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authorSergei Trofimovich <slyfox@gentoo.org>2017-10-26 07:18:54 +0000
committerSergei Trofimovich <slyfox@gentoo.org>2017-10-26 07:18:54 +0000
commitad4398c5425cf7979dfe7c9bcc7ef4d800349bd8 (patch)
tree51e38a7cdaaca2e1fbd11f6318f59db27106ce61
parentgcc/5.4.0: add missing <signal.h> inclusion to asan (diff)
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gcc/5.4.0: use 'ucontext_t' instead of 'ucontext', bug #629502
Fixes one of build failures against glibc-2.26: ./md-unwind-support.h: In function 'x86_64_fallback_frame_state': ./md-unwind-support.h:65:47: error: dereferencing pointer to incomplete type 'struct ucontext' sc = (struct sigcontext *) (void *) &uc_->uc_mcontext; ^~ Bug: https://bugs.gentoo.org/629502
-rw-r--r--src/patchsets/gcc/5.4.0/gentoo/93_all_ucontext-to-ucontext_t.patch191
-rw-r--r--src/patchsets/gcc/5.4.0/gentoo/README.history2
2 files changed, 193 insertions, 0 deletions
diff --git a/src/patchsets/gcc/5.4.0/gentoo/93_all_ucontext-to-ucontext_t.patch b/src/patchsets/gcc/5.4.0/gentoo/93_all_ucontext-to-ucontext_t.patch
new file mode 100644
index 0000000000..4da66e837f
--- /dev/null
+++ b/src/patchsets/gcc/5.4.0/gentoo/93_all_ucontext-to-ucontext_t.patch
@@ -0,0 +1,191 @@
+https://bugs.gentoo.org/629502
+
+From ecf0d1a107133c715763940c2b197aa814710e1b Mon Sep 17 00:00:00 2001
+From: jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 4 Jul 2017 10:25:10 +0000
+Subject: [PATCH] Use ucontext_t not struct ucontext in linux-unwind.h files.
+
+Current glibc no longer gives the ucontext_t type the tag struct
+ucontext, to conform with POSIX namespace rules. This requires
+various linux-unwind.h files in libgcc, that were previously using
+struct ucontext, to be fixed to use ucontext_t instead. This is
+similar to the removal of the struct siginfo tag from siginfo_t some
+years ago.
+
+This patch changes those files to use ucontext_t instead. As the
+standard name that should be unconditionally safe, so this is not
+restricted to architectures supported by glibc, or conditioned on the
+glibc version.
+
+Tested compilation together with current glibc with glibc's
+build-many-glibcs.py.
+
+ * config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+ config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+ config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+ config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+ x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+ uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+ config/pa/linux-unwind.h (pa32_fallback_frame_state),
+ config/sh/linux-unwind.h (sh_fallback_frame_state),
+ config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+ config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+ ucontext_t instead of struct ucontext.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-5-branch@249958 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ libgcc/config/aarch64/linux-unwind.h | 2 +-
+ libgcc/config/alpha/linux-unwind.h | 2 +-
+ libgcc/config/bfin/linux-unwind.h | 2 +-
+ libgcc/config/i386/linux-unwind.h | 4 ++--
+ libgcc/config/m68k/linux-unwind.h | 2 +-
+ libgcc/config/nios2/linux-unwind.h | 2 +-
+ libgcc/config/pa/linux-unwind.h | 2 +-
+ libgcc/config/sh/linux-unwind.h | 2 +-
+ libgcc/config/tilepro/linux-unwind.h | 2 +-
+ libgcc/config/xtensa/linux-unwind.h | 2 +-
+ 11 files changed, 25 insertions(+), 11 deletions(-)
+
+diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
+index 86d17b1c798..909f68f7311 100644
+--- a/libgcc/config/aarch64/linux-unwind.h
++++ b/libgcc/config/aarch64/linux-unwind.h
+@@ -52,7 +52,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
+ struct rt_sigframe
+ {
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ };
+
+ struct rt_sigframe *rt_;
+diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
+index d65474fec12..9a226b195b5 100644
+--- a/libgcc/config/alpha/linux-unwind.h
++++ b/libgcc/config/alpha/linux-unwind.h
+@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
+ {
+ struct rt_sigframe {
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_ = context->cfa;
+ sc = &rt_->uc.uc_mcontext;
+ }
+diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
+index 0c270e435c7..7fa95d2dc96 100644
+--- a/libgcc/config/bfin/linux-unwind.h
++++ b/libgcc/config/bfin/linux-unwind.h
+@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
+ void *puc;
+ char retcode[8];
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_ = context->cfa;
+
+ /* The void * cast is necessary to avoid an aliasing warning.
+diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
+index e54bf73b1fd..d35fc4566ce 100644
+--- a/libgcc/config/i386/linux-unwind.h
++++ b/libgcc/config/i386/linux-unwind.h
+@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
+ if (*(unsigned char *)(pc+0) == 0x48
+ && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
+ {
+- struct ucontext *uc_ = context->cfa;
++ ucontext_t *uc_ = context->cfa;
+ /* The void * cast is necessary to avoid an aliasing warning.
+ The aliasing warning is correct, but should not be a problem
+ because it does not alias anything. */
+@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
+ siginfo_t *pinfo;
+ void *puc;
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_ = context->cfa;
+ /* The void * cast is necessary to avoid an aliasing warning.
+ The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
+index fb79a4d63cd..b2f5ea4cd7c 100644
+--- a/libgcc/config/m68k/linux-unwind.h
++++ b/libgcc/config/m68k/linux-unwind.h
+@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ /* <sys/ucontext.h> is unfortunately broken right now. */
+ struct uw_ucontext {
+ unsigned long uc_flags;
+- struct ucontext *uc_link;
++ ucontext_t *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ unsigned long uc_filler[80];
+diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
+index dff1c20076e..1d88afecb12 100644
+--- a/libgcc/config/nios2/linux-unwind.h
++++ b/libgcc/config/nios2/linux-unwind.h
+@@ -38,7 +38,7 @@ struct nios2_mcontext {
+
+ struct nios2_ucontext {
+ unsigned long uc_flags;
+- struct ucontext *uc_link;
++ ucontext_t *uc_link;
+ stack_t uc_stack;
+ struct nios2_mcontext uc_mcontext;
+ sigset_t uc_sigmask; /* mask last for extensibility */
+diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
+index 01494685ea4..91575356803 100644
+--- a/libgcc/config/pa/linux-unwind.h
++++ b/libgcc/config/pa/linux-unwind.h
+@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
+ struct sigcontext *sc;
+ struct rt_sigframe {
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *frame;
+
+ /* rt_sigreturn trampoline:
+diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
+index e63091f287c..67033f06b4b 100644
+--- a/libgcc/config/sh/linux-unwind.h
++++ b/libgcc/config/sh/linux-unwind.h
+@@ -180,7 +180,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
+ {
+ struct rt_sigframe {
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_ = context->cfa;
+ /* The void * cast is necessary to avoid an aliasing warning.
+ The aliasing warning is correct, but should not be a problem
+diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
+index fd83ba7c275..e3c9ef0840d 100644
+--- a/libgcc/config/tilepro/linux-unwind.h
++++ b/libgcc/config/tilepro/linux-unwind.h
+@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
+ struct rt_sigframe {
+ unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_;
+
+ /* Return if this is not a signal handler. */
+diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
+index 9a67b5d2b46..98b7ea60e81 100644
+--- a/libgcc/config/xtensa/linux-unwind.h
++++ b/libgcc/config/xtensa/linux-unwind.h
+@@ -67,7 +67,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
+
+ struct rt_sigframe {
+ siginfo_t info;
+- struct ucontext uc;
++ ucontext_t uc;
+ } *rt_;
+
+ /* movi a2, __NR_rt_sigreturn; syscall */
+--
+2.14.1
+
diff --git a/src/patchsets/gcc/5.4.0/gentoo/README.history b/src/patchsets/gcc/5.4.0/gentoo/README.history
index 21bbb7a031..ef6c8e64b7 100644
--- a/src/patchsets/gcc/5.4.0/gentoo/README.history
+++ b/src/patchsets/gcc/5.4.0/gentoo/README.history
@@ -1,3 +1,5 @@
+1.6 26 Oct 2017
+ + 93_all_ucontext-to-ucontext_t.patch
1.5 24 Oct 2017
+ 92_all_asan-signal_h.patch
1.4 06 Aug 2017