[PATCH] middle-end/107994 - ICE after error with comparison gimplification

[Richard Biener <rguenther@suse.de>]

The following avoids passing down error_mark_node to fold_convert.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

	PR middle-end/107994
	* gimplify.cc (gimplify_expr): Catch errorneous comparison
	operand.
---
 gcc/gimplify.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc
index 250782b1140..c9c800a5850 100644
--- a/gcc/gimplify.cc
+++ b/gcc/gimplify.cc
@@ -17098,6 +17098,9 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
 		 Compare scalar mode aggregates as scalar mode values.  Using
 		 memcmp for them would be very inefficient at best, and is
 		 plain wrong if bitfields are involved.  */
+	      if (error_operand_p (TREE_OPERAND (*expr_p, 1)))
+		ret = GS_ERROR;
+	      else
 		{
 		  tree type = TREE_TYPE (TREE_OPERAND (*expr_p, 1));
 
@@ -17122,9 +17125,8 @@ gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
 		    ret = gimplify_scalar_mode_aggregate_compare (expr_p);
 		  else
 		    ret = gimplify_variable_sized_compare (expr_p);
-
-		  break;
 		}
+	      break;
 
 	    /* If *EXPR_P does not need to be special-cased, handle it
 	       according to its class.  */
-- 
2.35.3