Add frontend for fuzzing

Use the following configure command:

$ ./configure --with-fuzzer --with-fuzzer-lib=/path/to/libFuzzer.a \
      CC=clang CXX=clang++

Places an irssi-fuzz in src/fe-fuzz/ after build.

Also can specify SANFLAGS to override the chosen sanitizer flags
(defaults to "-g -fsanitize=address -fsanitize-coverage=trace-pc-guard").

1 files changed, 143 insertions, 0 deletions

diff --git a/src/fe-fuzz/tokens.txt b/src/fe-fuzz/tokens.txt
new file mode 100644
index 00000000..e337b6e9
--- /dev/null
+++ b/src/fe-fuzz/tokens.txt
@@ -0,0 +1,143 @@
+"@%+"
+"*@*!*"
+"001"
+"002"
+"003"
+"004"
+"005"
+"221"
+"254"
+"271"
+"272"
+"281"
+"301"
+"302"
+"303"
+"305"
+"306"
+"311"
+"312"
+"313"
+"314"
+"315"
+"317"
+"318"
+"319"
+"324"
+"326"
+"327"
+"328"
+"329"
+"330"
+"332"
+"333"
+"338"
+"341"
+"344"
+"345"
+"346"
+"347"
+"348"
+"349"
+"352"
+"353"
+"364"
+"365"
+"366"
+"367"
+"368"
+"369"
+"372"
+"375"
+"376"
+"377"
+"378"
+"379"
+"381"
+"386"
+"387"
+"388"
+"389"
+"396"
+"401"
+"403"
+"404"
+"405"
+"407"
+"408"
+"410"
+"421"
+"422"
+"433"
+"436"
+"437"
+"438"
+"439"
+"442"
+"465"
+"470"
+"471"
+"472"
+"473"
+"474"
+"475"
+"476"
+"477"
+"478"
+"479"
+"482"
+"486"
+"489"
+"494"
+"506"
+"707"
+"716"
+"717"
+"728"
+"729"
+"902"
+"903"
+"904"
+"905"
+"906"
+"907"
+":a"
+"+a"
+"ACK"
+"authenticate"
+"away"
+"-b"
+"+b"
+"cap"
+"#chan"
+"connected"
+"empty"
+"error"
+"invite"
+"join"
+"kick"
+"kill"
+"LS"
+"mode"
+"multi-prefix"
+"NAK"
+"network"
+"nick"
+"nicklen"
+"notice"
+"-o"
+"+o"
+"part"
+"ping"
+"pong"
+"prefix"
+"privmsg"
+"quit"
+"sasl"
+"topic"
+"wallops"
+"watch"
+":\x01"
+":\x01ACTION"
+":\x01PING"
+":\x01VERSION"