https://github.com/abhina-sree created
https://github.com/llvm/llvm-project/pull/75339
This patch adds strnlen to the zOSSupport.h file to fix build failures in
multiple files.
>From 1b234e926dc6396fe4053f3c3463ed36e5d58778 Mon Sep 17 00:00:00 2001
From: Abhina Sreeskantharajan <abhina.sreeskanthara...@ibm.com>
Date: Wed, 13 Dec 2023 08:35:52 -0500
Subject: [PATCH] fix strnlen build failure for z/OS
---
clang/lib/Lex/HeaderMap.cpp | 1 +
llvm/include/llvm/Support/SystemZ/zOSSupport.h | 8 ++++++++
llvm/lib/ObjCopy/MachO/MachOLayoutBuilder.cpp | 1 +
llvm/lib/ObjCopy/MachO/MachOObject.cpp | 1 +
llvm/lib/ObjCopy/MachO/MachOReader.cpp | 1 +
llvm/lib/ObjectYAML/MachOEmitter.cpp | 1 +
llvm/lib/ObjectYAML/MachOYAML.cpp | 1 +
llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp | 1 +
llvm/tools/llvm-readobj/ELFDumper.cpp | 1 +
llvm/tools/llvm-readobj/ObjDumper.cpp | 1 +
llvm/tools/obj2yaml/macho2yaml.cpp | 1 +
11 files changed, 18 insertions(+)
diff --git a/clang/lib/Lex/HeaderMap.cpp b/clang/lib/Lex/HeaderMap.cpp
index 22a1532c2d9383..adc56dc270e5f0 100644
--- a/clang/lib/Lex/HeaderMap.cpp
+++ b/clang/lib/Lex/HeaderMap.cpp
@@ -20,6 +20,7 @@
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SwapByteOrder.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include "llvm/Support/Debug.h"
#include <cstring>
#include <memory>
diff --git a/llvm/include/llvm/Support/SystemZ/zOSSupport.h
b/llvm/include/llvm/Support/SystemZ/zOSSupport.h
index ee78147cb21554..f9a61f887d5dd1 100644
--- a/llvm/include/llvm/Support/SystemZ/zOSSupport.h
+++ b/llvm/include/llvm/Support/SystemZ/zOSSupport.h
@@ -35,5 +35,13 @@ inline pid_t wait4(pid_t pid, int *wstatus, int options,
return Result;
}
+// z/OS Unix System Services does not have strnlen() support, so the strnlen()
+// function is implemented here.
+inline std::size_t strnlen(const char *S, std::size_t MaxLen) {
+ const char *PtrToNullChar =
+ static_cast<const char *>(std::memchr(S, '\0', MaxLen));
+ return PtrToNullChar ? PtrToNullChar - S : MaxLen;
+}
+
#endif
#endif
diff --git a/llvm/lib/ObjCopy/MachO/MachOLayoutBuilder.cpp
b/llvm/lib/ObjCopy/MachO/MachOLayoutBuilder.cpp
index 067ef39d90522f..a3d4ba3a94f7ac 100644
--- a/llvm/lib/ObjCopy/MachO/MachOLayoutBuilder.cpp
+++ b/llvm/lib/ObjCopy/MachO/MachOLayoutBuilder.cpp
@@ -10,6 +10,7 @@
#include "llvm/Support/Alignment.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
using namespace llvm;
using namespace llvm::objcopy::macho;
diff --git a/llvm/lib/ObjCopy/MachO/MachOObject.cpp
b/llvm/lib/ObjCopy/MachO/MachOObject.cpp
index 9a4abadc8710a4..d593d6788e112f 100644
--- a/llvm/lib/ObjCopy/MachO/MachOObject.cpp
+++ b/llvm/lib/ObjCopy/MachO/MachOObject.cpp
@@ -8,6 +8,7 @@
#include "MachOObject.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include <unordered_set>
using namespace llvm;
diff --git a/llvm/lib/ObjCopy/MachO/MachOReader.cpp
b/llvm/lib/ObjCopy/MachO/MachOReader.cpp
index 25f8c020cde94d..4549977c12c3db 100644
--- a/llvm/lib/ObjCopy/MachO/MachOReader.cpp
+++ b/llvm/lib/ObjCopy/MachO/MachOReader.cpp
@@ -11,6 +11,7 @@
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/Object/MachO.h"
#include "llvm/Support/Errc.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include <memory>
using namespace llvm;
diff --git a/llvm/lib/ObjectYAML/MachOEmitter.cpp
b/llvm/lib/ObjectYAML/MachOEmitter.cpp
index 6bcc2cee27edb6..c08b389daea9c3 100644
--- a/llvm/lib/ObjectYAML/MachOEmitter.cpp
+++ b/llvm/lib/ObjectYAML/MachOEmitter.cpp
@@ -19,6 +19,7 @@
#include "llvm/Support/Error.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/LEB128.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
diff --git a/llvm/lib/ObjectYAML/MachOYAML.cpp
b/llvm/lib/ObjectYAML/MachOYAML.cpp
index 86342c5501c708..82b2eaecec9be9 100644
--- a/llvm/lib/ObjectYAML/MachOYAML.cpp
+++ b/llvm/lib/ObjectYAML/MachOYAML.cpp
@@ -14,6 +14,7 @@
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/Support/Format.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Host.h"
diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
index 2d396df7337f89..7bb0218ed53386 100644
--- a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
+++ b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
@@ -25,6 +25,7 @@
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#ifdef __linux__
#ifdef HAVE_LIBPFM
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp
b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 96564211622d26..3cf7c5a3b18955 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -57,6 +57,7 @@
#include "llvm/Support/RISCVAttributeParser.h"
#include "llvm/Support/RISCVAttributes.h"
#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cinttypes>
diff --git a/llvm/tools/llvm-readobj/ObjDumper.cpp
b/llvm/tools/llvm-readobj/ObjDumper.cpp
index 6dde3725b4d655..59060ac217e32f 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.cpp
+++ b/llvm/tools/llvm-readobj/ObjDumper.cpp
@@ -18,6 +18,7 @@
#include "llvm/Support/Error.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include "llvm/Support/raw_ostream.h"
#include <map>
diff --git a/llvm/tools/obj2yaml/macho2yaml.cpp
b/llvm/tools/obj2yaml/macho2yaml.cpp
index c006c0d2cbea4a..cdd871e8c1d684 100644
--- a/llvm/tools/obj2yaml/macho2yaml.cpp
+++ b/llvm/tools/obj2yaml/macho2yaml.cpp
@@ -15,6 +15,7 @@
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/LEB128.h"
+#include "llvm/Support/SystemZ/zOSSupport.h"
#include <string.h> // for memcpy
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