[BUG] Pointer type not parsed as template argument

[JohelEGP]

Title: Pointer type not parsed as template argument.

Description:

See #456 (comment).
It's valid grammar.
I guess the error is being emitted
while parsing the expression production
without regard for the context.

Minimal reproducer (https://cpp2.godbolt.org/z/rWYevT9h7):

main: () = std::is_void_v<* i32>;

Commands:

cppfront -clean-cpp1 main.cpp2
clang++17 -std=c++23 -stdlib=libc++ -lc++abi -pedantic-errors -Wall -Wextra -Wconversion -I . main.cpp

Expected result:

Program returned: 0

Actual result and error:

Output:

main.cpp2(1,27): error: prefix '*ptr' dereference is not valid Cpp2; use postfix 'ptr*' instead

[MaxSagebaum]

This is also true for const modifier:

main: () = std::is_void_v< const i32>;

cppfront output is:

emp.cpp2...
temp.cpp2(1,34): error: ill-formed initializer (at 'i32')
temp.cpp2(1,1): error: unexpected text at end of Cpp2 code section (at 'main')
temp.cpp2(1,0): error: parse failed for section starting here

I tried to have a look at the parsing. Either the template parse needs to be elevated before the binary < operator or this error needs to be non fatal.

[JohelEGP]

That's the point of the linked issue in the description.

[MaxSagebaum]

Sorry missed that.