cmd/compile: remove encoding of safemode bit from export data

Removes the encoding of this bit which was ignored but left behind
for 1.7 to minimize pre-1.7 export format changes. See the issue
for more details.

Fixes #15772.

Change-Id: I46cd7a66ad4c6003b78c64295cf3bda503ebf2dd
Reviewed-on: https://go-review.googlesource.com/27201
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>

diff --git a/src/cmd/compile/internal/gc/bexport.go b/src/cmd/compile/internal/gc/bexport.go
index 4d46921374cf6364ce907e000c642efc5219414a..8dafd51eb378dd51faef837c1cd4f472b8955ebf 100644 (file)
--- a/src/cmd/compile/internal/gc/bexport.go
+++ b/src/cmd/compile/internal/gc/bexport.go
@@ -346,7 +346,6 @@ func export(out *bufio.Writer, trace bool) int {
        }
 
        // write compiler-specific flags
-       p.bool(safemode)
        if p.trace {
                p.tracef("\n")
        }

diff --git a/src/cmd/compile/internal/gc/bimport.go b/src/cmd/compile/internal/gc/bimport.go
index dcc4e163cd74a58d79ac197b8b1d846b1d46ade1..463178eafbb969d07679299678ce8e56adc8a1a7 100644 (file)
--- a/src/cmd/compile/internal/gc/bimport.go
+++ b/src/cmd/compile/internal/gc/bimport.go
@@ -106,9 +106,6 @@ func Import(in *bufio.Reader) {
 
        // read compiler-specific flags
 
-       // read but ignore safemode bit (see issue #15772)
-       p.bool() // formerly: importpkg.Safe = p.bool()
-
        // phase 2
        objcount = 0
        for {

diff --git a/src/cmd/compile/internal/gc/builtin.go b/src/cmd/compile/internal/gc/builtin.go
index 95208705143431e7750b458d56d11275739f7136..28fbf1719e73e06523d1bedcef4750662ec6cd43 100644 (file)
--- a/src/cmd/compile/internal/gc/builtin.go
+++ b/src/cmd/compile/internal/gc/builtin.go
@@ -103,9 +103,9 @@ const runtimeimport = "" +
        "write\x00\x01\x16d\x00\t\x19racereadrange\x00\x04\x16\raddr·1\x00d\x16\r" +
        "size·2\x00d\x00\t\x1bracewriterange\x00\x04\x16\x98\x03\x00d\x16\x9a\x03\x00d\x00\t" +
        "\x0fmsanread\x00\x04\x16\x98\x03\x00d\x16\x9a\x03\x00d\x00\t\x11msanwrite\x00\x04\x16\x98\x03\x00d" +
-       "\x16\x9a\x03\x00d\x00\v\xf8\x01\x02\v\x00\x01\x00\n$$\n"
+       "\x16\x9a\x03\x00d\x00\v\xf8\x01\v\x00\x01\x00\n$$\n"
 
 const unsafeimport = "" +
        "cn\x00\x03v1\x01\vunsafe\x00\x05\r\rPointer\x00\x16\x00\t\x0fOffsetof\x00\x01" +
-       ":\x00\x01\x16\x00\t\vSizeof\x00\x01:\x00\x01\x16\x00\t\rAlignof\x00\x01:\x00\x01\x16\x00\v\b\x00\v" +
-       "\x00\x01\x00\n$$\n"
+       ":\x00\x01\x16\x00\t\vSizeof\x00\x01:\x00\x01\x16\x00\t\rAlignof\x00\x01:\x00\x01\x16\x00\v\b\v\x00" +
+       "\x01\x00\n$$\n"