[LLD][ELF] - Check options before processing the -v/-version options.

This is https://bugs.llvm.org/show_bug.cgi?id=39289.

Currently both gold and bfd report errors about invalid options values
even with -v/-versions. But LLD does not.

This makes complicated to check the options available when LLD is used.

Patch makes LLD behavior to be consistent with GNU linkers.

Differential revision: https://reviews.llvm.org/D53278

llvm-svn: 344514

diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp
index 8d02592..1878d95 100644 (file)
--- a/lld/ELF/Driver.cpp
+++ b/lld/ELF/Driver.cpp
@@ -396,13 +396,6 @@ void LinkerDriver::main(ArrayRef<const char *> ArgsArr) {
   if (Args.hasArg(OPT_v) || Args.hasArg(OPT_version))
     message(getLLDVersion() + " (compatible with GNU linkers)");
 
-  // The behavior of -v or --version is a bit strange, but this is
-  // needed for compatibility with GNU linkers.
-  if (Args.hasArg(OPT_v) && !Args.hasArg(OPT_INPUT))
-    return;
-  if (Args.hasArg(OPT_version))
-    return;
-
   if (const char *Path = getReproduceOption(Args)) {
     // Note that --reproduce is a debug option so you can ignore it
     // if you are trying to understand the whole picture of the code.
@@ -421,6 +414,14 @@ void LinkerDriver::main(ArrayRef<const char *> ArgsArr) {
 
   readConfigs(Args);
   checkZOptions(Args);
+
+  // The behavior of -v or --version is a bit strange, but this is
+  // needed for compatibility with GNU linkers.
+  if (Args.hasArg(OPT_v) && !Args.hasArg(OPT_INPUT))
+    return;
+  if (Args.hasArg(OPT_version))
+    return;
+
   initLLVM();
   createFiles(Args);
   if (errorCount())

diff --git a/lld/test/ELF/driver.test b/lld/test/ELF/driver.test
index 20bc795..585800a 100644 (file)
--- a/lld/test/ELF/driver.test
+++ b/lld/test/ELF/driver.test
@@ -62,6 +62,9 @@
 # RUN: not ld.lld %t -z foo 2>&1 | FileCheck -check-prefix=ERR10 %s
 # ERR10: unknown -z value: foo
 
+## Check we report "unknown -z value" error even with -v.
+# RUN: not ld.lld %t -z foo -v 2>&1 | FileCheck -check-prefix=ERR10 %s
+
 # RUN: not ld.lld %t -z max-page-size 2>&1 | FileCheck -check-prefix=ERR11 %s
 # ERR11: unknown -z value: max-page-size