagnostic
++required by the standard. Note that this does not affect the meaning
++of well-formed code; narrowing conversions are still considered
++ill-formed in SFINAE context.
+
+ @item -Wnoexcept @r{(C++ and Objective-C++ only)}
+ @opindex Wnoexcept
+diff --git a/gcc/testsuite/g++.dg/cpp0x/Wnarrowing2.C b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing2.C
+new file mode 100644
+index 0000000..fc806f9
+--- /dev/null
++++ b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing2.C
+@@ -0,0 +1,5 @@
++// PR c++/65801
++// { dg-do compile { target c++11 } }
++// { dg-options "-Wno-narrowing" }
++
++static struct zai { unsigned int x; } x = {-1};
+--
+2.1.4
+
diff --git a/meta/recipes-devtools/gcc/gcc-5.1/backport/0002-PR65858.patch b/meta/recipes-devtools/gcc/gcc-5.1/backport/0002-PR65858.patch
new file mode 100644
index 0000000000..e7a4fd792c
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.1/backport/0002-PR65858.patch
@@ -0,0 +1,63 @@
+From 82e461dc9d53927de7dae667880b63c2d497172d Mon Sep 17 00:00:00 2001
+From: paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 1 May 2015 18:47:55 +0000
+Subject: [PATCH] /cp 2015-05-01 Paolo Carlini <paolo.carlini@oracle.com>
+ Prathamesh Kulharni <prathamesh.kulkarni@linaro.org>
+
+ PR c++/65858
+ * typeck2.c (check_narrowing): Set ok = true when pedwarn returns
+ false.
+
+/testsuite
+2015-05-01 Paolo Carlini <paolo.carlini@oracle.com>
+ Prathamesh Kulharni <prathamesh.kulkarni@linaro.org>
+
+ PR c++/65858
+ * g++.dg/cpp0x/Wnarrowing3.C: New.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@222700 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+Upstream-Status: Backport
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+ gcc/cp/ChangeLog | 7 +++++++
+ gcc/cp/typeck2.c | 7 ++++---
+ gcc/testsuite/ChangeLog | 6 ++++++
+ gcc/testsuite/g++.dg/cpp0x/Wnarrowing3.C | 6 ++++++
+ 4 files changed, 23 insertions(+), 3 deletions(-)
+ create mode 100644 gcc/testsuite/g++.dg/cpp0x/Wnarrowing3.C
+
+diff --git a/gcc/cp/typeck2.c b/gcc/cp/typeck2.c
+index 884957b..9a491aa 100644
+--- a/gcc/cp/typeck2.c
++++ b/gcc/cp/typeck2.c
+@@ -959,9 +959,10 @@ check_narrowing (tree type, tree init, tsubst_flags_t complain)
+ else if (complain & tf_error)
+ {
+ global_dc->pedantic_errors = 1;
+- pedwarn (EXPR_LOC_OR_LOC (init, input_location), OPT_Wnarrowing,
+- "narrowing conversion of %qE from %qT to %qT inside { }",
+- init, ftype, type);
++ if (!pedwarn (EXPR_LOC_OR_LOC (init, input_location), OPT_Wnarrowing,
++ "narrowing conversion of %qE from %qT to %qT "
++ "inside { }", init, ftype, type))
++ ok = true;
+ global_dc->pedantic_errors = flag_pedantic_errors;
+ }
+ }
+diff --git a/gcc/testsuite/g++.dg/cpp0x/Wnarrowing3.C b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing3.C
+new file mode 100644
+index 0000000..d2dd383
+--- /dev/null
++++ b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing3.C
+@@ -0,0 +1,6 @@
++// PR c++/65858
++// { dg-do compile { target c++11 } }
++// { dg-require-effective-target lto }
++// { dg-options "-flto -Wno-narrowing" }
++
++int x { 0.5 };
+--
+2.1.4
+
diff --git a/meta/recipes-devtools/gcc/gcc-5.1/backport/0003-PR66007.patch b/meta/recipes-devtools/gcc/gcc-5.1/backport/0003-PR66007.patch
new file mode 100644
index 0000000000..7c1a19cd7f
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.1/backport/0003-PR66007.patch
@@ -0,0 +1,73 @@
+From 3b1253116b7cb98da33c997bffa5fa2616aee40a Mon Sep 17 00:00:00 2001
+From: paolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 4 May 2015 20:59:03 +0000
+Subject: [PATCH] /cp 2015-05-04 Paolo Carlini <paolo.carlini@oracle.com>
+ Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/66007
+ * typeck2.c (check_narrowing): Check by-hand that the pedwarn didn't
+ result in an actual error.
+
+/testsuite
+2015-05-04 Paolo Carlini <paolo.carlini@oracle.com>
+ Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/66007
+ * g++.dg/cpp0x/Wnarrowing4.C: New.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@222779 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+Upstream-Status: Backport
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+ gcc/cp/ChangeLog | 7 +++++++
+ gcc/cp/typeck2.c | 8 +++++---
+ gcc/testsuite/ChangeLog | 6 ++++++
+ gcc/testsuite/g++.dg/cpp0x/Wnarrowing4.C | 14 ++++++++++++++
+ 4 files changed, 32 insertions(+), 3 deletions(-)
+ create mode 100644 gcc/testsuite/g++.dg/cpp0x/Wnarrowing4.C
+
+diff --git a/gcc/cp/typeck2.c b/gcc/cp/typeck2.c
+index 9a491aa..c0df823 100644
+--- a/gcc/cp/typeck2.c
++++ b/gcc/cp/typeck2.c
+@@ -958,10 +958,12 @@ check_narrowing (tree type, tree init, tsubst_flags_t complain)
+ }
+ else if (complain & tf_error)
+ {
++ int savederrorcount = errorcount;
+ global_dc->pedantic_errors = 1;
+- if (!pedwarn (EXPR_LOC_OR_LOC (init, input_location), OPT_Wnarrowing,
+- "narrowing conversion of %qE from %qT to %qT "
+- "inside { }", init, ftype, type))
++ pedwarn (EXPR_LOC_OR_LOC (init, input_location), OPT_Wnarrowing,
++ "narrowing conversion of %qE from %qT to %qT "
++ "inside { }", init, ftype, type);
++ if (errorcount == savederrorcount)
+ ok = true;
+ global_dc->pedantic_errors = flag_pedantic_errors;
+ }
+diff --git a/gcc/testsuite/g++.dg/cpp0x/Wnarrowing4.C b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing4.C
+new file mode 100644
+index 0000000..7defce3
+--- /dev/null
++++ b/gcc/testsuite/g++.dg/cpp0x/Wnarrowing4.C
+@@ -0,0 +1,14 @@
++// PR c++/66007
++// { dg-do run { target c++11 } }
++// { dg-options "-Wno-error=narrowing" }
++
++extern "C" void abort();
++
++int main()
++{
++ unsigned foo[] = { 1, -1, 3 };
++ if (foo[0] != 1 || foo[1] != __INT_MAX__ * 2U + 1 || foo[2] != 3)
++ abort();
++}
++
++// { dg-prune-output "narrowing conversion" }
+--
+2.1.4
+