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Switch to clang-r346389.

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* Add -fno-sanitize=implicit-integer-sign-change when
  there is any integer related sanitizer, and this check
  is not explicitly specified.
  Android core does not boot with this new sanitizer yet.
* Filter out -fno-sanitize=implicit-integer-sign-change
  from tooling flags.

Bug: 119329758
Bug: 119557795
Test: make checkbuild, boot, go/clang-r346389-testing
Change-Id: I709de569cb73d070fc4958e2b4387f4041bc5438
This commit is contained in:
Chih-Hung Hsieh
2018-11-15 14:01:36 -08:00
committed by Chih-hung Hsieh
parent ce16f3bac8
commit 3567e62f97
3 changed files with 25 additions and 3 deletions
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20
cc/sanitize.go
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@@ -376,6 +376,22 @@ func (sanitize *sanitize) deps(ctx BaseModuleContext, deps Deps) Deps {
return deps
}
func toDisableImplicitIntegerChange(flags []string) bool {
// Returns true if any flag is fsanitize*integer, and there is
// no explicit flag about sanitize=implicit-integer-sign-change.
for _, f := range flags {
if strings.Contains(f, "sanitize=implicit-integer-sign-change") {
return false
}
}
for _, f := range flags {
if strings.HasPrefix(f, "-fsanitize") && strings.Contains(f, "integer") {
return true
}
}
return false
}
func (sanitize *sanitize) flags(ctx ModuleContext, flags Flags) Flags {
minimalRuntimeLib := config.UndefinedBehaviorSanitizerMinimalRuntimeLibrary(ctx.toolchain()) + ".a"
minimalRuntimePath := "${config.ClangAsanLibDir}/" + minimalRuntimeLib
@@ -533,6 +549,10 @@ func (sanitize *sanitize) flags(ctx ModuleContext, flags Flags) Flags {
flags.LdFlags = append(flags.LdFlags, "-Wl,--exclude-libs,"+minimalRuntimeLib)
}
}
// http://b/119329758, Android core does not boot up with this sanitizer yet.
if toDisableImplicitIntegerChange(flags.CFlags) {
flags.CFlags = append(flags.CFlags, "-fno-sanitize=implicit-integer-sign-change")
}
}
if len(diagSanitizers) > 0 {