From 3c784ee4ffc784037d6d0f022326b95b848fbfc3 Mon Sep 17 00:00:00 2001 From: jsm28 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 +- 10 files changed, 11 insertions(+), 11 deletions(-) --- a/libgcc/config/aarch64/linux-unwind.h +++ b/libgcc/config/aarch64/linux-unwind.h @@ -52,7 +52,7 @@ struct rt_sigframe { siginfo_t info; - struct ucontext uc; + ucontext_t uc; }; struct rt_sigframe *rt_; --- a/libgcc/config/alpha/linux-unwind.h +++ b/libgcc/config/alpha/linux-unwind.h @@ -51,7 +51,7 @@ { struct rt_sigframe { siginfo_t info; - struct ucontext uc; + ucontext_t uc; } *rt_ = context->cfa; sc = &rt_->uc.uc_mcontext; } --- a/libgcc/config/bfin/linux-unwind.h +++ b/libgcc/config/bfin/linux-unwind.h @@ -52,7 +52,7 @@ 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. --- a/libgcc/config/i386/linux-unwind.h +++ b/libgcc/config/i386/linux-unwind.h @@ -58,7 +58,7 @@ 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 @@ 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 --- a/libgcc/config/m68k/linux-unwind.h +++ b/libgcc/config/m68k/linux-unwind.h @@ -33,7 +33,7 @@ /* 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]; --- a/libgcc/config/nios2/linux-unwind.h +++ b/libgcc/config/nios2/linux-unwind.h @@ -38,7 +38,7 @@ 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 */ --- a/libgcc/config/pa/linux-unwind.h +++ b/libgcc/config/pa/linux-unwind.h @@ -80,7 +80,7 @@ struct sigcontext *sc; struct rt_sigframe { siginfo_t info; - struct ucontext uc; + ucontext_t uc; } *frame; /* rt_sigreturn trampoline: --- a/libgcc/config/sh/linux-unwind.h +++ b/libgcc/config/sh/linux-unwind.h @@ -180,7 +180,7 @@ { 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 --- a/libgcc/config/tilepro/linux-unwind.h +++ b/libgcc/config/tilepro/linux-unwind.h @@ -61,7 +61,7 @@ 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. */ --- a/libgcc/config/xtensa/linux-unwind.h +++ b/libgcc/config/xtensa/linux-unwind.h @@ -63,7 +63,7 @@ struct rt_sigframe { siginfo_t info; - struct ucontext uc; + ucontext_t uc; } *rt_; /* movi a2, __NR_rt_sigreturn; syscall */