Follow-up Comment #3, bug #57962 (project make): This is a test which reproduces the bug. The bug only manifests when USE_POSIX_SPAWN is defined.
regards, Dmitry
diff --git a/tests/scripts/features/exec b/tests/scripts/features/exec
index 91181f4..3e6c3fa 100644
--- a/tests/scripts/features/exec
+++ b/tests/scripts/features/exec
@@ -60,4 +60,20 @@ SHELL = #PERL#
all:; @printf "$(ANSWER)\n";
!, "ANSWER='$answer'", "$answer\n");
+
+# test 16
+# Use sh as a shell, but create a directory called 'sh' in PATH.
+# https://savannah.gnu.org/bugs/?57962.
+mkdir("mybin", 0700);
+mkdir("mybin/sh", 0700);
+run_make_test(q!
+SHELL:=sh
+PATH:=mybin:$(PATH)
+all:; @printf "$(ANSWER)\n"
+!, "ANSWER='$answer'", "$answer\n");
+
+rmdir("mybin/sh");
+rmdir("mybin");
+
+
1;
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