Ok then you need to place all of this and the bug link into the commit
message, and then you can run the reproducibility test locally, no?
Alex
On Mon, 28 Nov 2022 at 22:22, Denys Dmytriyenko <denis@...> wrote:

On Mon, Nov 28, 2022 at 09:58:43PM +0100, Alexander Kanavin wrote:

What build errors is this addressing and how can they be observed?

https://bugzilla.yoctoproject.org/show_bug.cgi?id=14976

On Mon, 28 Nov 2022 at 21:46, Ryan Eatmon via lists.openembedded.org
<reatmon=ti.com@...> wrote:

The previous version of this patch was a little too zealous in
cleaning up the envvironment. Some of the variable impacted
by the filerCompilerFlags() function require at least one
value to remain in the array. In this case, the values for
ccExe, cxxExe, and fcExe require a value or it results in
a panic related to accessing a value out of range.

The updated patch adds a flag that requires keeping the first
value so that at least one thing remains and the assignments
for the Exes set that flag to true. The first item in the
array should be the compiler name anyway so it should remain.

Signed-off-by: Ryan Eatmon <reatmon@...>
---
...ent-based-hash-generation-less-pedan.patch | 30 ++++++++++---------
1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
index 17fa9d9831..43be5cd2e8 100644
--- a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
+++ b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
@@ -74,7 +74,7 @@ index c88b315..a06455c 100644
+ cppflags, cflags, cxxflags, fflags, ldflags, _ := b.CFlags(p, true)

- ccExe := b.ccExe()
-+ ccExe := filterCompilerFlags(b.ccExe())
++ ccExe := filterCompilerFlags(b.ccExe(), true)
fmt.Fprintf(h, "CC=%q %q %q %q\n", ccExe, cppflags, cflags, ldflags)
// Include the C compiler tool ID so that if the C
// compiler changes we rebuild the package.
@@ -83,7 +83,7 @@ index c88b315..a06455c 100644
}
if len(p.CXXFiles)+len(p.SwigCXXFiles) > 0 {
- cxxExe := b.cxxExe()
-+ cxxExe := filterCompilerFlags(b.cxxExe())
++ cxxExe := filterCompilerFlags(b.cxxExe(), true)
fmt.Fprintf(h, "CXX=%q %q\n", cxxExe, cxxflags)
if cxxID, err := b.gccToolID(cxxExe[0], "c++"); err == nil {
fmt.Fprintf(h, "CXX ID=%q\n", cxxID)
@@ -91,7 +91,7 @@ index c88b315..a06455c 100644
}
if len(p.FFiles) > 0 {
- fcExe := b.fcExe()
-+ fcExe := filterCompilerFlags(b.fcExe())
++ fcExe := filterCompilerFlags(b.fcExe(), true)
fmt.Fprintf(h, "FC=%q %q\n", fcExe, fflags)
if fcID, err := b.gccToolID(fcExe[0], "f95"); err == nil {
fmt.Fprintf(h, "FC ID=%q\n", fcID)
@@ -104,20 +104,22 @@ index c88b315..a06455c 100644
}

// Configuration specific to compiler toolchain.
-@@ -2705,8 +2707,23 @@ func envList(key, def string) []string {
+@@ -2705,8 +2707,25 @@ func envList(key, def string) []string {
return args
}

+var filterFlags = os.Getenv("CGO_PEDANTIC") == ""
+
-+func filterCompilerFlags(flags []string) []string {
++func filterCompilerFlags(flags []string, keepfirst bool) []string {
+ var newflags []string
++ var realkeepfirst bool = keepfirst
+ if !filterFlags {
+ return flags
+ }
+ for _, flag := range flags {
-+ if strings.HasPrefix(flag, "-m") {
++ if strings.HasPrefix(flag, "-m") || realkeepfirst {
+ newflags = append(newflags, flag)
++ realkeepfirst = false
+ }
+ }
+ return newflags
@@ -129,21 +131,21 @@ index c88b315..a06455c 100644
defaults := "-g -O2"

if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
-@@ -2724,6 +2741,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
+@@ -2724,6 +2743,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
if ldflags, err = buildFlags("LDFLAGS", defaults, p.CgoLDFLAGS, checkLinkerFlags); err != nil {
return
}
+ if filtered {
-+ cppflags = filterCompilerFlags(cppflags)
-+ cflags = filterCompilerFlags(cflags)
-+ cxxflags = filterCompilerFlags(cxxflags)
-+ fflags = filterCompilerFlags(fflags)
-+ ldflags = filterCompilerFlags(ldflags)
++ cppflags = filterCompilerFlags(cppflags, false)
++ cflags = filterCompilerFlags(cflags, false)
++ cxxflags = filterCompilerFlags(cxxflags, false)
++ fflags = filterCompilerFlags(fflags, false)
++ ldflags = filterCompilerFlags(ldflags, false)
+ }

return
}
-@@ -2739,7 +2763,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)
+@@ -2739,7 +2765,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)

func (b *Builder) cgo(a *Action, cgoExe, objdir string, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
p := a.Package
@@ -152,7 +154,7 @@ index c88b315..a06455c 100644
if err != nil {
return nil, nil, err
}
-@@ -3246,7 +3270,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {
+@@ -3246,7 +3272,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {

// Run SWIG on one SWIG input file.
func (b *Builder) swigOne(a *Action, p *load.Package, file, objdir string, pcCFLAGS []string, cxx bool, intgosize string) (outGo, outC string, err error) {
--
2.17.1

On Mon, Nov 28, 2022 at 09:58:43PM +0100, Alexander Kanavin wrote:

What build errors is this addressing and how can they be observed?

https://bugzilla.yoctoproject.org/show_bug.cgi?id=14976

On Mon, 28 Nov 2022 at 21:46, Ryan Eatmon via lists.openembedded.org
<reatmon=ti.com@...> wrote:

The previous version of this patch was a little too zealous in
cleaning up the envvironment. Some of the variable impacted
by the filerCompilerFlags() function require at least one
value to remain in the array. In this case, the values for
ccExe, cxxExe, and fcExe require a value or it results in
a panic related to accessing a value out of range.

The updated patch adds a flag that requires keeping the first
value so that at least one thing remains and the assignments
for the Exes set that flag to true. The first item in the
array should be the compiler name anyway so it should remain.

Signed-off-by: Ryan Eatmon <reatmon@...>
---
...ent-based-hash-generation-less-pedan.patch | 30 ++++++++++---------
1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
index 17fa9d9831..43be5cd2e8 100644
--- a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
+++ b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
@@ -74,7 +74,7 @@ index c88b315..a06455c 100644
+ cppflags, cflags, cxxflags, fflags, ldflags, _ := b.CFlags(p, true)

- ccExe := b.ccExe()
-+ ccExe := filterCompilerFlags(b.ccExe())
++ ccExe := filterCompilerFlags(b.ccExe(), true)
fmt.Fprintf(h, "CC=%q %q %q %q\n", ccExe, cppflags, cflags, ldflags)
// Include the C compiler tool ID so that if the C
// compiler changes we rebuild the package.
@@ -83,7 +83,7 @@ index c88b315..a06455c 100644
}
if len(p.CXXFiles)+len(p.SwigCXXFiles) > 0 {
- cxxExe := b.cxxExe()
-+ cxxExe := filterCompilerFlags(b.cxxExe())
++ cxxExe := filterCompilerFlags(b.cxxExe(), true)
fmt.Fprintf(h, "CXX=%q %q\n", cxxExe, cxxflags)
if cxxID, err := b.gccToolID(cxxExe[0], "c++"); err == nil {
fmt.Fprintf(h, "CXX ID=%q\n", cxxID)
@@ -91,7 +91,7 @@ index c88b315..a06455c 100644
}
if len(p.FFiles) > 0 {
- fcExe := b.fcExe()
-+ fcExe := filterCompilerFlags(b.fcExe())
++ fcExe := filterCompilerFlags(b.fcExe(), true)
fmt.Fprintf(h, "FC=%q %q\n", fcExe, fflags)
if fcID, err := b.gccToolID(fcExe[0], "f95"); err == nil {
fmt.Fprintf(h, "FC ID=%q\n", fcID)
@@ -104,20 +104,22 @@ index c88b315..a06455c 100644
}

// Configuration specific to compiler toolchain.
-@@ -2705,8 +2707,23 @@ func envList(key, def string) []string {
+@@ -2705,8 +2707,25 @@ func envList(key, def string) []string {
return args
}

+var filterFlags = os.Getenv("CGO_PEDANTIC") == ""
+
-+func filterCompilerFlags(flags []string) []string {
++func filterCompilerFlags(flags []string, keepfirst bool) []string {
+ var newflags []string
++ var realkeepfirst bool = keepfirst
+ if !filterFlags {
+ return flags
+ }
+ for _, flag := range flags {
-+ if strings.HasPrefix(flag, "-m") {
++ if strings.HasPrefix(flag, "-m") || realkeepfirst {
+ newflags = append(newflags, flag)
++ realkeepfirst = false
+ }
+ }
+ return newflags
@@ -129,21 +131,21 @@ index c88b315..a06455c 100644
defaults := "-g -O2"

if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
-@@ -2724,6 +2741,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
+@@ -2724,6 +2743,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
if ldflags, err = buildFlags("LDFLAGS", defaults, p.CgoLDFLAGS, checkLinkerFlags); err != nil {
return
}
+ if filtered {
-+ cppflags = filterCompilerFlags(cppflags)
-+ cflags = filterCompilerFlags(cflags)
-+ cxxflags = filterCompilerFlags(cxxflags)
-+ fflags = filterCompilerFlags(fflags)
-+ ldflags = filterCompilerFlags(ldflags)
++ cppflags = filterCompilerFlags(cppflags, false)
++ cflags = filterCompilerFlags(cflags, false)
++ cxxflags = filterCompilerFlags(cxxflags, false)
++ fflags = filterCompilerFlags(fflags, false)
++ ldflags = filterCompilerFlags(ldflags, false)
+ }

return
}
-@@ -2739,7 +2763,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)
+@@ -2739,7 +2765,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)

func (b *Builder) cgo(a *Action, cgoExe, objdir string, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
p := a.Package
@@ -152,7 +154,7 @@ index c88b315..a06455c 100644
if err != nil {
return nil, nil, err
}
-@@ -3246,7 +3270,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {
+@@ -3246,7 +3272,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {

// Run SWIG on one SWIG input file.
func (b *Builder) swigOne(a *Action, p *load.Package, file, objdir string, pcCFLAGS []string, cxx bool, intgosize string) (outGo, outC string, err error) {
--
2.17.1

What build errors is this addressing and how can they be observed?
Alex
On Mon, 28 Nov 2022 at 21:46, Ryan Eatmon via lists.openembedded.org
<reatmon=ti.com@...> wrote:

The previous version of this patch was a little too zealous in
cleaning up the envvironment. Some of the variable impacted
by the filerCompilerFlags() function require at least one
value to remain in the array. In this case, the values for
ccExe, cxxExe, and fcExe require a value or it results in
a panic related to accessing a value out of range.

The updated patch adds a flag that requires keeping the first
value so that at least one thing remains and the assignments
for the Exes set that flag to true. The first item in the
array should be the compiler name anyway so it should remain.

Signed-off-by: Ryan Eatmon <reatmon@...>
---
...ent-based-hash-generation-less-pedan.patch | 30 ++++++++++---------
1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
index 17fa9d9831..43be5cd2e8 100644
--- a/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
+++ b/meta/recipes-devtools/go/go/0001-cmd-go-make-content-based-hash-generation-less-pedan.patch
@@ -74,7 +74,7 @@ index c88b315..a06455c 100644
+ cppflags, cflags, cxxflags, fflags, ldflags, _ := b.CFlags(p, true)

- ccExe := b.ccExe()
-+ ccExe := filterCompilerFlags(b.ccExe())
++ ccExe := filterCompilerFlags(b.ccExe(), true)
fmt.Fprintf(h, "CC=%q %q %q %q\n", ccExe, cppflags, cflags, ldflags)
// Include the C compiler tool ID so that if the C
// compiler changes we rebuild the package.
@@ -83,7 +83,7 @@ index c88b315..a06455c 100644
}
if len(p.CXXFiles)+len(p.SwigCXXFiles) > 0 {
- cxxExe := b.cxxExe()
-+ cxxExe := filterCompilerFlags(b.cxxExe())
++ cxxExe := filterCompilerFlags(b.cxxExe(), true)
fmt.Fprintf(h, "CXX=%q %q\n", cxxExe, cxxflags)
if cxxID, err := b.gccToolID(cxxExe[0], "c++"); err == nil {
fmt.Fprintf(h, "CXX ID=%q\n", cxxID)
@@ -91,7 +91,7 @@ index c88b315..a06455c 100644
}
if len(p.FFiles) > 0 {
- fcExe := b.fcExe()
-+ fcExe := filterCompilerFlags(b.fcExe())
++ fcExe := filterCompilerFlags(b.fcExe(), true)
fmt.Fprintf(h, "FC=%q %q\n", fcExe, fflags)
if fcID, err := b.gccToolID(fcExe[0], "f95"); err == nil {
fmt.Fprintf(h, "FC ID=%q\n", fcID)
@@ -104,20 +104,22 @@ index c88b315..a06455c 100644
}

// Configuration specific to compiler toolchain.
-@@ -2705,8 +2707,23 @@ func envList(key, def string) []string {
+@@ -2705,8 +2707,25 @@ func envList(key, def string) []string {
return args
}

+var filterFlags = os.Getenv("CGO_PEDANTIC") == ""
+
-+func filterCompilerFlags(flags []string) []string {
++func filterCompilerFlags(flags []string, keepfirst bool) []string {
+ var newflags []string
++ var realkeepfirst bool = keepfirst
+ if !filterFlags {
+ return flags
+ }
+ for _, flag := range flags {
-+ if strings.HasPrefix(flag, "-m") {
++ if strings.HasPrefix(flag, "-m") || realkeepfirst {
+ newflags = append(newflags, flag)
++ realkeepfirst = false
+ }
+ }
+ return newflags
@@ -129,21 +131,21 @@ index c88b315..a06455c 100644
defaults := "-g -O2"

if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
-@@ -2724,6 +2741,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
+@@ -2724,6 +2743,13 @@ func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, l
if ldflags, err = buildFlags("LDFLAGS", defaults, p.CgoLDFLAGS, checkLinkerFlags); err != nil {
return
}
+ if filtered {
-+ cppflags = filterCompilerFlags(cppflags)
-+ cflags = filterCompilerFlags(cflags)
-+ cxxflags = filterCompilerFlags(cxxflags)
-+ fflags = filterCompilerFlags(fflags)
-+ ldflags = filterCompilerFlags(ldflags)
++ cppflags = filterCompilerFlags(cppflags, false)
++ cflags = filterCompilerFlags(cflags, false)
++ cxxflags = filterCompilerFlags(cxxflags, false)
++ fflags = filterCompilerFlags(fflags, false)
++ ldflags = filterCompilerFlags(ldflags, false)
+ }

return
}
-@@ -2739,7 +2763,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)
+@@ -2739,7 +2765,7 @@ var cgoRe = lazyregexp.New(`[/\\:]`)

func (b *Builder) cgo(a *Action, cgoExe, objdir string, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, gxxfiles, mfiles, ffiles []string) (outGo, outObj []string, err error) {
p := a.Package
@@ -152,7 +154,7 @@ index c88b315..a06455c 100644
if err != nil {
return nil, nil, err
}
-@@ -3246,7 +3270,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {
+@@ -3246,7 +3272,7 @@ func (b *Builder) swigIntSize(objdir string) (intsize string, err error) {

// Run SWIG on one SWIG input file.
func (b *Builder) swigOne(a *Action, p *load.Package, file, objdir string, pcCFLAGS []string, cxx bool, intgosize string) (outGo, outC string, err error) {
--
2.17.1