Dmitriy Vyukov ca4b868e9a cmd/gc: racewalk: fix compiler crash ... The code: func main() { v := make([]int64, 10) i := 1 _ = v[(i*4)/3] } crashes compiler with: Program received signal SIGSEGV, Segmentation fault. 0x000000000043c274 in walkexpr (np=0x7fffffffc9b8, init=0x0) at src/cmd/gc/walk.c:587 587 *init = concat(*init, n->ninit); (gdb) bt #0 0x000000000043c274 in walkexpr (np=0x7fffffffc9b8, init=0x0) at src/cmd/gc/walk.c:587 #1 0x0000000000432d15 in copyexpr (n=0x7ffff7f69a48, t=<optimized out>, init=0x0) at src/cmd/gc/subr.c:2020 #2 0x000000000043f281 in walkdiv (init=0x0, np=0x7fffffffca70) at src/cmd/gc/walk.c:2901 #3 walkexpr (np=0x7ffff7f69760, init=0x0) at src/cmd/gc/walk.c:956 #4 0x000000000043d801 in walkexpr (np=0x7ffff7f69bc0, init=0x0) at src/cmd/gc/walk.c:988 #5 0x000000000043cc9b in walkexpr (np=0x7ffff7f69d38, init=0x0) at src/cmd/gc/walk.c:1068 #6 0x000000000043c50b in walkexpr (np=0x7ffff7f69f50, init=0x0) at src/cmd/gc/walk.c:879 #7 0x000000000043c50b in walkexpr (np=0x7ffff7f6a0c8, init=0x0) at src/cmd/gc/walk.c:879 #8 0x0000000000440a53 in walkexprlist (l=0x7ffff7f6a0c8, init=0x0) at src/cmd/gc/walk.c:357 #9 0x000000000043d0bf in walkexpr (np=0x7fffffffd318, init=0x0) at src/cmd/gc/walk.c:566 #10 0x00000000004402bf in vmkcall (fn=<optimized out>, t=0x0, init=0x0, va=0x7fffffffd368) at src/cmd/gc/walk.c:2275 #11 0x000000000044059a in mkcall (name=<optimized out>, t=0x0, init=0x0) at src/cmd/gc/walk.c:2287 #12 0x000000000042862b in callinstr (np=0x7fffffffd4c8, init=0x7fffffffd568, wr=0, skip=<optimized out>) at src/cmd/gc/racewalk.c:478 #13 0x00000000004288b7 in racewalknode (np=0x7ffff7f68108, init=0x7fffffffd568, wr=0, skip=0) at src/cmd/gc/racewalk.c:287 #14 0x0000000000428781 in racewalknode (np=0x7ffff7f65840, init=0x7fffffffd568, wr=0, skip=0) at src/cmd/gc/racewalk.c:302 #15 0x0000000000428abd in racewalklist (l=0x7ffff7f65840, init=0x0) at src/cmd/gc/racewalk.c:97 #16 0x0000000000428d0b in racewalk (fn=0x7ffff7f5f010) at src/cmd/gc/racewalk.c:63 #17 0x0000000000402b9c in compile (fn=0x7ffff7f5f010) at src/cmd/6g/../gc/pgen.c:67 #18 0x0000000000419f86 in funccompile (n=0x7ffff7f5f010, isclosure=0) at src/cmd/gc/dcl.c:1414 #19 0x0000000000424161 in p9main (argc=<optimized out>, argv=<optimized out>) at src/cmd/gc/lex.c:431 #20 0x0000000000401739 in main (argc=<optimized out>, argv=<optimized out>) at src/lib9/main.c:35 The problem is nil init passed to mkcall(). R=golang-dev, rsc CC=golang-dev https://golang.org/cl/6940045		2012-12-17 12:55:41 +04:00
..
5a	cmd/gc, cmd/ld: struct field tracking	2012-11-02 00:17:21 -04:00
5c	cmd/5c: fix dataflag annotation	2012-09-25 14:42:44 +08:00
5g	cmd/{5,6,8}g: reduce size of Prog and Addr	2012-12-14 06:20:24 +11:00
5l	cmd/ld: fix build on elf systems	2012-11-13 13:12:11 -05:00
6a	cmd/gc, cmd/ld: struct field tracking	2012-11-02 00:17:21 -04:00
6c	cmd/6c, cmd/8c: add fixjmp step to regopt.	2012-12-06 07:20:03 +01:00
6g	cmd/{5,6,8}g: reduce size of Prog and Addr	2012-12-14 06:20:24 +11:00
6l	cmd/6l, cmd/8l: emit no-ops to separate zero-stack funcs from nosplits.	2012-11-26 21:51:48 +01:00
8a	cmd/8a: support XMM registers.	2012-12-06 07:27:38 +01:00
8c	cmd/6c, cmd/8c: add fixjmp step to regopt.	2012-12-06 07:20:03 +01:00
8g	cmd/{5,6,8}g: reduce size of Prog and Addr	2012-12-14 06:20:24 +11:00
8l	cmd/6l, cmd/8l: emit no-ops to separate zero-stack funcs from nosplits.	2012-11-26 21:51:48 +01:00
addr2line	runtime/pprof: support OS X CPU profiling	2012-02-28 16:18:24 -05:00
api	cmd/api: speed up API check by 2x, caching parser.ParseFile calls	2012-11-19 13:50:20 -08:00
cc	libmach, cmd/cc, cmd/cov, cmd/ld, cmd/prof: check malloc return value	2012-11-27 03:05:46 +08:00
cgo	cmd/cgo: fix alignment of bool.	2012-11-21 13:04:38 -08:00
cov	libmach, cmd/cc, cmd/cov, cmd/ld, cmd/prof: check malloc return value	2012-11-27 03:05:46 +08:00
dist	cmd/go: handle os signals	2012-12-14 17:33:59 +11:00
fix	cmd/fix: Add keys to printer.Config composite literals.	2012-12-16 19:31:59 -05:00
gc	cmd/gc: racewalk: fix compiler crash	2012-12-17 12:55:41 +04:00
go	cmd/go: handle os signals	2012-12-14 17:33:59 +11:00
godoc	cmd/godoc: fix godoc net/http on windows	2012-12-01 00:42:50 +08:00
gofmt	gofmt: test rewrite of (x.(type)) -> x.(type)	2012-12-06 09:20:03 -08:00
ld	cmd/ld: skip 0-length write in cwrite	2012-12-06 00:00:20 -05:00
nm	gofmt: apply gofmt -w src misc	2012-10-30 13:38:01 -07:00
objdump	runtime/pprof: support OS X CPU profiling	2012-02-28 16:18:24 -05:00
pack	cmd/pack: rename __.SYMDEF to __.GOSYMDEF	2012-09-13 10:26:21 -04:00
prof	libmach, cmd/cc, cmd/cov, cmd/ld, cmd/prof: check malloc return value	2012-11-27 03:05:46 +08:00
vet	vet: be less strict about number of arguments when a ... is present.	2012-12-06 15:17:31 +11:00
yacc	cmd/yacc: allow utf-8 token values	2012-09-13 13:59:00 -07:00