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675767a591
When importing C++ methods into clang AST nodes from the DWARF symbol
table, preserve the DW_AT_linkage_name and use it as the linker
("asm") name for the symbol.
Concretely, this enables `expression` to call into names that use the
GNU `abi_tag` extension, and enables lldb to call into code using
std::string or std::list from recent versions of libstdc++. See
https://bugs.llvm.org/show_bug.cgi?id=35310 . It also seems broadly
more robust than relying on the DWARF->clang->codegen pipeline to
roundtrip properly, but I'm not immediately aware of any other cases
in which it makes a difference.
Patch by Nelson Elhage!
Differential Revision: https://reviews.llvm.org/D40283
llvm-svn: 328658
20 lines
293 B
C++
20 lines
293 B
C++
#include <stdio.h>
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class A {
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public:
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int __attribute__((abi_tag("cxx11"))) test_abi_tag() {
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return 1;
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}
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int test_asm_name() asm("A_test_asm") {
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return 2;
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}
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};
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int main(int argc, char **argv) {
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A a;
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// Break here
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a.test_abi_tag();
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a.test_asm_name();
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return 0;
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}
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