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-rw-r--r--posix/regex.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/posix/regex.h b/posix/regex.h
index d1e4b6841a..fac441dc6d 100644
--- a/posix/regex.h
+++ b/posix/regex.h
@@ -189,7 +189,8 @@ extern reg_syntax_t re_syntax_options;
 
 #define RE_SYNTAX_GNU_AWK						\
   ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG)	\
-   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS))
+   & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS		\
+       | RE_CONTEXT_INVALID_OPS ))
 
 #define RE_SYNTAX_POSIX_AWK 						\
   (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS		\