[Meson] ASan: Fix compilation under LLVM 13

LLVM 13 changes the format of the `-asan-use-after-return` option (from `0|1` to `never|runtime|always`). Unfortunately, the change is not backward compatible. Signed-off-by: Paweł Marczewski <[email protected]>
AcamTech · Dec 17, 2021 · de967a9 · de967a9
1 parent 624b18c
commit de967a9
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diff --git a/common/include/asan.h b/common/include/asan.h
@@ -58,7 +58,7 @@
  *       -fsanitize=address
  *       -fno-sanitize-link-runtime
  *       -mllvm -asan-mapping-offset=0x18000000000
- *       -mllvm -asan-use-after-return=0
+ *       -mllvm -asan-use-after-return=0  (`never` in LLVM 13 or higher)
  *       -mllvm -asan-stack=0
  *       -DASAN
  *

diff --git a/meson.build b/meson.build
@@ -211,9 +211,14 @@ if asan
         '-fsanitize=address',
         '-fno-sanitize-link-runtime',
         '-mllvm', '-asan-mapping-offset=' + asan_shadow_start,
-        '-mllvm', '-asan-use-after-return=0',
         '-DASAN',
     ]
+
+    if meson.get_compiler('c').version().version_compare('>=13')
+        cflags_sanitizers += ['-mllvm', '-asan-use-after-return=never']
+    else
+        cflags_sanitizers += ['-mllvm', '-asan-use-after-return=0']
+    endif
 endif
 
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