checker: check redefine global 'main' function (#13803)
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894080b844
commit
0337882240
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@ -2097,6 +2097,10 @@ fn (mut c Checker) global_decl(mut node ast.GlobalDecl) {
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c.error('unknown type `$sym.name`', field.typ_pos)
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}
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if field.has_expr {
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if field.expr is ast.AnonFn && field.name == 'main' {
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c.error('the `main` function is the program entry point, cannot redefine it',
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field.pos)
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}
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field.typ = c.expr(field.expr)
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mut v := c.file.global_scope.find_global(field.name) or {
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panic('internal compiler error - could not find global in scope')
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@ -0,0 +1,3 @@
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vlib/v/checker/tests/globals/redefine_main.vv:1:10: error: the `main` function is the program entry point, cannot redefine it
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1 | __global main = fn () int { return 22 }
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| ~~~~
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@ -0,0 +1 @@
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__global main = fn () int { return 22 }
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