From b583b3ed8ffa9406dba7c0cecb75f6c2d62912f3 Mon Sep 17 00:00:00 2001
From: Tomas Grosup <tomasgrosup@microsoft.com>
Date: Fri, 17 Apr 2026 14:02:08 +0200
Subject: [PATCH] Use heap dumps (type 2) instead of triage dumps for crash
 diagnostics
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Triage dumps (type 3) don't include the managed heap, making it
impossible to inspect exception messages and object state. Heap dumps
(type 2) include this data while still being much smaller than full
dumps (type 4).

Only produced on crash — no impact on passing builds.

Related: https://github.com/dotnet/sdk/issues/53958

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 azure-pipelines-PR.yml | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/azure-pipelines-PR.yml b/azure-pipelines-PR.yml
index c3213f150a3..28a68f915c3 100644
--- a/azure-pipelines-PR.yml
+++ b/azure-pipelines-PR.yml
@@ -230,7 +230,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:FSharpLangVersion=preview
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -266,7 +266,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -buildnorealsig -testCoreclr -configuration Release
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -313,7 +313,7 @@ stages:
             env:
               FSharp_CacheEvictionImmediate: true
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -358,7 +358,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:AdditionalFscCmdFlags=--strict-indentation+
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -394,7 +394,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:AdditionalFscCmdFlags=--strict-indentation-
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -461,7 +461,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration $(_configuration) -$(_testKind)
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\$(_configuration)\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build and Test $(_testKind) $(transparentCompiler)
@@ -541,7 +541,7 @@ stages:
               buildEnv:
                 FSharp_CacheEvictionImmediate: true
                 DOTNET_DbgEnableMiniDump: 1
-                DOTNET_DbgMiniDumpType: 3
+                DOTNET_DbgMiniDumpType: 2
                 DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
                 NativeToolsOnMachine: true
               testRunTitlePrefix: 'WindowsCompressedMetadata testDesktop'