Author: Nikita Popov Date: 2023-07-13T14:26:25+02:00 New Revision: e98cbb95b8b96d3908a808bbcd639680a5197428
URL: https://github.com/llvm/llvm-project/commit/e98cbb95b8b96d3908a808bbcd639680a5197428 DIFF: https://github.com/llvm/llvm-project/commit/e98cbb95b8b96d3908a808bbcd639680a5197428.diff LOG: [CodeGenCXX] Add test for forward declare as array elem (NFC) To guard against the miscompile that D153142 would have introduced. Added: clang/test/CodeGenCXX/forward-declare-as-array-elem.cpp Modified: Removed: ################################################################################ diff --git a/clang/test/CodeGenCXX/forward-declare-as-array-elem.cpp b/clang/test/CodeGenCXX/forward-declare-as-array-elem.cpp new file mode 100644 index 00000000000000..0d76e32b44cb27 --- /dev/null +++ b/clang/test/CodeGenCXX/forward-declare-as-array-elem.cpp @@ -0,0 +1,20 @@ +// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 3 +// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s + +struct S; +extern S a[10]; +S(*b)[10] = &a; +struct S { + int x; +}; + +// The address calculation should be based on the size of the struct S +// declaration, not a dummy type like i8. + +// CHECK-LABEL: define dso_local noundef i32 @_Z1fv +// CHECK-SAME: () #[[ATTR0:[0-9]+]] { +// CHECK-NEXT: entry: +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr getelementptr inbounds ([10 x %struct.S], ptr @a, i64 0, i64 3), align 4 +// CHECK-NEXT: ret i32 [[TMP0]] +// +int f() { return a[3].x; } _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
