Author: ngie
Date: Sat Jul 30 04:40:44 2016
New Revision: 303538
URL: https://svnweb.freebsd.org/changeset/base/303538

Log:
  Explicitly test for cu_fgets returning NULL or !NULL
  
  MFC after: 3 weeks
  Sponsored by: EMC / Isilon Storage Division

Modified:
  head/usr.bin/sed/compile.c

Modified: head/usr.bin/sed/compile.c
==============================================================================
--- head/usr.bin/sed/compile.c  Sat Jul 30 03:43:55 2016        (r303537)
+++ head/usr.bin/sed/compile.c  Sat Jul 30 04:40:44 2016        (r303538)
@@ -546,7 +546,7 @@ compile_subst(const char *p, struct s_su
                        if ((text = realloc(text, asize)) == NULL)
                                err(1, "realloc");
                }
-       } while ((p = cu_fgets(&more)));
+       } while ((p = cu_fgets(&more)) != NULL);
        errx(1, "%lu: %s: unterminated substitute in regular expression",
                        linenum, fname);
        /* NOTREACHED */
@@ -733,7 +733,7 @@ compile_text(size_t *ptlen)
        if ((text = malloc(asize)) == NULL)
                err(1, "malloc");
        size = 0;
-       while ((p = cu_fgets(NULL))) {
+       while ((p = cu_fgets(NULL)) != NULL) {
                op = s = text + size;
                for (esc_nl = 0; *p != '\0'; p++) {
                        if (*p == '\\' && p[1] != '\0' && *++p == '\n')
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