gnu: icecat: Fix compilation against glibc 2.26.

* gnu/packages/patches/icecat-glibc-2.26.patch: New file.
* gnu/packages/gnuzilla.scm (icecat)[source](patches): Add it.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/local.mk

@@ -759,6 +759,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/icecat-bug-1414945.patch			\
   %D%/packages/patches/icecat-bug-1424373-pt2.patch		\
   %D%/packages/patches/icecat-bug-1427870-spectre-mitigation.patch	\
+  %D%/packages/patches/icecat-glibc-2.26.patch			\
   %D%/packages/patches/id3lib-CVE-2007-4460.patch			\
   %D%/packages/patches/ilmbase-fix-tests.patch			\
   %D%/packages/patches/intltool-perl-compatibility.patch	\

gnu/packages/gnuzilla.scm

@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2015 Andreas Enge <andreas@enge.fr>
-;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2014, 2015, 2016, 2017 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
 ;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
@@ -414,6 +414,7 @@ security standards.")
       (patches
        (list
         (search-patch "icecat-avoid-bundled-libraries.patch")
+        (search-patch "icecat-glibc-2.26.patch")
         (mozilla-patch "icecat-bug-546387.patch"         "d13e3fefb76e" "1b760r0bg2ydbl585wlmajljh1nlisrwxvjws5b28a3sgjy01i6k")
         (mozilla-patch "icecat-bug-1350152.patch"        "f822bda79c28" "1wf56169ca874shr6r7qx40s17h2gwj7ngmpyylrpmd1c6hipvsj")
         (mozilla-patch "icecat-bug-1388166.patch"        "fbb0bdb191d5" "1y8wpj38vw1dd6f375s9i0mrk9bd8z8gz5g70p4qynfllpkn072d")

gnu/packages/patches/icecat-glibc-2.26.patch

@@ -0,0 +1,261 @@
+Fix compilation with glibc 2.26. Patch found
+at <https://aur.archlinux.org/cgit/aur.git/plain/glibc-2.26-fix.diff?h=firefox-esr>,
+adjusted so that file names match.
+
+From 6a0b7c8ecf0734ba1bcdccf8e0ee97e721fd5420 Mon Sep 17 00:00:00 2001
+Message-Id: <6a0b7c8ecf0734ba1bcdccf8e0ee97e721fd5420.1505113337.git.jan.steffens@gmail.com>
+From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
+Date: Sat, 19 Aug 2017 20:14:25 +0200
+Subject: [PATCH] Fix use of struct ucontext (squash 2 commits)
+
+Needed for building with glibc 2.26.
+
+Bug 1385667: Use ucontext_t consistently in breakpad-client. r=ted
+MozReview-Commit-ID: AJhzJdNXP0f
+
+Bug 1394149: Fix remaining uses of ucontext in breakpad-client. r=ted
+MozReview-Commit-ID: 5tP7fXsI7dQ
+---
+ .../linux/dump_writer_common/ucontext_reader.cc    | 30 +++++++++++-----------
+ .../linux/dump_writer_common/ucontext_reader.h     | 10 ++++----
+ .../linux/handler/exception_handler.cc             | 10 ++++----
+ .../linux/handler/exception_handler.h              |  2 +-
+ .../linux/microdump_writer/microdump_writer.cc     |  2 +-
+ .../linux/minidump_writer/minidump_writer.cc       |  2 +-
+ 6 files changed, 28 insertions(+), 28 deletions(-)
+
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.cc b/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.cc
+index 999960912e459e1b..303c0ebd32b663c4 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.cc
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.cc
+@@ -40,15 +40,15 @@ namespace google_breakpad {
+ 
+ #if defined(__i386__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_ESP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_EIP];
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct _libc_fpstate* fp) {
+   const greg_t* regs = uc->uc_mcontext.gregs;
+ 
+@@ -88,15 +88,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
+ 
+ #elif defined(__x86_64)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_RSP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[REG_RIP];
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct _libc_fpstate* fpregs) {
+   const greg_t* regs = uc->uc_mcontext.gregs;
+ 
+@@ -145,15 +145,15 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
+ 
+ #elif defined(__ARM_EABI__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.arm_sp;
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.arm_pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc) {
+   out->context_flags = MD_CONTEXT_ARM_FULL;
+ 
+   out->iregs[0] = uc->uc_mcontext.arm_r0;
+@@ -184,41 +184,41 @@ void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
+ 
+ #elif defined(__aarch64__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.sp;
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc,
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                                     const struct fpsimd_context* fpregs) {
+   out->context_flags = MD_CONTEXT_ARM64_FULL;
+ 
+   out->cpsr = static_cast<uint32_t>(uc->uc_mcontext.pstate);
+   for (int i = 0; i < MD_CONTEXT_ARM64_REG_SP; ++i)
+     out->iregs[i] = uc->uc_mcontext.regs[i];
+   out->iregs[MD_CONTEXT_ARM64_REG_SP] = uc->uc_mcontext.sp;
+   out->iregs[MD_CONTEXT_ARM64_REG_PC] = uc->uc_mcontext.pc;
+ 
+   out->float_save.fpsr = fpregs->fpsr;
+   out->float_save.fpcr = fpregs->fpcr;
+   my_memcpy(&out->float_save.regs, &fpregs->vregs,
+       MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT * 16);
+ }
+ 
+ #elif defined(__mips__)
+ 
+-uintptr_t UContextReader::GetStackPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetStackPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.gregs[MD_CONTEXT_MIPS_REG_SP];
+ }
+ 
+-uintptr_t UContextReader::GetInstructionPointer(const struct ucontext* uc) {
++uintptr_t UContextReader::GetInstructionPointer(const ucontext_t* uc) {
+   return uc->uc_mcontext.pc;
+ }
+ 
+-void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext *uc) {
++void UContextReader::FillCPUContext(RawContextCPU *out, const ucontext_t *uc) {
+ #if _MIPS_SIM == _ABI64
+   out->context_flags = MD_CONTEXT_MIPS64_FULL;
+ #elif _MIPS_SIM == _ABIO32
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.h b/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.h
+index c533e28ba7441e83..039752a2dfb6e589 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.h
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/dump_writer_common/ucontext_reader.h
+@@ -41,21 +41,21 @@ namespace google_breakpad {
+ 
+ // Wraps platform-dependent implementations of accessors to ucontext structs.
+ struct UContextReader {
+-  static uintptr_t GetStackPointer(const struct ucontext* uc);
++  static uintptr_t GetStackPointer(const ucontext_t* uc);
+ 
+-  static uintptr_t GetInstructionPointer(const struct ucontext* uc);
++  static uintptr_t GetInstructionPointer(const ucontext_t* uc);
+ 
+   // Juggle a arch-specific ucontext into a minidump format
+   //   out: the minidump structure
+   //   info: the collection of register structures.
+ #if defined(__i386__) || defined(__x86_64)
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc,
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                              const struct _libc_fpstate* fp);
+ #elif defined(__aarch64__)
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc,
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc,
+                              const struct fpsimd_context* fpregs);
+ #else
+-  static void FillCPUContext(RawContextCPU *out, const ucontext *uc);
++  static void FillCPUContext(RawContextCPU *out, const ucontext_t *uc);
+ #endif
+ };
+ 
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.cc b/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.cc
+index 71a51a763938e39d..12df9bc96ec45fea 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.cc
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.cc
+@@ -439,44 +439,44 @@ bool ExceptionHandler::HandleSignal(int sig, siginfo_t* info, void* uc) {
+   // Fill in all the holes in the struct to make Valgrind happy.
+   memset(&g_crash_context_, 0, sizeof(g_crash_context_));
+   memcpy(&g_crash_context_.siginfo, info, sizeof(siginfo_t));
+-  memcpy(&g_crash_context_.context, uc, sizeof(struct ucontext));
++  memcpy(&g_crash_context_.context, uc, sizeof(ucontext_t));
+ #if defined(__aarch64__)
+-  struct ucontext* uc_ptr = (struct ucontext*)uc;
++  ucontext_t* uc_ptr = (ucontext_t*)uc;
+   struct fpsimd_context* fp_ptr =
+       (struct fpsimd_context*)&uc_ptr->uc_mcontext.__reserved;
+   if (fp_ptr->head.magic == FPSIMD_MAGIC) {
+     memcpy(&g_crash_context_.float_state, fp_ptr,
+            sizeof(g_crash_context_.float_state));
+   }
+ #elif !defined(__ARM_EABI__) && !defined(__mips__)
+   // FP state is not part of user ABI on ARM Linux.
+-  // In case of MIPS Linux FP state is already part of struct ucontext
++  // In case of MIPS Linux FP state is already part of ucontext_t
+   // and 'float_state' is not a member of CrashContext.
+-  struct ucontext* uc_ptr = (struct ucontext*)uc;
++  ucontext_t* uc_ptr = (ucontext_t*)uc;
+   if (uc_ptr->uc_mcontext.fpregs) {
+     memcpy(&g_crash_context_.float_state, uc_ptr->uc_mcontext.fpregs,
+            sizeof(g_crash_context_.float_state));
+   }
+ #endif
+   g_crash_context_.tid = syscall(__NR_gettid);
+   if (crash_handler_ != NULL) {
+     if (crash_handler_(&g_crash_context_, sizeof(g_crash_context_),
+                        callback_context_)) {
+       return true;
+     }
+   }
+   return GenerateDump(&g_crash_context_);
+ }
+ 
+ // This is a public interface to HandleSignal that allows the client to
+ // generate a crash dump. This function may run in a compromised context.
+ bool ExceptionHandler::SimulateSignalDelivery(int sig) {
+   siginfo_t siginfo = {};
+   // Mimic a trusted signal to allow tracing the process (see
+   // ExceptionHandler::HandleSignal().
+   siginfo.si_code = SI_USER;
+   siginfo.si_pid = getpid();
+-  struct ucontext context;
++  ucontext_t context;
+   getcontext(&context);
+   return HandleSignal(sig, &siginfo, &context);
+ }
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.h b/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.h
+index 711586fec7ddae59..be1880170e2826b0 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.h
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/handler/exception_handler.h
+@@ -191,7 +191,7 @@ class ExceptionHandler {
+   struct CrashContext {
+     siginfo_t siginfo;
+     pid_t tid;  // the crashing thread.
+-    struct ucontext context;
++    ucontext_t context;
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+     // #ifdef this out because FP state is not part of user ABI for Linux ARM.
+     // In case of MIPS Linux FP state is already part of struct
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/microdump_writer/microdump_writer.cc b/toolkit/crashreporter/google-breakpad/src/client/linux/microdump_writer/microdump_writer.cc
+index ff20bf36584c876b..a0b90e08fc5f0cff 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/microdump_writer/microdump_writer.cc
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/microdump_writer/microdump_writer.cc
+@@ -571,7 +571,7 @@ class MicrodumpWriter {
+ 
+   void* Alloc(unsigned bytes) { return dumper_->allocator()->Alloc(bytes); }
+ 
+-  const struct ucontext* const ucontext_;
++  const ucontext_t* const ucontext_;
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+   const google_breakpad::fpstate_t* const float_state_;
+ #endif
+diff --git a/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/minidump_writer.cc b/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/minidump_writer.cc
+index 0650bb95c179464a..6b5304bcd605ca3a 100644
+--- a/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/minidump_writer.cc
++++ b/toolkit/crashreporter/google-breakpad/src/client/linux/minidump_writer/minidump_writer.cc
+@@ -1247,7 +1247,7 @@ class MinidumpWriter {
+   const int fd_;  // File descriptor where the minidum should be written.
+   const char* path_;  // Path to the file where the minidum should be written.
+ 
+-  const struct ucontext* const ucontext_;  // also from the signal handler
++  const ucontext_t* const ucontext_;  // also from the signal handler
+ #if !defined(__ARM_EABI__) && !defined(__mips__)
+   const google_breakpad::fpstate_t* const float_state_;  // ditto
+ #endif
+-- 
+2.14.1