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* [PATCH] jit: avoid calloc() poisoning on musl [PR106102]
@ 2022-06-27 22:58 Sergei Trofimovich
  2022-06-28  7:02 ` Richard Biener
  0 siblings, 1 reply; 4+ messages in thread
From: Sergei Trofimovich @ 2022-06-27 22:58 UTC (permalink / raw)
  To: gcc-patches; +Cc: rguenth, dmalcolm, Sergei Trofimovich

From: Sergei Trofimovich <siarheit@google.com>

On musl <pthread.h> uses calloc() (via <sched.h>). jit/ includes
it directly and exposes use of poisoned calloc():

    /build/build/./prev-gcc/xg++ ... ../../gcc-13-20220626/gcc/jit/jit-playback.cc
    make[3]: *** [Makefile:1143: jit/libgccjit.o] Error 1
    make[3]: *** Waiting for unfinished jobs....
    In file included from /<<NIX>>/musl-1.2.3-dev/include/pthread.h:30,
                     from ../../gcc-13-20220626/gcc/jit/jit-playback.cc:44:
    /<<NIX>>/musl-1.2.3-dev/include/sched.h:84:7: error: attempt to use poisoned "calloc"
       84 | void *calloc(size_t, size_t);
          |       ^
    /<<NIX>>/musl-1.2.3-dev/include/sched.h:124:36: error: attempt to use poisoned "calloc"
      124 | #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
          |                                    ^

The change moves sys-specific header before "system.h" inclusion
to evade poisoning.

gcc/jit/

	PR c++/106102
	* jit-playback.cc: Include <pthread.h> before "system.h" to avoid calloc()
	poisoning.
	* jit-recording.cc: Ditto.
	* libgccjit.cc: Ditto.
---
 gcc/jit/jit-playback.cc  | 5 +++--
 gcc/jit/jit-recording.cc | 4 +++-
 gcc/jit/libgccjit.cc     | 4 +++-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/gcc/jit/jit-playback.cc b/gcc/jit/jit-playback.cc
index 6be6bdf8dea..4ab7b59cab9 100644
--- a/gcc/jit/jit-playback.cc
+++ b/gcc/jit/jit-playback.cc
@@ -19,6 +19,9 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
+/* <pthread.h> has to go before "system.h" as it pull in to-be-poisoned
+   symbols on musl like calloc().  */
+#include <pthread.h>
 #include "system.h"
 #include "coretypes.h"
 #include "target.h"
@@ -41,8 +44,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "diagnostic.h"
 #include "stmt.h"
 
-#include <pthread.h>
-
 #include "jit-playback.h"
 #include "jit-result.h"
 #include "jit-builtins.h"
diff --git a/gcc/jit/jit-recording.cc b/gcc/jit/jit-recording.cc
index 697dee66e73..9505ed3b279 100644
--- a/gcc/jit/jit-recording.cc
+++ b/gcc/jit/jit-recording.cc
@@ -19,13 +19,15 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
+/* <pthread.h> has to go before "system.h" as it pull in to-be-poisoned
+   symbols on musl like calloc().  */
+#include <pthread.h>
 #include "system.h"
 #include "coretypes.h"
 #include "tm.h"
 #include "pretty-print.h"
 #include "toplev.h"
 
-#include <pthread.h>
 
 #include "jit-builtins.h"
 #include "jit-recording.h"
diff --git a/gcc/jit/libgccjit.cc b/gcc/jit/libgccjit.cc
index 0e76097b4ba..6a0ac8aaba2 100644
--- a/gcc/jit/libgccjit.cc
+++ b/gcc/jit/libgccjit.cc
@@ -19,12 +19,14 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
+/* <pthread.h> has to go before "system.h" as it pull in to-be-poisoned
+   symbols on musl like calloc().  */
+#include <pthread.h>
 #include "system.h"
 #include "coretypes.h"
 #include "timevar.h"
 #include "typed-splay-tree.h"
 #include "cppbuiltin.h"
-#include <pthread.h>
 
 #include "libgccjit.h"
 #include "jit-recording.h"
-- 
2.36.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2022-06-29  6:54 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-27 22:58 [PATCH] jit: avoid calloc() poisoning on musl [PR106102] Sergei Trofimovich
2022-06-28  7:02 ` Richard Biener
2022-06-28 21:05   ` [PATCH v2] " Sergei Trofimovich
2022-06-29  6:54     ` Richard Biener

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