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PiperOrigin-RevId: 940000861

src/hunspell/affixmgr.cxx

diff --git a/src/hunspell/affixmgr.cxx b/src/hunspell/affixmgr.cxx
index 89ed425..5cb2356 100644
--- a/src/hunspell/affixmgr.cxx
+++ b/src/hunspell/affixmgr.cxx
@@ -4035,6 +4035,7 @@
                                 int end = 0;
                                 FLAG * conv;
                                 while (!end) {
+                                    if (*piece == '\0') break;
                                     char * par = piece + 1;
                                     while (*par != '(' && *par != ')' && *par != '\0') par++;
                                     if (*par == '\0') end = 1; else *par = '\0';