Author: Timm Baeder Date: 2025-09-11T05:08:08+02:00 New Revision: 004231aaebdcae1c735c354a9a754ec00e4523c9
URL: https://github.com/llvm/llvm-project/commit/004231aaebdcae1c735c354a9a754ec00e4523c9 DIFF: https://github.com/llvm/llvm-project/commit/004231aaebdcae1c735c354a9a754ec00e4523c9.diff LOG: [clang][bytecode] Check strlen impl for primitive arrays (#157494) Fixes #157428 Added: clang/test/AST/ByteCode/builtins.c Modified: clang/lib/AST/ByteCode/InterpBuiltin.cpp Removed: ################################################################################ diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp b/clang/lib/AST/ByteCode/InterpBuiltin.cpp index d418e0ac5d094..91deda980b57e 100644 --- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp +++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp @@ -300,6 +300,9 @@ static bool interp__builtin_strlen(InterpState &S, CodePtr OpPC, if (!CheckDummy(S, OpPC, StrPtr.block(), AK_Read)) return false; + if (!StrPtr.getFieldDesc()->isPrimitiveArray()) + return false; + assert(StrPtr.getFieldDesc()->isPrimitiveArray()); unsigned ElemSize = StrPtr.getFieldDesc()->getElemSize(); diff --git a/clang/test/AST/ByteCode/builtins.c b/clang/test/AST/ByteCode/builtins.c new file mode 100644 index 0000000000000..a51260cd3431f --- /dev/null +++ b/clang/test/AST/ByteCode/builtins.c @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -fexperimental-new-constant-interpreter %s -verify +// RUN: %clang_cc1 %s -verify=ref + +// expected-no-diagnostics +// ref-no-diagnostics + +extern __SIZE_TYPE__ strlen(const char *); + +struct str_t { + char s1[sizeof("a")]; +}; +static const struct str_t str1 = {"a"}; +#define str ((const char *)&str1) +int structStrlen(void) { + if (strlen(str) == 1) + return 0; + return 1; +} + _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
