I committed the patch below as obvious. Together with my recent patch
for PR 48931 this should fix PR 49214.
Index: libgfortran/runtime/backtrace.c
===================================================================
--- libgfortran/runtime/backtrace.c (revision 174394)
+++ libgfortran/runtime/backtrace.c (working copy)
@@ -95,6 +95,8 @@ fd_gets (char *s, int size, int fd)
else
{
s[i] = '\0';
+ if (i == 0)
+ return NULL;
break;
}
}
Index: libgfortran/ChangeLog
===================================================================
--- libgfortran/ChangeLog (revision 174394)
+++ libgfortran/ChangeLog (working copy)
@@ -1,5 +1,10 @@
2011-05-29 Janne Blomqvist <j...@gcc.gnu.org>
+ PR libfortran/49214
+ * runtime/backtrace.c (fd_gets): Return NULL if nothing was read.
+
+2011-05-29 Janne Blomqvist <j...@gcc.gnu.org>
+
PR libfortran/19155
* io/read.c (convert_real): Check for invalid input by comparing
endptr instead of EINVAL.
--
Janne Blomqvist
