[COMMITTED 104/145] gccrs: Fix warnings

[arthur.cohen@embecosm.com]

From: jjasmine <tanghocle456@gmail.com>

gcc/rust/ChangeLog:

	* expand/rust-macro-builtins-asm.cc (parse_reg_operand):
	Fix compile warnings.
	(parse_options): Likewise.
	(parse_asm): Likewise.

gcc/testsuite/ChangeLog:

	* rust/compile/inline_asm_illegal_options.rs:
---
 gcc/rust/expand/rust-macro-builtins-asm.cc             | 10 +++++++---
 .../rust/compile/inline_asm_illegal_options.rs         |  3 +++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/gcc/rust/expand/rust-macro-builtins-asm.cc b/gcc/rust/expand/rust-macro-builtins-asm.cc
index dd053df04b2..95a268a02de 100644
--- a/gcc/rust/expand/rust-macro-builtins-asm.cc
+++ b/gcc/rust/expand/rust-macro-builtins-asm.cc
@@ -219,7 +219,6 @@ parse_reg_operand (Parser<MacroInvocLexer> &parser, TokenId last_token_id,
 
   token = parser.peek_current_token ();
 
-  bool is_explicit_reg = false;
   bool is_global_asm = inline_asm.is_global_asm;
   if (!is_global_asm && check_identifier (parser, "in"))
     {
@@ -354,7 +353,12 @@ parse_options (Parser<MacroInvocLexer> &parser, TokenId last_token_id,
 	{
 	  // TODO: Unexpected error, please return the correct error
 	  rust_error_at (token->get_locus (),
-			 "Unexpected token encountered in parse_options");
+			 "expected one of %qs, %qs, %qs, %qs, %qs, %qs, %qs, "
+			 "%qs, %qs, or %qs, found %qs",
+			 ")", "att_syntax", "may_unwind", "nomem", "noreturn",
+			 "nostack", "preserves_flags", "pure", "raw",
+			 "readonly", token->as_string ().c_str ());
+	  return -1;
 	}
       if (parser.skip_token (RIGHT_PAREN))
 	{
@@ -519,7 +523,7 @@ parse_asm (location_t invoc_locus, AST::MacroInvocData &invoc,
   if (fm_string == tl::nullopt)
     {
       rust_error_at (parser.peek_current_token ()->get_locus (),
-		     "asm template must be a string literal");
+		     "%s template must be a string literal", "asm");
       return tl::nullopt;
     }
 
diff --git a/gcc/testsuite/rust/compile/inline_asm_illegal_options.rs b/gcc/testsuite/rust/compile/inline_asm_illegal_options.rs
index bf34c4489f1..2cf354d6d12 100644
--- a/gcc/testsuite/rust/compile/inline_asm_illegal_options.rs
+++ b/gcc/testsuite/rust/compile/inline_asm_illegal_options.rs
@@ -9,5 +9,8 @@ fn main() {
     unsafe {
         asm!("nop", options(nomem, nomem)); // { dg-error "the 'nomem' option was already provided" }
         asm!("nop", options(noreturn, noreturn)); // { dg-error "the 'noreturn' option was already provided" }
+        asm!("nop", options(xxx)); // { dg-error "expected one of '\\)', 'att_syntax', 'may_unwind', 'nomem', 'noreturn', 'nostack', 'preserves_flags', 'pure', 'raw', or 'readonly', found 'xxx'" }
+        asm!("nop", options(+)); // { dg-error "expected one of '\\)', 'att_syntax', 'may_unwind', 'nomem', 'noreturn', 'nostack', 'preserves_flags', 'pure', 'raw', or 'readonly', found '\\+'" }
+
     }
 }
\ No newline at end of file
-- 
2.45.2