diff options
Diffstat (limited to 'compiler/rustc_session/src')
| -rw-r--r-- | compiler/rustc_session/src/session.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs index 25b46241c52..172672a80fb 100644 --- a/compiler/rustc_session/src/session.rs +++ b/compiler/rustc_session/src/session.rs @@ -758,7 +758,8 @@ impl Session { // ELF x86-64 abi, but it can be disabled for some compilation units. // // Typically when we're compiling with `-C panic=abort` we don't need - // `uwtable` because we can't generate any exceptions! + // `uwtable` because we can't generate any exceptions! But note that + // some targets require unwind tables to generate backtraces. // Unwind tables are needed when compiling with `-C panic=unwind`, but // LLVM won't omit unwind tables unless the function is also marked as // `nounwind`, so users are allowed to disable `uwtable` emission. |