[PATCH] D26771: [asan] Create a .ASAN$G(A-Z) section for global registration

[Reid Kleckner via llvm-commits]

rnk created this revision.
rnk added reviewers: pcc, kcc, mehdi_amini, kubabrecka.
rnk added a subscriber: llvm-commits.
Herald added a subscriber: mgorny.

The expectation is that new instrumented code will add global variable
metadata to the .ASAN$GL section, and we will use this new code to
iterate over it.

This technique seems to break when using incremental linking, which
seems to align every global to a 256 byte boundary. Presumably this is
so that it can incrementally cope with global changing size. Clang
already passes -incremental:no as a linker flag when you invoke it to do
the link step.


https://reviews.llvm.org/D26771

Files:
  lib/asan/CMakeLists.txt
  lib/asan/asan_globals.cc
  lib/asan/asan_globals_win.cc
  lib/asan/asan_globals_win.h
  lib/asan/asan_win.cc
  lib/asan/asan_win_dll_thunk.cc
  lib/asan/asan_win_dynamic_runtime_thunk.cc
  lib/asan/tests/CMakeLists.txt
  test/asan/TestCases/Windows/global-dead-strip.c

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