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Patch from http://bugs.debian.org/cgi-bin/bugreport.cgi/flex-lvalue.diff?bug=194844;msg=10;att=1
according to posix 0,1,2 are already setup and this avoids
the issues with
| filter.c: In function 'filter_apply_chain':
| filter.c:161: error: invalid lvalue in assignment
| filter.c:163: error: invalid lvalue in assignment
| filter.c:184: error: invalid lvalue in assignment
diff -ur flex-2.5.31.ORIG/filter.c flex-2.5.31/filter.c
--- flex-2.5.31.ORIG/filter.c 2003-03-25 16:39:08.000000000 +0000
+++ flex-2.5.31/filter.c 2003-05-27 17:00:26.000000000 +0000
@@ -157,11 +157,8 @@
if (chain->filter_func) {
int r;
- /* setup streams again */
- if ((stdin = fdopen (0, "r")) == NULL)
- flexfatal (_("fdopen(0) failed"));
- if ((stdout = fdopen (1, "w")) == NULL)
- flexfatal (_("fdopen(1) failed"));
+ /* POSIX says we inherit fd[0-2], so we don't need
+ to do anything to them here */
if ((r = chain->filter_func (chain)) == -1)
flexfatal (_("filter_func failed"));
@@ -181,8 +178,6 @@
if (dup2 (pipes[1], 1) == -1)
flexfatal (_("dup2(pipes[1],1)"));
close (pipes[1]);
- if ((stdout = fdopen (1, "w")) == NULL)
- flexfatal (_("fdopen(1) failed"));
return true;
}
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