PR24827, Linker loops forever if unterminated multi-line comment in script

YY_INPUT returns 0 on end of input, not EOF.

	PR 24827
	* ldlex.l (comment): Check for 0 return from input(), not EOF.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 9fcc55c..4145096 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+2019-07-20  Alan Modra  <amodra@gmail.com>
+
+       PR 24827
+       * ldlex.l (comment): Check for 0 return from YY_INPUT, not EOF.
+
 2019-07-19  Alan Modra  <amodra@gmail.com>
 
        * testsuite/ld-powerpc/tlsgd.d,

diff --git a/ld/ldlex.l b/ld/ldlex.l
index c2abc59..a5c3ba5 100644 (file)
--- a/ld/ldlex.l
+++ b/ld/ldlex.l
@@ -675,7 +675,7 @@ comment (void)
   while (1)
     {
       c = input();
-      while (c != '*' && c != EOF)
+      while (c != '*' && c != 0)
        {
          if (c == '\n')
            lineno++;
@@ -694,7 +694,7 @@ comment (void)
       if (c == '\n')
        lineno++;
 
-      if (c == EOF)
+      if (c == 0)
        {
          einfo (_("%F%P: EOF in comment\n"));
          break;