diff --git a/.github/workflows/build-daily-gcc_p0917.yml b/.github/workflows/build-daily-gcc_p0917.yml
new file mode 100644
index 0000000..fd2c0e6
--- /dev/null
+++ b/.github/workflows/build-daily-gcc_p0917.yml
@@ -0,0 +1,80 @@
+### DO NOT EDIT - created by a script ###
+name: gcc_p0917 via gcc p0917-trunk
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+jobs:
+  check-activity:
+    runs-on: ubuntu-latest
+    outputs:
+      should_build: ${{ steps.check.outputs.should_build }}
+    steps:
+      - name: Check for recent commits
+        id: check
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          REPOS='["https://github.com/mattkretz/gcc/tree/P0917_overloadable_conditional_operator"]'
+          STALE_DAYS=7
+
+          SINCE_DATE=$(date -d "${STALE_DAYS} days ago" --iso-8601=seconds)
+          echo "Checking for commits since ${SINCE_DATE} (${STALE_DAYS} days ago)"
+          HAS_RECENT=false
+
+          for repo in $(echo "$REPOS" | jq -r '.[]'); do
+            REPO_PATH=$(echo "$repo" | sed -E 's|https://github.com/([^/]+/[^/]+).*|\1|')
+            BRANCH=$(echo "$repo" | sed -n -E 's|https://github.com/[^/]+/[^/]+/tree/(.+)|\1|p')
+
+            if [ -n "$BRANCH" ]; then
+              echo "Checking $REPO_PATH (branch: $BRANCH) for recent commits..."
+              URL="https://api.github.com/repos/${REPO_PATH}/commits?sha=${BRANCH}&since=${SINCE_DATE}&per_page=1"
+            else
+              echo "Checking $REPO_PATH (default branch) for recent commits..."
+              URL="https://api.github.com/repos/${REPO_PATH}/commits?since=${SINCE_DATE}&per_page=1"
+            fi
+
+            # Authenticate to avoid the 60 req/hour anonymous limit (shared across runner IPs).
+            # On any API failure, build anyway rather than silently treating it as "no activity".
+            if ! COMMITS=$(curl -sf \
+                -H "Authorization: Bearer ${GH_TOKEN}" \
+                -H "X-GitHub-Api-Version: 2022-11-28" \
+                "$URL"); then
+              echo "::warning::GitHub API request failed for $REPO_PATH; building to be safe"
+              HAS_RECENT=true
+              break
+            fi
+
+            if [ "$(echo "$COMMITS" | jq 'length')" -gt 0 ]; then
+              echo "Found recent commits in $repo"
+              HAS_RECENT=true
+              break
+            fi
+          done
+
+          if [ "$HAS_RECENT" = "true" ]; then
+            echo "should_build=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "No recent commits in any repo (within ${STALE_DAYS} days), skipping build"
+            echo "should_build=false" >> "$GITHUB_OUTPUT"
+          fi
+
+  daily-build:
+    needs: check-activity
+    if: ${{ needs.check-activity.outputs.should_build == 'true' }}
+    runs-on: [ 'self-hosted', 'ce', 'linux', 'x64', 'large' ]
+    steps:
+      - name: Start from a clean directory
+        run: sudo find "$GITHUB_WORKSPACE" -mindepth 1 -delete
+      - uses: actions/checkout@v7
+      - name: Run the build
+        uses: ./.github/actions/daily-build
+        with:
+          image: gcc
+          name: gcc_p0917
+          command: build.sh
+          args: p0917-trunk
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
diff --git a/build-status.md b/build-status.md
index 3378499..95b86b9 100644
--- a/build-status.md
+++ b/build-status.md
@@ -76,6 +76,7 @@
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_lambda_p2034.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_lambda_p2034.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_lambda_p2034)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_lambda_p2034)
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_modules.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_modules.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_modules)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_modules)
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_notadragon_contracts_p3850.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_notadragon_contracts_p3850.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_notadragon_contracts_p3850)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_notadragon_contracts_p3850)
+* [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_p0917.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_p0917.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_p0917)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_p0917)
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_p1144.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_p1144.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_p1144)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_p1144)
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_thomas_healy.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_thomas_healy.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_thomas_healy)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_thomas_healy)
 * [![Status](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_trivial_relocation.yml/badge.svg)](https://github.com/compiler-explorer/compiler-workflows/actions/workflows//build-daily-gcc_trivial_relocation.yml)![Last success](https://img.shields.io/badge/dynamic/json?color=success&label=Last+OK&query=%24.last_success.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_trivial_relocation)![Last build](https://img.shields.io/badge/dynamic/json?color=yellow&label=Last+build&query=%24.last_build.timestamp&url=https%3A%2F%2Flambda.compiler-explorer.com%2Fcompiler-build%2Fgcc_trivial_relocation)
diff --git a/compilers.yaml b/compilers.yaml
index 3851a25..a4d2ffd 100644
--- a/compilers.yaml
+++ b/compilers.yaml
@@ -22,6 +22,7 @@ compilers:
     - { image: gcc, name: gcc_thomas_healy, args: thomas-healy-trunk, repos: ["https://github.com/healytpk/gcc-thomas-healy/tree/trunk"] }
     - { image: gcc, name: gcc_ilazaric_enclosing_cast, args: ilazaric-enclosing_cast, repos: ["https://github.com/ilazaric/gcc/tree/enclosing_cast"] }
     - { image: gcc, name: gcc_expr_reflect, args: expr-reflect-trunk, repos: ["https://github.com/yesmanchyk/gcc-mirror/tree/autograd-capable"] }
+    - { image: gcc, name: gcc_p0917, args: p0917-trunk, repos: ["https://github.com/mattkretz/gcc/tree/P0917_overloadable_conditional_operator"] }
     - { image: clang, name: clang }
     - { image: clang, name: clang_amdgpu, args: rocm-trunk, repos: ["https://github.com/ROCm/llvm-project/tree/amd-staging"] }
     - { image: clang, name: clang_assertions, args: assertions-trunk }