[binutils-gdb] Define BFD_ASAN to detect asan

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f1a664fa55a9ec301b5139788ee033005dd31db6

commit f1a664fa55a9ec301b5139788ee033005dd31db6
Author: Alan Modra <amodra@gmail.com>
Date:   Tue Mar 3 10:20:54 2026 +1030

    Define BFD_ASAN to detect asan

Diff:
---
 bfd/bfd-in.h  | 10 ++++++++++
 bfd/bfd-in2.h | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/bfd/bfd-in.h b/bfd/bfd-in.h
index 751f0ad3cbb..8650fa12d82 100644
--- a/bfd/bfd-in.h
+++ b/bfd/bfd-in.h
@@ -151,6 +151,16 @@ struct orl;
    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
    : ~ (bfd_vma) 0)
 
+/* Detect whether we are compiling with -fsanitize=address.  */
+#ifndef BFD_ASAN
+# if ((defined (__SANITIZE_ADDRESS__) && __SANITIZE_ADDRESS__)		\
+      || (defined __has_feature && __has_feature (address_sanitizer)))
+#  define BFD_ASAN 1
+# else
+#  define BFD_ASAN 0
+# endif
+#endif
+
 /* Return TRUE if the start of STR matches PREFIX, FALSE otherwise.  */
 
 static inline bool
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 2b6811c72b2..cd5307beef4 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -158,6 +158,16 @@ struct orl;
    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
    : ~ (bfd_vma) 0)
 
+/* Detect whether we are compiling with -fsanitize=address.  */
+#ifndef BFD_ASAN
+# if ((defined (__SANITIZE_ADDRESS__) && __SANITIZE_ADDRESS__)		\
+      || (defined __has_feature && __has_feature (address_sanitizer)))
+#  define BFD_ASAN 1
+# else
+#  define BFD_ASAN 0
+# endif
+#endif
+
 /* Return TRUE if the start of STR matches PREFIX, FALSE otherwise.  */
 
 static inline bool