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| -rw-r--r-- | src/preamble.js | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/preamble.js b/src/preamble.js index 45ae0b4d..ae00b796 100644 --- a/src/preamble.js +++ b/src/preamble.js @@ -326,6 +326,7 @@ function ccall(ident, returnType, argTypes, args) { var stack = 0; function toC(value, type) { if (type == 'string') { + if (value === null || value === undefined || value === 0) return 0; // null string if (!stack) stack = Runtime.stackSave(); var ret = Runtime.stackAlloc(value.length+1); writeStringToMemory(value, ret); |