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changeset 255:67acad9db5b3
Fix crash when no operand is present
In cases where an instruction expects a general operand and nothing is
provided, throw a bad operand error immediately instead of waiting to crash
out with a segmentation fault.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Wed, 30 Jan 2013 21:40:34 -0700 |
| parents | 155799f6cfa5 |
| children | bc25269d96bc |
| files | lwasm/insn_gen.c |
| diffstat | 1 files changed, 6 insertions(+), 0 deletions(-) [+] |
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--- a/lwasm/insn_gen.c Wed Jan 30 21:32:14 2013 -0700 +++ b/lwasm/insn_gen.c Wed Jan 30 21:40:34 2013 -0700 @@ -41,6 +41,12 @@ int v1, tv; lw_expr_t s; + if (!**p) + { + lwasm_register_error(as, l, "Bad operand"); + return; + } + optr2 = *p; while (*optr2 && !isspace(*optr2) && *optr2 != ',') optr2++ /* do nothing */ ;