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-rw-r--r--.gitignore1
-rw-r--r--Makefile7
-rw-r--r--test-genrandom.c34
3 files changed, 40 insertions, 2 deletions
diff --git a/.gitignore b/.gitignore
index 9229e918cd..fa7ac93594 100644
--- a/.gitignore
+++ b/.gitignore
@@ -149,6 +149,7 @@ test-chmtime
test-date
test-delta
test-dump-cache-tree
+test-genrandom
test-match-trees
common-cmds.h
*.tar.gz
diff --git a/Makefile b/Makefile
index a77d31de98..bd0ba95b1a 100644
--- a/Makefile
+++ b/Makefile
@@ -932,7 +932,7 @@ endif
export NO_SVN_TESTS
-test: all test-chmtime$X
+test: all test-chmtime$X test-genrandom$X
$(MAKE) -C t/ all
test-date$X: test-date.c date.o ctype.o
@@ -953,6 +953,9 @@ test-match-trees$X: test-match-trees.o $(GITLIBS)
test-chmtime$X: test-chmtime.c
$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $<
+test-genrandom$X: test-genrandom.c
+ $(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $<
+
check-sha1:: test-sha1$X
./test-sha1.sh
@@ -1041,7 +1044,7 @@ dist-doc:
clean:
rm -f *.o mozilla-sha1/*.o arm/*.o ppc/*.o compat/*.o xdiff/*.o \
- test-chmtime$X $(LIB_FILE) $(XDIFF_LIB)
+ test-chmtime$X test-genrandom$X $(LIB_FILE) $(XDIFF_LIB)
rm -f $(ALL_PROGRAMS) $(BUILT_INS) git$X
rm -f *.spec *.pyc *.pyo */*.pyc */*.pyo common-cmds.h TAGS tags
rm -rf autom4te.cache
diff --git a/test-genrandom.c b/test-genrandom.c
new file mode 100644
index 0000000000..8cefe6cfed
--- /dev/null
+++ b/test-genrandom.c
@@ -0,0 +1,34 @@
+/*
+ * Simple random data generator used to create reproducible test files.
+ * This is inspired from POSIX.1-2001 implementation example for rand().
+ * Copyright (C) 2007 by Nicolas Pitre, licensed under the GPL version 2.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[])
+{
+ unsigned long count, next = 0;
+ unsigned char *c;
+
+ if (argc < 2 || argc > 3) {
+ fprintf( stderr, "Usage: %s <seed_string> [<size>]", argv[0]);
+ return 1;
+ }
+
+ c = (unsigned char *) argv[1];
+ do {
+ next = next * 11 + *c;
+ } while (*c++);
+
+ count = (argc == 3) ? strtoul(argv[2], NULL, 0) : -1L;
+
+ while (count--) {
+ next = next * 1103515245 + 12345;
+ if (putchar((next >> 16) & 0xff) == EOF)
+ return -1;
+ }
+
+ return 0;
+}