Package: flex
Version: 2.6.4-8.2
Severity: minor
Tags: patch
The flex binary package comes with examples under
/usr/share/doc/flex/examples/fastw .
These were from 2016 and don't work as expected with current gcc and
flex.
Attached patch fix these issues.
* need "int" for main
* need tailing "%%"
I think these may have been OK with old tool chain but they cause
trouble these days.
Now these can be compiled with
```
gcc -lfl mywc.c -o mywc
for f in 1 2 3 4 5; do
flex wc$f.l
gcc -lfl lex.yy.c -o wc$f
rm -f lex.yy.c
done
```
These example files are from upstream source under
https://salsa.debian.org/srivasta/flex/-/tree/master/examples/fastwc/
-- System Information:
Debian Release: 12.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 6.4.0-0.deb12.2-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages flex depends on:
ii debconf [debconf-2.0] 1.5.82
ii libc6 2.36-9+deb12u3
ii m4 1.4.19-3
Versions of packages flex recommends:
ii gcc [c-compiler] 4:12.2.0-3
ii gcc-12 [c-compiler] 12.2.0-14
ii libfl-dev 2.6.4-8.2
Versions of packages flex suggests:
ii bison 2:3.8.2+dfsg-1+b1
ii build-essential 12.9
ii flex-doc 2.6.4-8.2
-- no debconf information
diff -Nru fastwc-orig/mywc.c fastwc/mywc.c
--- fastwc-orig/mywc.c 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/mywc.c 2023-10-31 13:23:40.545931128 +0900
@@ -3,7 +3,7 @@
#include <stdio.h>
#include <ctype.h>
-main()
+int main()
{
int c, cc = 0, wc = 0, lc = 0;
FILE *f = stdin;
diff -Nru fastwc-orig/wc1.l fastwc/wc1.l
--- fastwc-orig/wc1.l 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/wc1.l 2023-10-31 13:23:48.742047498 +0900
@@ -17,3 +17,4 @@
printf( "%8d %8d %8d\n", lc, wc, cc );
yyterminate();
}
+%%
diff -Nru fastwc-orig/wc2.l fastwc/wc2.l
--- fastwc-orig/wc2.l 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/wc2.l 2023-10-31 13:23:58.150181074 +0900
@@ -19,3 +19,4 @@
printf( "%8d %8d %8d\n", lc, wc, cc );
yyterminate();
}
+%%
diff -Nru fastwc-orig/wc3.l fastwc/wc3.l
--- fastwc-orig/wc3.l 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/wc3.l 2023-10-31 13:24:06.806303970 +0900
@@ -23,3 +23,4 @@
printf( "%8d %8d %8d\n", lc, wc, cc );
yyterminate();
}
+%%
diff -Nru fastwc-orig/wc4.l fastwc/wc4.l
--- fastwc-orig/wc4.l 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/wc4.l 2023-10-31 13:24:21.638514548 +0900
@@ -26,3 +26,4 @@
printf( "%8d %8d %8d\n", lc, wc, cc );
yyterminate();
}
+%%
diff -Nru fastwc-orig/wc5.l fastwc/wc5.l
--- fastwc-orig/wc5.l 2016-10-21 09:43:44.000000000 +0900
+++ fastwc/wc5.l 2023-10-31 13:24:32.578669865 +0900
@@ -23,3 +23,4 @@
printf( "%8d %8d %8d\n", lc, wc, cc );
yyterminate();
}
+%%
