diff mbox series

gawk: improve randtest stability

Message ID 20260605061030.1182-1-adityags2004@gmail.com
State Rejected
Headers show
Series gawk: improve randtest stability | expand

Commit Message

Aditya G.S June 5, 2026, 6:10 a.m. UTC 
Backport upstream fix to improve stability of randtest.sh by
retrying when sigma is too small, avoiding intermittent failures.

[YOCTO #16254]

Signed-off-by: Aditya GS <adityags2004@gmail.com>
---
 .../gawk/files/randtest-fix.patch             | 136 ++++++++++++++++++
 meta/recipes-extended/gawk/gawk_5.4.0.bb      |   1 +
 2 files changed, 137 insertions(+)
 create mode 100644 meta/recipes-extended/gawk/files/randtest-fix.patch

Comments

patchtest@automation.yoctoproject.org June 5, 2026, 7:15 a.m. UTC | #1 
Thank you for your submission. Patchtest identified one
or more issues with the patch. Please see the log below for
more information:

---
Testing patch /home/patchtest/share/mboxes/gawk-improve-randtest-stability.patch

FAIL: test Signed-off-by presence: A patch file has been added without a Signed-off-by tag: 'randtest-fix.patch' (test_patch.TestPatch.test_signed_off_by_presence)

PASS: test CVE tag format (test_patch.TestPatch.test_cve_tag_format)
PASS: test Signed-off-by presence (test_mbox.TestMbox.test_signed_off_by_presence)
PASS: test Upstream-Status presence (test_patch.TestPatch.test_upstream_status_presence_format)
PASS: test author valid (test_mbox.TestMbox.test_author_valid)
PASS: test bugzilla entry format (test_mbox.TestMbox.test_bugzilla_entry_format)
PASS: test commit message presence (test_mbox.TestMbox.test_commit_message_presence)
PASS: test commit message user tags (test_mbox.TestMbox.test_commit_message_user_tags)
PASS: test mbox format (test_mbox.TestMbox.test_mbox_format)
PASS: test non-AUH upgrade (test_mbox.TestMbox.test_non_auh_upgrade)
PASS: test shortlog format (test_mbox.TestMbox.test_shortlog_format)
PASS: test shortlog length (test_mbox.TestMbox.test_shortlog_length)
PASS: test target mailing list (test_mbox.TestMbox.test_target_mailing_list)

SKIP: pretest pylint: No python related patches, skipping test (test_python_pylint.PyLint.pretest_pylint)
SKIP: test pylint: No python related patches, skipping test (test_python_pylint.PyLint.test_pylint)
SKIP: test series merge on head: Merge test is disabled for now (test_mbox.TestMbox.test_series_merge_on_head)

---

Please address the issues identified and
submit a new revision of the patch, or alternatively, reply to this
email with an explanation of why the patch should be accepted. If you
believe these results are due to an error in patchtest, please submit a
bug at https://bugzilla.yoctoproject.org/ (use the 'Patchtest' category
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failures, see: https://wiki.yoctoproject.org/wiki/Patchtest. Thank
you!
diff mbox series

Patch

diff --git a/meta/recipes-extended/gawk/files/randtest-fix.patch b/meta/recipes-extended/gawk/files/randtest-fix.patch
new file mode 100644
index 0000000000..ee1950e8bc
--- /dev/null
+++ b/meta/recipes-extended/gawk/files/randtest-fix.patch
@@ -0,0 +1,136 @@ 
+From f2250f4bc864913437619af7a9834a1c24915acd Mon Sep 17 00:00:00 2001
+From: "Arnold D. Robbins" <arnold@skeeve.com>
+Date: Thu, 28 May 2026 09:52:41 -0400
+Subject: Improve test/randtest.sh.
+
+Upstream-Status: Backport
+https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=f2250f4bc864913437619af7a9834a1c24915acd
+
+---
+
+diff --git a/test/randtest.sh b/test/randtest.sh
+index 597376a8..6ae6f830 100755
+--- a/test/randtest.sh
++++ b/test/randtest.sh
+@@ -45,68 +45,77 @@ $AWK 'BEGIN{
+     nsamples=('$NSAMPLES');
+     max_allowed_sigma=('$MAX_ALLOWED_SIGMA');
+     nruns=('$NRUNS');
+-    for(tau=0;tau<nsamples/2;tau++) corr[tau]=0;
++    max_retries=5
+ 
+-    for(run=0;run<nruns;run++) {
+-	sum=0;
++    for (retry=0; retry<max_retries; retry++) {
++        for(tau=0; tau<nsamples/2; tau++) corr[tau]=0;
+ 
+-	# Fill an array with a sequence of samples that are a
+-	# function of pairs of rand() values.
++        for(run=0; run<nruns; run++) {
++            sum=0;
+ 
+-	for(i=0;i<nsamples;i++) {
+-	   samp[i]=((rand()-0.5)*(rand()-0.5))^2;
+-	   sum=sum+samp[i];
+-	   }
++	    # Fill an array with a sequence of samples that are a
++	    # function of pairs of rand() values.
+ 
+-	# Subtract off the mean of the sequence:
++            for(i=0; i<nsamples; i++) {
++                samp[i]=((rand()-0.5)*(rand()-0.5))^2;
++	        sum=sum+samp[i];
++            }
+ 
+-	mean=sum/nsamples;
+-	for(i=0;i<nsamples;i++) samp[i]=samp[i]-mean;
++	    # Subtract off the mean of the sequence:
+ 
+-	# Calculate an autocorrelation function on the sequence.
+-	# Because the values of rand() should be independent, there
+-	# should be no peaks in the autocorrelation.
++	    mean=sum/nsamples;
++	    for(i=0;i<nsamples;i++) samp[i]=samp[i]-mean;
+ 
+-	for(tau=0;tau<nsamples/2;tau++) {
+-	    sum=0;
+-	    for(i=0;i<nsamples/2;i++) sum=sum+samp[i]*samp[i+tau];
+-	    corr[tau]=corr[tau]+sum;
+-	    }
++	    # Calculate an autocorrelation function on the sequence.
++	    # Because the values of rand() should be independent, there
++	    # should be no peaks in the autocorrelation.
+ 
+-	}
+-    # Normalize the autocorrelation to the tau=0 value.
++            for(tau=0; tau<nsamples/2; tau++) {
++	        sum=0;
++	        for(i=0;i<nsamples/2;i++) sum=sum+samp[i]*samp[i+tau];
++	        corr[tau]=corr[tau]+sum;
++            }
+ 
+-    max_corr=corr[0];
+-    for(tau=0;tau<nsamples/2;tau++) corr[tau]=corr[tau]/max_corr;
++        }
++        # Normalize the autocorrelation to the tau=0 value.
+ 
+-    # OPTIONALLY Print out the autocorrelation values:
++        max_corr=corr[0];
++        for(tau=0;tau<nsamples/2;tau++) corr[tau]=corr[tau]/max_corr;
+ 
+-    # for(tau=0;tau<nsamples/2;tau++) print tau, corr[tau] > "pairpower_corr.data";
++        # OPTIONALLY Print out the autocorrelation values:
+ 
+-    # Calculate the sigma for the non-zero tau values: 
++        # for(tau=0;tau<nsamples/2;tau++) print tau, corr[tau] > "pairpower_corr.data";
+ 
+-    power_sum=0;
++        # Calculate the sigma for the non-zero tau values: 
+ 
+-    for(tau=1;tau<nsamples/2;tau++) power_sum=power_sum+(corr[tau])^2;
++        power_sum=0;
+ 
+-    sigma=sqrt(power_sum/(nsamples/2-1));
++        for(tau=1;tau<nsamples/2;tau++) power_sum=power_sum+(corr[tau])^2;
+ 
+-    # See if any of the correlations exceed a reasonable number of sigma:
++        sigma=sqrt(power_sum/(nsamples/2-1));
+ 
+-    passed=1;
+-    for(tau=1;tau<nsamples/2;tau++) {
+-	if ( abs(corr[tau])/sigma > max_allowed_sigma ) {
+-	    print "Tau=", tau ", Autocorr=", corr[tau]/sigma, "sigma";
+-	    passed=0;
+-	    }
++        if (sigma < 1e-6) {
++            print "Sigma too small, retrying run", retry
++            continue
+         }
+-    if(!passed) {
+-	print "Test failed."
+-	exit(1);
++
++        # See if any of the correlations exceed a reasonable number of sigma:
++
++        for(tau=1;tau<nsamples/2;tau++) {
++            if (abs(corr[tau])/sigma > max_allowed_sigma) {
++                print "Tau=", tau ", Autocorr=", corr[tau]/sigma, "sigma";
++                print "Test failed."
++                exit 1
++            }
+         }
+-    else exit (0);
++
++        exit 0
+     }
+ 
++    print "Test failed after retries due to unstable sigma"
++    exit 1
++}
++
+ function abs(abs_input) { return(sqrt(abs_input^2)) ; }
+ '
+ 
+-- 
+2.34.1
+
diff --git a/meta/recipes-extended/gawk/gawk_5.4.0.bb b/meta/recipes-extended/gawk/gawk_5.4.0.bb
index d7211f28f3..71e7ddb31f 100644
--- a/meta/recipes-extended/gawk/gawk_5.4.0.bb
+++ b/meta/recipes-extended/gawk/gawk_5.4.0.bb
@@ -28,6 +28,7 @@  PACKAGECONFIG[pma-if-64bit] = "--enable-pma,--disable-pma, "
 SRC_URI = "${GNU_MIRROR}/gawk/gawk-${PV}.tar.xz \
            file://run-ptest \
            file://0001-configure.ac-re-enable-disabled-printf-features.patch \
+	   file://randtest-fix.patch \
            "
 
 SRC_URI[sha256sum] = "3dd430f0cd3b4428c6c3f6afc021b9cd3c1f8c93f7a688dc268ca428a90b4ac1"