Messages in this thread | | | Date | Tue, 22 Mar 2022 20:56:44 +0700 | Subject | Re: [RFC PATCH v2 3/8] tools/nolibc: i386: Implement syscall with 6 arguments | From | Ammar Faizi <> |
| |
On 3/22/22 8:54 PM, Ammar Faizi wrote: > > Willy, something goes wrong here... > > ammarfaizi2@integral2:~/work/linux.work/tools/include/nolibc$ taskset -c 0 gcc -ffreestanding -nostdlib -nostartfiles test.c -o test -lgcc > /usr/bin/ld: /tmp/ccHiYiks.o: warning: relocation against `environ' in read-only section `.text' > /usr/bin/ld: /tmp/ccHiYiks.o: in function `getenv': > test.c:(.text+0x1f76): undefined reference to `environ' > /usr/bin/ld: test.c:(.text+0x1fc3): undefined reference to `environ' > /usr/bin/ld: test.c:(.text+0x1ffc): undefined reference to `environ' > /usr/bin/ld: test.c:(.text+0x2021): undefined reference to `environ' > /usr/bin/ld: test.c:(.text+0x2049): undefined reference to `environ' > /usr/bin/ld: warning: creating DT_TEXTREL in a PIE > collect2: error: ld returned 1 exit status > ammarfaizi2@integral2:~/work/linux.work/tools/include/nolibc$ > > > I suspect it's caused by commit: > > commit c970abe796019b3d576fd154a54b94efb35c02b1 > Author: Willy Tarreau <w@1wt.eu> > Date: Mon Mar 21 18:33:08 2022 +0100 > > tools/nolibc/stdlib: add a simple getenv() implementation > This implementation relies on an extern definition of the environ > variable, that the caller must declare and initialize from envp. > Signed-off-by: Willy Tarreau <w@1wt.eu> > Signed-off-by: Paul E. McKenney <paulmck@kernel.org> > > I will take a look deeper on this...
This bug only exists when compiling without optimization.
-- Ammar Faizi
| |