GCC: workaround for multiple alignas priority in PartitionAddressSpace

PoolSetup in PartitionAddressSpace is declared with two alignas
specifiers when using thread isolation, one for page size, and the
other for partition cache line. C++ is expected to apply the most
strict alignas (the bigger one), but GCC gives more priority to last
one.

This has been reported in GCC at:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64236

To workaround this we change the order of the alignas declarations.

Bug: 819294
Change-Id: Ic9e7662d8aeb94957f6a1f009b02d5b5fc60c655
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4552576
Commit-Queue: José Dapena Paz <jdapena@igalia.com>
Reviewed-by: Keishi Hattori <keishi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1147775}
1 file changed
tree: 29f24acc3be2c7c683cfab5d4c95e190bdb3c0b8
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. native_client_sdk/
  33. net/
  34. pdf/
  35. ppapi/
  36. printing/
  37. remoting/
  38. rlz/
  39. sandbox/
  40. services/
  41. skia/
  42. sql/
  43. storage/
  44. styleguide/
  45. testing/
  46. third_party/
  47. tools/
  48. ui/
  49. url/
  50. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. LICENSE
  70. LICENSE.chromium_os
  71. OWNERS
  72. PRESUBMIT.py
  73. PRESUBMIT_test.py
  74. PRESUBMIT_test_mocks.py
  75. README.md
  76. WATCHLISTS
README.md

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