From fc1410099d6ccbb72adb54ecffd0711348706ca4 Mon Sep 17 00:00:00 2001
From: "Arnold D. Robbins" <arnold@skeeve.com>
Date: Sun, 27 Feb 2022 20:39:54 +0200
Subject: Have cant_happen() give more information.

---
 io.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index cf54cdd4..71745d24 100644
--- a/io.c
+++ b/io.c
@@ -841,7 +841,7 @@ redirect_string(const char *str, size_t explen, bool not_string,
 		what = "|&";
 		break;
 	default:
-		cant_happen();
+		cant_happen("invalid redirection type %d", (int) redirtype);
 	}
 	if (do_lint && not_string)
 		lintwarn(_("expression in `%s' redirection is a number"),
@@ -1020,7 +1020,7 @@ redirect_string(const char *str, size_t explen, bool not_string,
 			}
 			break;
 		default:
-			cant_happen();
+			cant_happen("invalid redirection type %d", (int) redirtype);
 		}
 
 		if (mode != NULL) {
@@ -1617,7 +1617,7 @@ str2mode(const char *mode)
 
 	default:
 		ret = 0;		/* lint */
-		cant_happen();
+		cant_happen("invalid open mode \"%s\"", mode);
 	}
 	if (strchr(mode, 'b') != NULL)
 		ret |= O_BINARY;
-- 
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