67a19dfbcb
Summary:
This patch fixes a problem with retrieving a function symbol by an address in a nested block. In the current implementation of ResolveSymbolContext function it retrieves a symbol with PDB_SymType::None and then checks if found symbol's tag equals to PDB_SymType::Function. So, if nested block's symbol was found, ResolveSymbolContext does not resolve a function.
It is very simple to reproduce this. For example, in the next program
```
int main() {
auto r = 0;
for (auto i = 1; i <= 10; i++) {
r += i & 1 + (i - 1) & 1 - 1;
}
return r;
}
```
if we will stop inside the cycle and will do a backtrace, the top element will be broken. But how we can test this? I thought to add an option to lldb-test to allow search a function by address, but the address may change when the compiler will be changed.
Patch by: Aleksandr Urakov
Reviewers: asmith, labath, zturner
Reviewed By: asmith, labath
Subscribers: stella.stamenova, llvm-commits
Differential Revision: https://reviews.llvm.org/D47939
llvm-svn: 336564
8 lines
339 B
Plaintext
8 lines
339 B
Plaintext
REQUIRES: windows, lld
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RUN: clang-cl /c /Zi %S/Inputs/FunctionNestedBlockTest.cpp /o %t.obj
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RUN: lld-link /debug:full /nodefaultlib /entry:main %t.obj /out:%t.exe
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RUN: lldb-test symbols -find=function -file FunctionNestedBlockTest.cpp -line 4 %t.exe | FileCheck %s
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CHECK: Found 1 functions:
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CHECK: name = "{{.*}}", mangled = "{{_?}}main"
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