-std=gnu++2a causes cpp standard to be set to c++2 in c_cpp_properties.json

[maciekr1234]

What kind of issue is this?

• PlatformIO Core.
  If you’ve found a bug, please provide an information below.

---

Configuration

Operating system: Windows 10

PlatformIO Version (platformio --version): PlatformIO, version 5.0.0

Description of problem

When I set standard to gnu++2a in GCC compiler pio doesn't match a which causes cpp extension to not set the correct standard.

I actually managed to track the issue and successfully fix the issue.

platformio-core/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl

Line 71 in 9695720

% STD_RE = re.compile(r"\-std=[a-z\+]+(\d+)")

% STD_RE = re.compile(r"\-std=[a-z\+]+([\da]+)")

platformio-core/platformio/ide/tpls/vscode/.vscode/c_cpp_properties.json.tpl

Line 118 in 9695720

"cppStandard": "c++{{ cxx_stds[-1] }}",

"cppStandard": "c++{{ cxx_stds[-1].replace('2a','20') }}",

This seems to solve the issue in cpp_config and keeps the compiler happy.

[valeros]

Hi @maciekr1234 ! Thanks for reporting. It should be fixed in the development branch. Please upgrade to the latest revision via running pio upgrade --dev command in the IDE terminal and try again. Thanks!

[maciekr1234]

@valeros works great. Thanks.