Fix fuzzing bugs in wat2wasm (#1129)

* More bugs w/ bad strings (newlines and bad escapes)
* Incorrect hex-float exponent
* Update fuzz-wat2wasm.sh to enable features

3 files changed, 20 insertions, 2 deletions

diff --git a/test/regress/regress-31.txt b/test/regress/regress-31.txt
index 404f7ad2..f72500e3 100644
--- a/test/regress/regress-31.txt
+++ b/test/regress/regress-31.txt
@@ -6,8 +6,7 @@
 out/test/regress/regress-31.txt:3:2: error: newline in string
 "
  ^
-out/test/regress/regress-31.txt:3:1: error: unexpected token "
-"", expected a module field or a module.
+out/test/regress/regress-31.txt:4:1: error: unexpected token "Invalid", expected a module field or a module.
 "
 ^
 ;;; STDERR ;;)
diff --git a/test/regress/regress-32.txt b/test/regress/regress-32.txt
new file mode 100644
index 00000000..ba7eeeb9
--- /dev/null
+++ b/test/regress/regress-32.txt
@@ -0,0 +1,8 @@
+;;; TOOL: wat2wasm
+;;; ERROR: 1
+(func f32.const 0xcab.ba6ep41e100)
+(;; STDERR ;;;
+out/test/regress/regress-32.txt:3:17: error: unexpected token "0xcab.ba6ep41e100", expected a numeric literal (e.g. 123, -45, 6.7e8).
+(func f32.const 0xcab.ba6ep41e100)
+                ^^^^^^^^^^^^^^^^^
+;;; STDERR ;;)
diff --git a/test/regress/regress-33.txt b/test/regress/regress-33.txt
new file mode 100644
index 00000000..27bd5c8c
--- /dev/null
+++ b/test/regress/regress-33.txt
@@ -0,0 +1,11 @@
+;;; TOOL: wat2wasm
+;;; ERROR: 1
+(data "\d")
+(;; STDERR ;;;
+out/test/regress/regress-33.txt:3:8: error: bad escape "\d"
+(data "\d")
+       ^^
+out/test/regress/regress-33.txt:3:7: error: unexpected token Invalid, expected ).
+(data "\d")
+      ^^^^
+;;; STDERR ;;)