Mercurial > vim
annotate src/msvc-latest.bat @ 34309:d7cfd8fb1d75 v9.1.0089
patch 9.1.0089: qsort() comparison functions should be transitive
Commit: https://github.com/vim/vim/commit/e06e43766500ecb4cd1031fa16cf9cbebdb222c1
Author: Christian Brabandt <cb@256bit.org>
Date: Fri Feb 9 19:39:14 2024 +0100
patch 9.1.0089: qsort() comparison functions should be transitive
Problem: qsort() comparison functions should be transitive
Solution: Do not subtract values, but rather use explicit comparisons
Improve qsort() comparison functions
There has been a recent report on qsort() causing out-of-bounds read &
write in glibc for non transitive comparison functions
https://www.qualys.com/2024/01/30/qsort.txt
Even so the bug is in glibc's implementation of the qsort() algorithm,
it's bad style to just use substraction for the comparison functions,
which may cause overflow issues and as hinted at in OpenBSD's manual
page for qsort(): "It is almost always an error to use subtraction to
compute the return value of the comparison function."
So check the qsort() comparison functions and change them to be safe.
closes: #13980
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
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date | Fri, 09 Feb 2024 19:45:06 +0100 |
parents | 54dda39c5bb3 |
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rev | line source |
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1 @echo off |
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2 rem To be used on MS-Windows for Visual C++ 2017 or later. |
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3 rem See INSTALLpc.txt for information. |
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4 rem |
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5 rem Usage: |
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6 rem For x86 builds run this with "x86" option: |
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7 rem msvc-latest x86 |
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8 rem For x64 builds run this with "x86_amd64" option or "x64" option: |
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9 rem msvc-latest x86_amd64 |
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10 rem msvc-latest x64 |
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11 rem |
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12 rem Optional environment variables: |
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13 rem VSWHERE: |
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14 rem Full path to vswhere.exe. |
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15 rem VSVEROPT: |
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16 rem Option to search specific version of Visual Studio. |
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17 rem Default: -latest |
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18 rem To search VS2017: |
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19 rem set "VSVEROPT=-version [15.0^,16.0^)" |
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20 rem To search VS2019: |
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21 rem set "VSVEROPT=-version [16.0^,17.0^)" |
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22 rem To search VS2022: |
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23 rem set "VSVEROPT=-version [17.0^,18.0^)" |
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24 |
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25 if "%VSWHERE%"=="" ( |
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26 set "VSWHERE=%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" |
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27 set VSWHERE_SET=yes |
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28 ) |
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29 if not exist "%VSWHERE%" ( |
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30 echo Error: vswhere not found. |
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31 set VSWHERE= |
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32 set VSWHERE_SET= |
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33 exit /b 1 |
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34 ) |
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35 |
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36 if "%VSVEROPT%"=="" ( |
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37 set VSVEROPT=-latest |
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38 set VSVEROPT_SET=yes |
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39 ) |
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40 |
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41 rem Search Visual Studio Community, Professional or above. |
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42 for /f "usebackq tokens=*" %%i in (`"%VSWHERE%" %VSVEROPT% -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath`) do ( |
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43 set InstallDir=%%i |
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44 ) |
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45 if exist "%InstallDir%\VC\Auxiliary\Build\vcvarsall.bat" ( |
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46 call "%InstallDir%\VC\Auxiliary\Build\vcvarsall.bat" %* |
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47 goto done |
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48 ) |
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49 |
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50 rem Search Visual Studio 2017 Express. |
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51 rem (Visual Studio 2017 Express uses different component IDs.) |
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52 for /f "usebackq tokens=*" %%i in (`"%VSWHERE%" %VSVEROPT% -products Microsoft.VisualStudio.Product.WDExpress -property installationPath`) do ( |
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53 set InstallDir=%%i |
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54 ) |
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55 if exist "%InstallDir%\VC\Auxiliary\Build\vcvarsall.bat" ( |
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56 call "%InstallDir%\VC\Auxiliary\Build\vcvarsall.bat" %* |
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57 ) else ( |
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58 echo Error: vcvarsall.bat not found. |
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59 rem Set ERRORLEVEL to 1. |
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60 call |
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61 ) |
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62 |
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63 :done |
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64 if "%VSWHERE_SET%"=="yes" ( |
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65 set VSWHERE= |
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66 set VSWHERE_SET= |
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67 ) |
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68 if "%VSVEROPT_SET%"=="yes" ( |
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69 set VSVEROPT= |
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70 set VSVEROPT_SET= |
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71 ) |
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72 set InstallDir= |