Check the return value of various calls to lex_force_match.

[pspp] / src / language / stats / t-test-parser.c

diff --git a/src/language/stats/t-test-parser.c b/src/language/stats/t-test-parser.c
index 660997e95c25ffa4b7af3c452a7771f8a4f7f80a..7af0dfc9c606b24f72e8c5be5d44327732f78db2 100644 (file)
--- a/src/language/stats/t-test-parser.c
+++ b/src/language/stats/t-test-parser.c
@@ -80,7 +80,8 @@ cmd_t_test (struct lexer *lexer, struct dataset *ds)
          mode_count++;
          tt.mode = MODE_SINGLE;
          lex_match (lexer, T_EQUALS);
-         lex_force_num (lexer);
+         if (!lex_force_num (lexer))
+           goto parse_failed;
          testval = lex_number (lexer);
          lex_get (lexer);
        }
@@ -108,7 +109,8 @@ cmd_t_test (struct lexer *lexer, struct dataset *ds)
                  cut = false;
                }
 
-             lex_force_match (lexer, T_RPAREN);
+             if (! lex_force_match (lexer, T_RPAREN))
+               goto parse_failed;
            }
          else
            {
@@ -276,10 +278,12 @@ cmd_t_test (struct lexer *lexer, struct dataset *ds)
          if ( lex_match_id (lexer, "CIN") || lex_force_match_id (lexer, "CI"))
            if ( lex_force_match (lexer, T_LPAREN))
              {
-               lex_force_num (lexer);
+               if (!lex_force_num (lexer))
+                 goto parse_failed;
                tt.confidence = lex_number (lexer);
                lex_get (lexer);
-               lex_force_match (lexer, T_RPAREN);
+               if (! lex_force_match (lexer, T_RPAREN))
+                 goto parse_failed;
              }
        }
       else