[PATCH] D39148: [COFF] Add support for /WX
Shoaib Meenai via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Oct 20 15:47:10 PDT 2017
smeenai created this revision.
link.exe supports this option to convert warnings into errors, and it's
useful to support in LLD as well.
https://reviews.llvm.org/D39148
Files:
COFF/Config.h
COFF/DriverUtils.cpp
COFF/Error.cpp
COFF/Options.td
test/COFF/wx.s
Index: test/COFF/wx.s
===================================================================
--- /dev/null
+++ test/COFF/wx.s
@@ -0,0 +1,17 @@
+# REQUIRES: x86
+
+# RUN: llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o %t.obj %s
+# RUN: not lld-link /out:%t.exe /entry:main -notarealoption /WX %t.obj 2>&1 | \
+# RUN: FileCheck -check-prefix=ERROR %s
+# RUN: not lld-link /out:%t.exe /entry:main -notarealoption /WX:NO /WX %t.obj 2>&1 | \
+# RUN: FileCheck -check-prefix=ERROR %s
+# RUN: lld-link /out:%t.exe /entry:main -notarealoption /WX /WX:NO %t.obj 2>&1 | \
+# RUN: FileCheck -check-prefix=WARNING %s
+
+# ERROR: error: ignoring unknown argument: -notarealoption
+# WARNING: warning: ignoring unknown argument: -notarealoption
+
+.text
+.global main
+main:
+ ret
Index: COFF/Options.td
===================================================================
--- COFF/Options.td
+++ COFF/Options.td
@@ -84,6 +84,8 @@
def force : F<"force">,
HelpText<"Allow undefined symbols when creating executables">;
def force_unresolved : F<"force:unresolved">;
+def WX : F<"WX">, HelpText<"Treat warnings as errors">;
+def WX_no : F<"WX:no">, HelpText<"Don't treat warnings as errors">;
defm allowbind: B<"allowbind", "Disable DLL binding">;
defm allowisolation : B<"allowisolation", "Set NO_ISOLATION bit">;
@@ -146,5 +148,3 @@
def tlbout : QF<"tlbout">;
def verbose_all : QF<"verbose">;
def guardsym : QF<"guardsym">;
-
-defm wx : QB<"wx">;
Index: COFF/Error.cpp
===================================================================
--- COFF/Error.cpp
+++ COFF/Error.cpp
@@ -105,6 +105,11 @@
}
void warn(const Twine &Msg) {
+ if (Config->FatalWarnings) {
+ error(Msg);
+ return;
+ }
+
std::lock_guard<std::mutex> Lock(Mu);
print("warning: ", raw_ostream::MAGENTA);
*ErrorOS << Msg << "\n";
Index: COFF/DriverUtils.cpp
===================================================================
--- COFF/DriverUtils.cpp
+++ COFF/DriverUtils.cpp
@@ -738,6 +738,10 @@
message(Msg);
}
+ // Handle /WX early since it converts missing argument warnings to errors.
+ if (auto *Arg = Args.getLastArg(OPT_WX, OPT_WX_no))
+ Config->FatalWarnings = Arg->getOption().getID() == OPT_WX;
+
if (MissingCount)
fatal(Twine(Args.getArgString(MissingIndex)) + ": missing argument");
for (auto *Arg : Args.filtered(OPT_UNKNOWN))
Index: COFF/Config.h
===================================================================
--- COFF/Config.h
+++ COFF/Config.h
@@ -90,6 +90,7 @@
uint64_t ErrorLimit = 20;
bool Relocatable = true;
bool Force = false;
+ bool FatalWarnings = false;
bool Debug = false;
bool WriteSymtab = true;
unsigned DebugTypes = static_cast<unsigned>(DebugType::None);
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