From: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date: Tue, 1 Aug 2023 16:32:46 +0000 (+0200)
Subject: gccrs: Supress error with proc macro crates
X-Git-Tag: basepoints/gcc-15~2152
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ccef457297594c5eadf57ec402122f260c1edc8f;p=thirdparty%2Fgcc.git

gccrs: Supress error with proc macro crates

This error was emitted when a valid proc macro crate was loaded. Proc
macros do not contain any import data for now.

gcc/rust/ChangeLog:

	* metadata/rust-imports.cc (Import::try_package_in_directory):
	Remove error when some macro are found even if no import data is
	available.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
---

diff --git a/gcc/rust/metadata/rust-imports.cc b/gcc/rust/metadata/rust-imports.cc
index fc6bcdb2d95c..17451fbcb9ba 100644
--- a/gcc/rust/metadata/rust-imports.cc
+++ b/gcc/rust/metadata/rust-imports.cc
@@ -174,9 +174,10 @@ Import::try_package_in_directory (const std::string &filename,
 
   close (fd);
 
-  rust_error_at (location,
-		 "%s exists but does not contain any Rust export data",
-		 found_filename.c_str ());
+  if (macros.empty ())
+    rust_error_at (location,
+		   "%s exists but does not contain any Rust export data",
+		   found_filename.c_str ());
 
   return std::make_pair (NULL, macros);
 }