* [PATCH] foreign-library: fix RTLD_LAZY | RTLD_LOCAL crash on macOS
@ 2021-09-12 5:10 Aleix Conchillo Flaqué
2021-09-27 4:45 ` Aleix Conchillo Flaqué
0 siblings, 1 reply; 2+ messages in thread
From: Aleix Conchillo Flaqué @ 2021-09-12 5:10 UTC (permalink / raw)
To: guile-devel; +Cc: Aleix Conchillo Flaqué
* module/system/foreign-library.scm (load-foreign-library): On macOS
calling `dlopen` with RTLD_LAZY | RTLD_LOCAL causes a crash when calling
`dlsym`. There are a three working combinations:
- Using RTLD_NOW | RTLD_LOCAL
- Using RTLD_NOW | RTLD_GLOBAL
- Using RTLD_LAZY | RTLD_GLOBAL
For efficiency purposes we choose RTLD_LAZY | RTLD_GLOBAL.
See https://lists.gnu.org/archive/html/guile-devel/2021-09/msg00008.html
---
module/system/foreign-library.scm | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/module/system/foreign-library.scm b/module/system/foreign-library.scm
index dc426385f..63889277c 100644
--- a/module/system/foreign-library.scm
+++ b/module/system/foreign-library.scm
@@ -172,6 +172,11 @@ name."
(else
name)))))
+;; In macOS using dlopen with RTLD_LAZY | RTLD_LOCAL produces a crash.
+;; https://lists.gnu.org/archive/html/guile-devel/2021-09/msg00008.html
+(define system-needs-global?
+ (string-contains %host-type "-darwin"))
+
(define* (load-foreign-library #:optional filename #:key
(extensions system-library-extensions)
(search-ltdl-library-path? #t)
@@ -186,7 +191,7 @@ name."
#f))
(define flags
(logior (if lazy? RTLD_LAZY RTLD_NOW)
- (if global? RTLD_GLOBAL RTLD_LOCAL)))
+ (if (or global? system-needs-global?) RTLD_GLOBAL RTLD_LOCAL)))
(define (dlopen* name) (dlopen name flags))
(if (and rename-on-cygwin? (string-contains %host-type "cygwin"))
(set! filename (lib->cyg filename)))
--
2.33.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] foreign-library: fix RTLD_LAZY | RTLD_LOCAL crash on macOS
2021-09-12 5:10 [PATCH] foreign-library: fix RTLD_LAZY | RTLD_LOCAL crash on macOS Aleix Conchillo Flaqué
@ 2021-09-27 4:45 ` Aleix Conchillo Flaqué
0 siblings, 0 replies; 2+ messages in thread
From: Aleix Conchillo Flaqué @ 2021-09-27 4:45 UTC (permalink / raw)
To: guile-devel
Ignore. The issue was the way libgcrypt was linked in macOS.
See: https://dev.gnupg.org/T5610
A libgcrypt's libtool.m4 patch has been applied upstream.
On Sat, Sep 11, 2021 at 10:10 PM Aleix Conchillo Flaqué
<aconchillo@gmail.com> wrote:
>
> * module/system/foreign-library.scm (load-foreign-library): On macOS
> calling `dlopen` with RTLD_LAZY | RTLD_LOCAL causes a crash when calling
> `dlsym`. There are a three working combinations:
>
> - Using RTLD_NOW | RTLD_LOCAL
> - Using RTLD_NOW | RTLD_GLOBAL
> - Using RTLD_LAZY | RTLD_GLOBAL
>
> For efficiency purposes we choose RTLD_LAZY | RTLD_GLOBAL.
>
> See https://lists.gnu.org/archive/html/guile-devel/2021-09/msg00008.html
> ---
> module/system/foreign-library.scm | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/module/system/foreign-library.scm b/module/system/foreign-library.scm
> index dc426385f..63889277c 100644
> --- a/module/system/foreign-library.scm
> +++ b/module/system/foreign-library.scm
> @@ -172,6 +172,11 @@ name."
> (else
> name)))))
>
> +;; In macOS using dlopen with RTLD_LAZY | RTLD_LOCAL produces a crash.
> +;; https://lists.gnu.org/archive/html/guile-devel/2021-09/msg00008.html
> +(define system-needs-global?
> + (string-contains %host-type "-darwin"))
> +
> (define* (load-foreign-library #:optional filename #:key
> (extensions system-library-extensions)
> (search-ltdl-library-path? #t)
> @@ -186,7 +191,7 @@ name."
> #f))
> (define flags
> (logior (if lazy? RTLD_LAZY RTLD_NOW)
> - (if global? RTLD_GLOBAL RTLD_LOCAL)))
> + (if (or global? system-needs-global?) RTLD_GLOBAL RTLD_LOCAL)))
> (define (dlopen* name) (dlopen name flags))
> (if (and rename-on-cygwin? (string-contains %host-type "cygwin"))
> (set! filename (lib->cyg filename)))
> --
> 2.33.0
>
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