RepoMirrors/musl
1
0
Fork 0
mirror of git://git.musl-libc.org/musl synced 2025-03-05 19:27:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix riscv64 syscall asm constraint

Browse Source 
having "+r"(a0) is redundant with "0"(a0) in syscalls with at least 1
arg, which is arguably a constraint violation (clang treats it as
such), and an invalid input with indeterminate value in the 0-arg
case. use the "=r"(a0) form instead.
This commit is contained in:
Rich Felker 2019-07-17 18:50:15 -04:00
parent 1a28c6eade
commit 8eb49e0485
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/riscv64/syscall_arch.h
View File

@ -3,7 +3,7 @@
#define __asm_syscall(...) \
__asm__ __volatile__ ("ecall\n\t" \
: "+r"(a0) : __VA_ARGS__ : "memory"); \
: "=r"(a0) : __VA_ARGS__ : "memory"); \
return a0; \
static inline long __syscall0(long n)