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[gcc] Fix build issue with glibc 2.27. Contributes to JB#45152
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Original file line number | Diff line number | Diff line change |
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From b7e85069238c40eae54d0ca03ab6d5470d1815f9 Mon Sep 17 00:00:00 2001 | ||
From: jsm28 <jsm28 at 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 | ||
[Romain backport from gcc-5-branch] | ||
Signed-off-by: Romain Naour <romain.naour at gmail.com> | ||
--- | ||
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 +- | ||
10 files changed, 11 insertions(+), 11 deletions(-) | ||
|
||
diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h | ||
index 6b5b3cd..d13dc34 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 b5bfd1c..166d3d2 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 dc58f0a..8b94568 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 7986928..a9d621c 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 1ba2a0c4..d67767e 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 ba4bd80..8978868 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 4a3cfff..d2ac437 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 4875706..671bde7 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 27481cf..c24d58c 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 6832d0b..cb15b4c 100644 | ||
--- a/libgcc/config/xtensa/linux-unwind.h | ||
+++ b/libgcc/config/xtensa/linux-unwind.h | ||
@@ -63,7 +63,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context, | ||
|
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struct rt_sigframe { | ||
siginfo_t info; | ||
- struct ucontext uc; | ||
+ ucontext_t uc; | ||
} *rt_; | ||
|
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/* movi a2, __NR_rt_sigreturn; syscall */ | ||
-- | ||
2.9.5 | ||
|