From fffeac664f2e4433602ad3f34f649b078ba9e782 Mon Sep 17 00:00:00 2001
From: Thomas Lively <7121787+tlively@users.noreply.github.com>
Date: Mon, 30 Aug 2021 09:42:45 -0700
Subject: Use ModuleReader::readStdin for file "-" (#4114)

After #4106 we already treat the input file "-" as a shorthand for reading from
stdin at the file.cpp level. However, the "-" input was still treated as a
normal file name at the wasm-io.cpp file and as a result was always treated as
text input. This commit updates wasm-io.cpp to use the stdin code path
supporting both binary and text input for "-".

Fixes #4105 (again).
---
 src/wasm/wasm-io.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/wasm/wasm-io.cpp')

diff --git a/src/wasm/wasm-io.cpp b/src/wasm/wasm-io.cpp
index b8d67f4d5..b94fc8470 100644
--- a/src/wasm/wasm-io.cpp
+++ b/src/wasm/wasm-io.cpp
@@ -88,8 +88,8 @@ bool ModuleReader::isBinaryFile(std::string filename) {
 void ModuleReader::read(std::string filename,
                         Module& wasm,
                         std::string sourceMapFilename) {
-  // empty filename means read from stdin
-  if (!filename.size()) {
+  // empty filename or "-" means read from stdin
+  if (!filename.size() || filename == "-") {
     readStdin(wasm, sourceMapFilename);
     return;
   }
-- 
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