Preprocessor: check for empty computed included

Closes #588
Vexu · Dec 14, 2023 · e7437dc · e7437dc
1 parent b269ee9
commit e7437dc
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diff --git a/src/aro/Preprocessor.zig b/src/aro/Preprocessor.zig
@@ -1295,6 +1295,7 @@ fn reconstructIncludeString(pp: *Preprocessor, param_toks: []const Token, embed_
     const params = param_toks[begin..end];
 
     if (params.len == 0) {
+        if (param_toks.len == 0) return null;
         try pp.comp.addDiagnostic(.{
             .tag = .expected_filename,
             .loc = param_toks[0].loc,

diff --git a/test/cases/empty computed include.c b/test/cases/empty computed include.c
@@ -0,0 +1,5 @@
+#define FOO
+#include FOO
+
+#define EXPECTED_ERRORS "empty computed include.c:2:10: error: expected \"FILENAME\" or <FILENAME>" \
+