Bug #10941: [MSVC] Wt failed to build with error C2026 on MSVC - Wt - Redmine

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Bug #10941

closed

[MSVC] Wt failed to build with error C2026 on MSVC

Added by mi niMo over 2 years ago. Updated about 2 years ago.

Status:

Closed

Priority:

High

Assignee:

Roel Standaert

Target version:

4.9.0

Start date:

09/14/2022

Due date:

% Done:

100%

Estimated time:

Description

Hi all,
Wt fails to build on MSVC due to error C2026. Could you help look?
Error message
F:\gitP\emweb\wt\build_amd64\src\Wt_js.C(34,3): error C2026: string too big, trailing characters truncated [F:\gitP\emweb\wt\build_amd64\src\wt.vcxproj]
Expected Behaviour
build successfully.
version info
OS Version: windows server 2019
VS version: VS2019 (16.11.18)
the commit of Wt we use is 0a2ea66
Repro steps

git clone https://github.com/emweb/wt F:\gitP\emweb\wt
set VSCMD_SKIP_SENDTELEMETRY=1 & "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\Tools\VsDevCmd.bat" -host_arch=amd64 -arch=amd64
xcopy F:\tools\Boost\Patch\boost_1_67_0\x64\boost\iostream\Changed\fpos.hpp F:\gitP\emweb\wt..\boost_1_67_0\x64\boost\iostreams\detail\config /k/r/i/c/f/y
mkdir F:\gitP\emweb\wt\build_amd64 and cd F:\gitP\emweb\wt\build_amd64
cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_SYSTEM_VERSION=10.0.18362.0 -DBOOST_PREFIX=F:\gitP\emweb\wt..\boost_1_67_0\x64 -DBOOST_LIBRARYDIR=F:\gitP\emweb\wt..\boost_1_67_0\x64\lib64-msvc-14.1 .. 2>&1
msbuild /m /p:Platform=x64 /p:Configuration=Release ALL_BUILD.vcxproj /t:Rebuild 2>&1

Files

build (7).log (282 KB) build (7).log

Detail log

mi niMo, 09/14/2022 10:24 AM

Related issues 1 (0 open — 1 closed)

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Updated by Roel Standaert over 2 years ago

Status changed from New to InProgress
Assignee set to Roel Standaert
Target version set to 4.9.0

It appears that our new minifier (terser) doesn't insert quite as many newlines as our old one (an old Google closure compiler version), and our filetostring CMake script starts a new string literal at every newline. This means that we're running into MSVC's maximum for string literal sizes: https://docs.microsoft.com/en-us/cpp/error-messages/compiler-errors-1/compiler-error-c2026.

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