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authorGravatar Abseil Team <absl-team@google.com>2021-09-23 13:21:54 -0700
committerGravatar Andy Getz <durandal@google.com>2021-09-23 16:30:12 -0400
commit1ce4ceca2b2931bc4d7e470228c2dbb2f3dfea0f (patch)
tree4a01c71b72beca750a73b0cab6877f813d5d8787 /absl
parentf3a42743db4df4c98e1df690045577c775daf20b (diff)
Export of internal Abseil changes
-- 1801102e11205861bc063e067e9fd4754b625c5a by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 398562681 -- 485008445725d4013f60f4b2876f84b6b47932ec by Jorg Brown <jorg@google.com>: Replace calls to std::isinf with comparison against max(). PiperOrigin-RevId: 398534255 -- 9b99d074d39ad677cf92f99549d22bb73f504f8f by Saleem Abdulrasool <abdulras@google.com>: debugging: add support for non-glibc targets for debugging This relaxes the ELF mem_image handling and subsequently enables the VDSO support for non-glibc targets. The primary need for the restriction was the use of the `__GLIBC_PREREQ` macro. If it is undefined, assume that the glibc pre-requisite is unavailable. This allows building the debugging_internal target on musl targets. PiperOrigin-RevId: 398499050 -- 3cc3630ef2226ae1981a944573f0f9c27a527ebf by Abseil Team <absl-team@google.com>: Replace usages of `auto` with proper typedefs. PiperOrigin-RevId: 398479551 GitOrigin-RevId: 1801102e11205861bc063e067e9fd4754b625c5a Change-Id: Ib13e8612d1b263b9c1ae7f56a9f394b24c3add2e
Diffstat (limited to 'absl')
-rw-r--r--absl/container/internal/inlined_vector.h10
-rw-r--r--absl/debugging/internal/elf_mem_image.cc21
-rw-r--r--absl/debugging/internal/elf_mem_image.h4
-rw-r--r--absl/debugging/internal/vdso_support.cc19
-rw-r--r--absl/strings/numbers.cc2
5 files changed, 35 insertions, 21 deletions
diff --git a/absl/container/internal/inlined_vector.h b/absl/container/internal/inlined_vector.h
index bb365b80..e2ecf46c 100644
--- a/absl/container/internal/inlined_vector.h
+++ b/absl/container/internal/inlined_vector.h
@@ -98,7 +98,7 @@ template <typename A>
void DestroyElements(NoTypeDeduction<A>& allocator, Pointer<A> destroy_first,
SizeType<A> destroy_size) {
if (destroy_first != nullptr) {
- for (auto i = destroy_size; i != 0;) {
+ for (SizeType<A> i = destroy_size; i != 0;) {
--i;
AllocatorTraits<A>::destroy(allocator, destroy_first + i);
}
@@ -492,7 +492,7 @@ void Storage<T, N, A>::DestroyContents() {
template <typename T, size_t N, typename A>
void Storage<T, N, A>::InitFrom(const Storage& other) {
- const auto n = other.GetSize();
+ const SizeType<A> n = other.GetSize();
assert(n > 0); // Empty sources handled handled in caller.
ConstPointer<A> src;
Pointer<A> dst;
@@ -598,9 +598,9 @@ template <typename ValueAdapter>
auto Storage<T, N, A>::Resize(ValueAdapter values, SizeType<A> new_size)
-> void {
StorageView<A> storage_view = MakeStorageView();
- auto* const base = storage_view.data;
+ Pointer<A> const base = storage_view.data;
const SizeType<A> size = storage_view.size;
- auto& alloc = GetAllocator();
+ A& alloc = GetAllocator();
if (new_size <= size) {
// Destroy extra old elements.
DestroyElements<A>(alloc, base + new_size, size - new_size);
@@ -732,7 +732,7 @@ template <typename T, size_t N, typename A>
template <typename... Args>
auto Storage<T, N, A>::EmplaceBack(Args&&... args) -> Reference<A> {
StorageView<A> storage_view = MakeStorageView();
- const auto n = storage_view.size;
+ const SizeType<A> n = storage_view.size;
if (ABSL_PREDICT_TRUE(n != storage_view.capacity)) {
// Fast path; new element fits.
Pointer<A> last_ptr = storage_view.data + n;
diff --git a/absl/debugging/internal/elf_mem_image.cc b/absl/debugging/internal/elf_mem_image.cc
index 24cc0130..d6832eaf 100644
--- a/absl/debugging/internal/elf_mem_image.cc
+++ b/absl/debugging/internal/elf_mem_image.cc
@@ -22,6 +22,7 @@
#include <string.h>
#include <cassert>
#include <cstddef>
+#include "absl/base/config.h"
#include "absl/base/internal/raw_logging.h"
// From binutils/include/elf/common.h (this doesn't appear to be documented
@@ -43,11 +44,11 @@ namespace debugging_internal {
namespace {
-#if __WORDSIZE == 32
+#if __SIZEOF_POINTER__ == 4
const int kElfClass = ELFCLASS32;
int ElfBind(const ElfW(Sym) *symbol) { return ELF32_ST_BIND(symbol->st_info); }
int ElfType(const ElfW(Sym) *symbol) { return ELF32_ST_TYPE(symbol->st_info); }
-#elif __WORDSIZE == 64
+#elif __SIZEOF_POINTER__ == 8
const int kElfClass = ELFCLASS64;
int ElfBind(const ElfW(Sym) *symbol) { return ELF64_ST_BIND(symbol->st_info); }
int ElfType(const ElfW(Sym) *symbol) { return ELF64_ST_TYPE(symbol->st_info); }
@@ -175,17 +176,17 @@ void ElfMemImage::Init(const void *base) {
}
switch (base_as_char[EI_DATA]) {
case ELFDATA2LSB: {
- if (__LITTLE_ENDIAN != __BYTE_ORDER) {
- assert(false);
- return;
- }
+#ifndef ABSL_IS_LITTLE_ENDIAN
+ assert(false);
+ return;
+#endif
break;
}
case ELFDATA2MSB: {
- if (__BIG_ENDIAN != __BYTE_ORDER) {
- assert(false);
- return;
- }
+#ifndef ABSL_IS_BIG_ENDIAN
+ assert(false);
+ return;
+#endif
break;
}
default: {
diff --git a/absl/debugging/internal/elf_mem_image.h b/absl/debugging/internal/elf_mem_image.h
index 46bfade3..86474819 100644
--- a/absl/debugging/internal/elf_mem_image.h
+++ b/absl/debugging/internal/elf_mem_image.h
@@ -31,8 +31,8 @@
#error ABSL_HAVE_ELF_MEM_IMAGE cannot be directly set
#endif
-#if defined(__ELF__) && defined(__GLIBC__) && !defined(__native_client__) && \
- !defined(__asmjs__) && !defined(__wasm__)
+#if defined(__ELF__) && !defined(__native_client__) && !defined(__asmjs__) && \
+ !defined(__wasm__)
#define ABSL_HAVE_ELF_MEM_IMAGE 1
#endif
diff --git a/absl/debugging/internal/vdso_support.cc b/absl/debugging/internal/vdso_support.cc
index 6be16d90..0dfe9ca6 100644
--- a/absl/debugging/internal/vdso_support.cc
+++ b/absl/debugging/internal/vdso_support.cc
@@ -20,12 +20,25 @@
#ifdef ABSL_HAVE_VDSO_SUPPORT // defined in vdso_support.h
+#if !defined(__has_include)
+#define __has_include(header) 0
+#endif
+
#include <errno.h>
#include <fcntl.h>
+#if __has_include(<syscall.h>)
+#include <syscall.h>
+#elif __has_include(<sys/syscall.h>)
#include <sys/syscall.h>
+#endif
#include <unistd.h>
-#if __GLIBC_PREREQ(2, 16) // GLIBC-2.16 implements getauxval.
+#if defined(__GLIBC__) && \
+ (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 16))
+#define ABSL_HAVE_GETAUXVAL
+#endif
+
+#ifdef ABSL_HAVE_GETAUXVAL
#include <sys/auxv.h>
#endif
@@ -65,7 +78,7 @@ VDSOSupport::VDSOSupport()
// the operation should be idempotent.
const void *VDSOSupport::Init() {
const auto kInvalidBase = debugging_internal::ElfMemImage::kInvalidBase;
-#if __GLIBC_PREREQ(2, 16)
+#ifdef ABSL_HAVE_GETAUXVAL
if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
errno = 0;
const void *const sysinfo_ehdr =
@@ -74,7 +87,7 @@ const void *VDSOSupport::Init() {
vdso_base_.store(sysinfo_ehdr, std::memory_order_relaxed);
}
}
-#endif // __GLIBC_PREREQ(2, 16)
+#endif // ABSL_HAVE_GETAUXVAL
if (vdso_base_.load(std::memory_order_relaxed) == kInvalidBase) {
int fd = open("/proc/self/auxv", O_RDONLY);
if (fd == -1) {
diff --git a/absl/strings/numbers.cc b/absl/strings/numbers.cc
index 966d94bd..cbd84c91 100644
--- a/absl/strings/numbers.cc
+++ b/absl/strings/numbers.cc
@@ -505,7 +505,7 @@ size_t numbers_internal::SixDigitsToBuffer(double d, char* const buffer) {
*out++ = '-';
d = -d;
}
- if (std::isinf(d)) {
+ if (d > std::numeric_limits<double>::max()) {
strcpy(out, "inf"); // NOLINT(runtime/printf)
return out + 3 - buffer;
}