Fix printfchar test for -M.

2 files changed, 8 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index e4f980c5..1ac0efb9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2020-07-08         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* str_array.c (str_lookup): If a pure number, copy to a string. Fixes
+	at least printfchar test for MPFR, possibly some others.
+
 2020-07-07         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* awk.h: Turn all the flag defines into enums. GDB can then show
diff --git a/str_array.c b/str_array.c
index c90f7861..84bd2f02 100644
--- a/str_array.c
+++ b/str_array.c
@@ -168,9 +168,11 @@ str_lookup(NODE *symbol, NODE *subs)
 	// Special cases:
 	// 1. The string was generated using CONVFMT.
 	// 2. The string was from an unassigned variable.
-	// 3. The string was from an unassigned field.
+	// 3. The string was from a straight number, perniciously, from MPFR
+	// 4. The string was from an unassigned field.
 	if (   subs->stfmt != STFMT_UNUSED
 	    || subs == Nnull_string
+	    || (subs->flags & STRING) == 0
 	    || (subs->flags & NULL_FIELD) != 0) {
 		NODE *tmp;