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Message-ID: <1360588791.9132.95.camel@eris.loria.fr>
Date: Mon, 11 Feb 2013 14:20:36 +0100
From: Jens Gustedt <Jens.Gustedt@...ia.fr>
To: musl@...ts.openwall.com
Subject: [PATCH v2 3/3] When switching optimization to higher levels (-O3)
and enable link time optimization (-flto) my linker explodes because
"__environ" is accessed through an alias named "environ", and that text
segment has already been removed:
`environ' referenced in section `.text.execvp' of /tmp/cckGfCaK.ltrans1.ltrans.o: defined in discarded section `.text' of src/env/__environ.lo (symbol from plugin)
/usr/bin/ld: BFD (GNU Binutils for Ubuntu) 2.22 assertion fail ../../bfd/elf64-x86-64.c:4365
Use the "real" name of __environ directly and make this code consistent
with other functions (such as execv) that already use __environ,
too.
Some places where "environ" is used may already have been silently
renamed through a macro in internal/libc.h, but it is probably better to
have that in the open.
2 2 src/process/execvp.c
2 2 src/process/system.c
diff --git a/src/process/execvp.c b/src/process/execvp.c
index 682680d..0a33e42 100644
--- a/src/process/execvp.c
+++ b/src/process/execvp.c
@@ -4,7 +4,7 @@
#include <errno.h>
#include <limits.h>
-extern char **environ;
+extern char **__environ;
int __execvpe(const char *file, char *const argv[], char *const envp[])
{
@@ -45,5 +45,5 @@ int __execvpe(const char *file, char *const argv[], char *const envp[])
int execvp(const char *file, char *const argv[])
{
- return __execvpe(file, argv, environ);
+ return __execvpe(file, argv, __environ);
}
diff --git a/src/process/system.c b/src/process/system.c
index 0aa34cd..4232bef 100644
--- a/src/process/system.c
+++ b/src/process/system.c
@@ -13,7 +13,7 @@ static void dummy_0()
weak_alias(dummy_0, __acquire_ptc);
weak_alias(dummy_0, __release_ptc);
-extern char **environ;
+extern char **__environ;
int system(const char *cmd)
{
@@ -40,7 +40,7 @@ int system(const char *cmd)
posix_spawnattr_setsigdefault(&attr, &reset);
posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETSIGDEF|POSIX_SPAWN_SETSIGMASK);
ret = posix_spawn(&pid, "/bin/sh", 0, &attr,
- (char *[]){"sh", "-c", (char *)cmd, 0}, environ);
+ (char *[]){"sh", "-c", (char *)cmd, 0}, __environ);
posix_spawnattr_destroy(&attr);
if (!ret) while (waitpid(pid, &status, 0)<0 && errno == EINTR);
--
1.7.9.5
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