Add -fno-exceptions to clang flags when building coverage.cc

OSS-Fuzz Team · copybara-github · commit 4ef102a52ee2 · 2025-10-07T05:24:12.000-07:00
Also add -fno-rtti just in case, even though it's not strictly necessary.

Without this, attempting to link the compiled object file with `clang` will
result in an `undefined reference to `__gxx_personality_v0'` error.

PiperOrigin-RevId: 816122422
diff --git a/infra/base-images/base-builder/indexer/index_build.py b/infra/base-images/base-builder/indexer/index_build.py
@@ -440,6 +440,8 @@ def build_project(
 
   build_cov_instrumentation_command = [
       f'{_CLANG_TOOLCHAIN}/bin/clang++',
+      '-fno-rtti',
+      '-fno-exceptions',
       '-c',
       '/opt/indexer/coverage.cc',
   ]

Original file line number	Diff line number	Diff line change
`@@ -440,6 +440,8 @@ def build_project(`
`440`	`440`
`441`	`441`	`build_cov_instrumentation_command = [`
`442`	`442`	`f'{_CLANG_TOOLCHAIN}/bin/clang++',`
	`443`	`+ '-fno-rtti',`
	`444`	`+ '-fno-exceptions',`
`443`	`445`	`'-c',`
`444`	`446`	`'/opt/indexer/coverage.cc',`
`445`	`447`	`]`