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authorBjörn Gustavsson <[email protected]>2016-08-11 12:56:06 +0200
committerBjörn Gustavsson <[email protected]>2016-09-02 14:24:36 +0200
commit8a04dd4dd2d479efe488b0bed118e10559835fb6 (patch)
tree26a67662082f018a3c5a556b5ae6868f9775817e /lib/debugger/test
parent0e7c0d4eb8dd8f6f9a9ee377fa886edbae0b1627 (diff)
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Don't crash when obsolete guard overrides local function
The compiler would crash in v3_codegen when trying to compile the following code: is_port(_) -> false. foo(P) when port(P) -> ok. We *could* have the compiler interpret the code as: is_port(_) -> false. foo(P) when erlang:is_port(P) -> ok. But that would encourage using the obsolete form of the guard tests. Note that the following code is illegal: is_port(_) -> false. foo(P) when is_port(P) -> ok. It produces the following diagnostic: call to local/imported function is_port/1 is illegal in guard Therefore, we should refuse to compile the code.
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