Enable asynchronous unwind tables with both ASAN and TSAN for correct
back-trace.
LLVM currently enables asynchronous unwind tables for: ASAN, HWSAN, TSAN, MSAN,
and DFSAN.
HWSAN is currently available only on AArch64, while MSAN and DFSAN are not
available at all.
Also, LLVM checks is '-ffreestanding' is not passed in. '-ffreestanding' is
only available in C-family frontends, hence why no such check is included.
TODO: Not sure if any tests should be added.
gcc/ChangeLog:
* config/mips/mips.cc (mips_option_override): Enable
asyncronous unwind tables with both ASAN and TSAN.
---
gcc/config/mips/mips.cc | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/gcc/config/mips/mips.cc b/gcc/config/mips/mips.cc
index e64928f4113..ea2a038216c 100644
--- a/gcc/config/mips/mips.cc
+++ b/gcc/config/mips/mips.cc
@@ -20115,10 +20115,15 @@ mips_option_override (void)
target_flags |= MASK_64BIT;
}
- /* -fsanitize=address needs to turn on -fasynchronous-unwind-tables in
- order for tracebacks to be complete but not if any
- -fasynchronous-unwind-table were already specified. */
- if (flag_sanitize & SANITIZE_USER_ADDRESS
+ /* -fsanitize=address, and -fsanitize=thread need to turn
+ on -fasynchronous-unwind-tables in order for tracebacks
+ to be complete but not if any -fasynchronous-unwind-table
+ were already specified. */
+ /* FIXME: HWSAN is currently only available on AArch64,
+ but could also utilize -fasynchronous-unwind-tables.
+ FIXME: We would also like to check if -ffreestanding is passed in.
+ However, it is only available in C-ish frontends. */
+ if (flag_sanitize & (SANITIZE_USER_ADDRESS | SANITIZE_THREAD)
&& !global_options_set.x_flag_asynchronous_unwind_tables)
flag_asynchronous_unwind_tables = 1;
---
