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| author | Lucas Perlind <perlindluca@gmail.com> | 2025-04-30 19:21:00 +1000 |
|---|---|---|
| committer | Lucas Perlind <perlindluca@gmail.com> | 2025-05-06 14:55:50 +1000 |
| commit | 83bc2d3c4a186d6a8c362eed901acd6bc6363a8d (patch) | |
| tree | ea5c4b6bccb6aa226e6a3ed8036ae3fd24a1915c /src/llvm_backend_stmt.cpp | |
| parent | 8032db348411ae85397441de7f2ce9ebd1029112 (diff) | |
Add asan support for various allocators
Diffstat (limited to 'src/llvm_backend_stmt.cpp')
| -rw-r--r-- | src/llvm_backend_stmt.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/llvm_backend_stmt.cpp b/src/llvm_backend_stmt.cpp index 96a5d0db1..d5e3e4c75 100644 --- a/src/llvm_backend_stmt.cpp +++ b/src/llvm_backend_stmt.cpp @@ -2917,6 +2917,22 @@ gb_internal void lb_emit_defer_stmts(lbProcedure *p, lbDeferExitKind kind, lbBlo } defer (p->branch_location_pos = prev_token_pos); + // TODO(lucas): In LLVM 21 use the 'use-after-scope' asan option which does this for us. + #if LLVM_VERSION_MAJOR < 21 + if (kind == lbDeferExit_Return) { + for_array(i, p->asan_stack_locals) { + lbValue local = p->asan_stack_locals[i]; + + auto args = array_make<lbValue>(temporary_allocator(), 2); + args[0] = lb_emit_conv(p, local, t_rawptr); + args[1] = lb_const_int(p->module, t_int, type_size_of(local.type->Pointer.elem)); + lb_emit_runtime_call(p, "__asan_unpoison_memory_region", args); + } + } + #else + #error "Need to implement LLVM 21 'use-after-scope' asan option" + #endif + isize count = p->defer_stmts.count; isize i = count; while (i --> 0) { |