expander.py: trace line numbers back to the original source file #171

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Merged

yosupo06 merged 1 commit into atcoder:master from ssvb:origname

Jun 19, 2024

Merged

expander.py: trace line numbers back to the original source file #171

yosupo06 merged 1 commit into atcoder:master from ssvb:origname

Jun 19, 2024

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@ssvb ssvb commented Dec 14, 2023 •

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Using the "#line" directives, it's possible to allow compilers to report line numbers from the original source file. At least GCC and Clang support this. It's useful for tracing the compilation error locations back to the original file. Example:

 #include <iostream>
 #include <atcoder/lazysegtree>
 int main() {
 lazy_segtree<S, op, e, F, mapping, composition, id> seg(arr);
 }

== The current default behaviour: ==

$ ./expander.py example.cpp
$ g++ combined.cpp
combined.cpp: In function ‘int main()’:
combined.cpp:263:3: error: ‘lazy_segtree’ was not declared in this
 scope; did you mean ‘atcoder::lazy_segtree’?

== With the new '--origname' option: ==

$ ./expander.py --origname=example.cpp example.cpp
$ g++ combined.cpp
example.cpp: In function ‘int main()’:
example.cpp:4:3: error: ‘lazy_segtree’ was not declared in this
 scope; did you mean ‘atcoder::lazy_segtree’?

@ssvb


 expander.py: trace line numbers back to the original source file

7d6622e

Using the "#line" directives, it's possible to allow compilers to
report line numbers from the original source file. At least GCC
and Clang support this. It's useful for tracing the compilation
error locations back to the original file. Example:
 #include <iostream>
 #include <atcoder/lazysegtree>
 int main() {
 lazy_segtree<S, op, e, F, mapping, composition, id> seg(arr);
 }
== The current default behaviour: ==
$ ./expander.py example.cpp
$ g++ combined.cpp
combined.cpp: In function ‘int main()’:
combined.cpp:263:3: error: ‘lazy_segtree’ was not declared in this
 scope; did you mean ‘atcoder::lazy_segtree’?
== With the new '--origname' option: ==
$ ./expander.py --origname=example.cpp example.cpp
$ g++ combined.cpp
example.cpp: In function ‘int main()’:
example.cpp:4:3: error: ‘lazy_segtree’ was not declared in this
 scope; did you mean ‘atcoder::lazy_segtree’?