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Update from C++17 to C++20#8218

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sbc100 merged 1 commit into
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cxx20
Mar 30, 2026
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Update from C++17 to C++20#8218
sbc100 merged 1 commit into
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cxx20

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@sbc100

@sbc100 sbc100 commented Jan 17, 2026 •
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As a test I converted all the set::count calls to set::contains when
they were used for membership testing.
@sbc100 sbc100 force-pushed the cxx20 branch 2 times, most recently from 5973b98 to 86d1856 Compare January 17, 2026 23:35
@sbc100 sbc100 requested a review from tlively January 17, 2026 23:38
@sbc100

sbc100 commented Jan 17, 2026

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Is it time?
@sbc100 sbc100 requested a review from kripken January 17, 2026 23:39
@tlively

tlively commented Jan 18, 2026

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Sounds good to me. I wonder what's up with ICE in wasm-type-printer.h. Maybe try removing assertValidUsage, or at least excluding it in the MSVC build?
@kripken

kripken commented Jan 20, 2026

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See #6060 (comment) from @dschuff about c++20
@dschuff

dschuff commented Jan 20, 2026

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Yeah, that's something to look into. Also it looks like there are some other gcc-isms like the -fno-rrti flag that also need to be filtered out.
@sbc100 sbc100 requested a review from a team as a code owner March 30, 2026 18:58
sbc100 added a commit that referenced this pull request Mar 30, 2026
@sbc100
Add contains() to custom containers and use where possible. NFC
a3b9ac2 
This matches the C++20 API that we cannot quite use yet.  At least not
until #8218 lands.
@sbc100 sbc100 mentioned this pull request Mar 30, 2026
Merged
sbc100 added a commit that referenced this pull request Mar 30, 2026
@sbc100
Add contains() to custom containers and use where possible. NFC
0b4dd1e 
This matches the C++20 API that we cannot quite use yet.  At least not
until #8218 lands.
@sbc100 sbc100 force-pushed the cxx20 branch 2 times, most recently from 91760b9 to e29758c Compare March 30, 2026 21:09
sbc100 added a commit that referenced this pull request Mar 30, 2026
@sbc100
Add contains() to custom containers and use where possible. NFC
ec66094 
This matches the C++20 API that we cannot quite use yet.  At least not
until #8218 lands.
sbc100 added a commit that referenced this pull request Mar 30, 2026
@sbc100
Add contains() to custom containers and use where possible. NFC
cc6c5e3 
This matches the C++20 API that we cannot quite use yet.  At least not
until #8218 lands.
sbc100 added a commit that referenced this pull request Mar 30, 2026
@sbc100
Add contains() to custom containers and use where possible. NFC (#8547)
8d9af32 
This matches the C++20 API that we cannot quite use yet. At least not
until #8218 lands.
@sbc100
Update from C++17 to C++20
8b3d5ac 
As a test I converted all the `set::count` calls to `set::contains` when
they were used for membership testing.
@sbc100 sbc100 merged commit b6eba84 into main Mar 30, 2026
15 checks passed
@sbc100 sbc100 deleted the cxx20 branch March 30, 2026 23:53
@sbc100 sbc100 mentioned this pull request Jun 23, 2026
Merged
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
93e272a 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.

Also, bump gtest submodule from 1.12.0 to 1.17.0 to fix some new
compiler warnings.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
3f250ed 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.

Also, bump gtest submodule from 1.12.0 to 1.17.0 to fix some new
compiler warnings.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
cfb885d 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.

Also, bump gtest submodule from v1.12.0 to v1.17.0 to fix some new
compiler warnings.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
33329f0 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
6f985e4 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20
0e7cce4 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but
I don't think we need to support building on such old versions of
macOS here.  We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.
sbc100 added a commit to WebAssembly/wabt that referenced this pull request Jun 23, 2026
@sbc100
Update from C++17 to C++20 (#2772)
deeb6f3 
Binaryen did this a while back in
WebAssembly/binaryen#8218.

There we a couple of issue related to building on macOS 13.2.1 but I
don't think we need to support building on such old versions of macOS
here. We still support deploying to macOS 10.14 via
CMAKE_OSX_DEPLOYMENT_TARGET.

Use std::string::starts_with and std::string_view::starts_with in
various places now that C++20 is available.

Also, adopt `.contains()` for std::map, std::set, and their unordered
counterparts to replace verbose find/end and count checks.
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@sbc100 @tlively @kripken @dschuff