https://bugs.llvm.org/show_bug.cgi?id=41451
Bug ID: 41451
Summary: clang-cl and libc++ produce PDBs that confuse windbg /
cdb
Product: lld
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: MachO
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
C:\src\chrome\src>type test.cc
#include <string>
int main() {
std::string s = "hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii";
std::string s2 = "hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii";
return s.size() + s2.size();
}
>"third_party\llvm-build\Release+Asserts\bin\clang-cl.exe" test.cc /I
>"buildtools\third_party\libc++\trunk\include" -D_LIBCPP_NO_AUTO_LINK
>-D_LIBCPP_ABI_UNSTABLE libc++.dll.lib /Zi
>cdb -c "bp `test.cc:6`; g; dv; q" test.exe
[...]
Breakpoint 0 hit
s = class
std::__1::basic_string<char,std::__1::char_traits<char>,std::__1::allocator<char>
>
s2 = <unknown base type 80000013>
Note missing output for s2. Works fine without libc++:
>"third_party\llvm-build\Release+Asserts\bin\clang-cl.exe" test.cc /Zi
>cdb -c "bp `test.cc:6`; g; dv; q" test.exe
Breakpoint 0 hit
s = "hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii"
s2 = "hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii"
I have a local natvis thing that makes cdb print "hiiiiiii..." with libc++, but
this bug happens without that too. This is about the "<unknown base type>"
error.
Seems to happen with both link.exe and lld-link.
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