aboutsummaryrefslogtreecommitdiff
path: root/include/stdlib.h
diff options
context:
space:
mode:
authorFlorian Weimer <fweimer@redhat.com>2020-02-08 19:58:43 +0100
committerFlorian Weimer <fweimer@redhat.com>2020-02-15 11:01:23 +0100
commit3a0ecccb599a6b1ad4b149dc569c0080e92d057b (patch)
treee1c4c0e5f2e80221054d6bb6260b4038e27567b4 /include/stdlib.h
parent2efa52c880d46ee89523c8ed8102ceeb02043926 (diff)
downloadglibc-3a0ecccb599a6b1ad4b149dc569c0080e92d057b.tar
glibc-3a0ecccb599a6b1ad4b149dc569c0080e92d057b.tar.gz
glibc-3a0ecccb599a6b1ad4b149dc569c0080e92d057b.tar.bz2
glibc-3a0ecccb599a6b1ad4b149dc569c0080e92d057b.zip
ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]
Exporting functions and relying on symbol interposition from libc.so makes the choice of implementation dependent on DT_NEEDED order, which is not what some compiler drivers expect. This commit replaces one magic mechanism (symbol interposition) with another one (preprocessor-/compiler-based redirection). This makes the hand-over from the minimal malloc to the full malloc more explicit. Removing the ABI symbols is backwards-compatible because libc.so is always in scope, and the dynamic loader will find the malloc-related symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c ("ld.so: Support moving versioned symbols between sonames [BZ #24741]"). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'include/stdlib.h')
-rw-r--r--include/stdlib.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/stdlib.h b/include/stdlib.h
index 1fab78aa16..926f965f69 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -9,6 +9,8 @@
#if !defined _ISOMAC
# include <sys/stat.h>
+# include <rtld-malloc.h>
+
extern __typeof (strtol_l) __strtol_l;
extern __typeof (strtoul_l) __strtoul_l;
extern __typeof (strtoll_l) __strtoll_l;