tree 6d3f86e0ca4ce111d14c41e54a288b96d6ed822c
parent b975d9d903f7a60510393d438a086294ab086dea
author Eylon Krause <eylon1909@gmail.com> 1783274958 +0300
committer Eylon Krause <eylon1909@gmail.com> 1788421073 +0300

preprocessor: stop macro-argument scan on an unexpected/EOF token

ConsumeAndParseMacroCall's `while (parameters_size > 0)` argument loop only
handled MacroArg, ',' and ')'. An unterminated macro call (e.g. `\`FOO(` at
end of file) leaves the current token as EOF, which matches none of the
three branches, so neither token_iter nor parameters_size advances and the
loop spins forever -- a hang when linting or serving a truncated/untrusted
.sv (both reach this via AnalyzeAutomaticPreprocessFallback with
expand_macros=true). Break out on any other token; the existing trailing
loop already back-fills the remaining parameters with default TokenInfo,
the same terminal state an early ')' produces.

Note: a related path (GenerateBypassWhiteSpaces dereferencing an exhausted
generator when a macro-expansion token sequence lacks a trailing EOF
sentinel) can crash on similar input; happy to follow up separately.

Signed-off-by: Eylon Krause <eylon1909@gmail.com>