[PATCH] [compiler-rt] [asan] Refactor DescribeAddressIfStack to allow reuse for debugging API

[Kuba Brecka]

Hi kcc, glider,

Refactoring the DescribeAddressIfStack function in asan_report.cc to be able to reuse it for http://reviews.llvm.org/D4527. The plan is to use the newly extracted functions in this manner:

const char *frame_descr = t->GetFrameNameByAddr(addr, &offset, &frame_pc);
uptr n_objects = NumberOfVarsInFrame(frame_descr);
InternalScopedBuffer<StackVarDescr> vars(n_objects);
GetFrameVars(frame_descr, vars, n_objects);
for (uptr i = 0; i < n_objects; i++) {
	... do stuff ...
}

http://reviews.llvm.org/D4545

Files:
  lib/asan/asan_report.cc
  lib/asan/asan_report.h
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