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18d472db6f
t4211 attempts to test multiple git-log -L ranges where one range is a
superset of the other, and falsely succeeds because its "expected"
output is incorrect.
Overlapping -L ranges handed to git-log are coalesced by
line-log.c:sort_and_merge_range_set() into a set of non-overlapping,
disjoint ranges. When one range is a subset of another,
sort_and_merge_range_set() should coalesce both ranges to the superset
range, but instead the coalesced range often is incorrectly truncated to
the end of the subset range. For example, ranges 2-8 and 3-4 are
coalesced incorrectly to 2-4.
One can observe this incorrect behavior with git-log -L using the test
repository created by t4211. The superset/subset ranges t4211 employs
are 4-$ and 8-12 (where $ represents end-of-file). The coalesced range
should be 4-$. Manually invoking git-log with the same ranges the test
employs, we see:
% git log -L 4:a.c simple |
awk '/^commit [0-9a-f]{40}/ { print substr($2,1,7) }'
4659538
100b61a
39b6eb2
a6eb826
f04fb20
de4c48a
% git log -L 8,12:a.c simple | awk ...
f04fb20
de4c48a
% git log -L 4:a.c -L 8,12:a.c simple | awk ...
a6eb826
f04fb20
de4c48a
This last output is incorrect. 8-12 is a subset of 4-$, hence the output
of the coalesced range should be the same as the 4-$ output shown first.
In fact, the above incorrect output is the truncated bogus range 4-12:
% git log -L 4,12:a.c simple | awk ...
a6eb826
f04fb20
de4c48a
Fix the test to correctly fail in the presence of the
sort_and_merge_range_set() coalescing bug. Do so by changing the
"expected" output to the commits mentioned in the 4-$ output above.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
187 lines
2.5 KiB
Text
187 lines
2.5 KiB
Text
commit 4659538844daa2849b1a9e7d6fadb96fcd26fc83
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:48:43 2013 +0100
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change back to complete line
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diff --git a/a.c b/a.c
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--- a/a.c
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+++ b/a.c
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@@ -4,19 +4,21 @@
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long f(long x)
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{
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int s = 0;
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while (x) {
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x >>= 1;
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s++;
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}
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return s;
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}
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/*
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* This is only an example!
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*/
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int main ()
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{
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printf("%ld\n", f(15));
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return 0;
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-}
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\ No newline at end of file
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+}
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+
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+/* incomplete lines are bad! */
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commit 100b61a6f2f720f812620a9d10afb3a960ccb73c
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:48:10 2013 +0100
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change to an incomplete line at end
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diff --git a/a.c b/a.c
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--- a/a.c
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+++ b/a.c
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@@ -4,19 +4,19 @@
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long f(long x)
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{
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int s = 0;
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while (x) {
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x >>= 1;
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s++;
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}
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return s;
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}
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/*
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* This is only an example!
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*/
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int main ()
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{
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printf("%ld\n", f(15));
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return 0;
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-}
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+}
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\ No newline at end of file
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commit 39b6eb2d5b706d3322184a169f666f25ed3fbd00
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:45:41 2013 +0100
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touch comment
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diff --git a/a.c b/a.c
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--- a/a.c
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+++ b/a.c
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@@ -3,19 +3,19 @@
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long f(long x)
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{
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int s = 0;
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while (x) {
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x >>= 1;
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s++;
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}
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return s;
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}
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/*
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- * A comment.
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+ * This is only an example!
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*/
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int main ()
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{
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printf("%ld\n", f(15));
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return 0;
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}
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commit a6eb82647d5d67f893da442f8f9375fd89a3b1e2
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:45:16 2013 +0100
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touch both functions
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diff --git a/a.c b/a.c
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--- a/a.c
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+++ b/a.c
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@@ -3,19 +3,19 @@
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-int f(int x)
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+long f(long x)
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{
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int s = 0;
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while (x) {
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x >>= 1;
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s++;
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}
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return s;
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}
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/*
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* A comment.
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*/
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int main ()
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{
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- printf("%d\n", f(15));
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+ printf("%ld\n", f(15));
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return 0;
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}
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commit f04fb20f2c77850996cba739709acc6faecc58f7
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:44:55 2013 +0100
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change f()
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diff --git a/a.c b/a.c
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--- a/a.c
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+++ b/a.c
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@@ -3,18 +3,19 @@
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int f(int x)
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{
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int s = 0;
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while (x) {
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x >>= 1;
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s++;
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}
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+ return s;
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}
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/*
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* A comment.
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*/
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int main ()
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{
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printf("%d\n", f(15));
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return 0;
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}
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commit de4c48ae814792c02a49c4c3c0c757ae69c55f6a
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Author: Thomas Rast <trast@student.ethz.ch>
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Date: Thu Feb 28 10:44:48 2013 +0100
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initial
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diff --git a/a.c b/a.c
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--- /dev/null
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+++ b/a.c
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@@ -0,0 +3,18 @@
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+int f(int x)
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+{
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+ int s = 0;
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+ while (x) {
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+ x >>= 1;
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+ s++;
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+ }
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+}
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+
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+/*
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+ * A comment.
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+ */
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+
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+int main ()
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+{
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+ printf("%d\n", f(15));
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+ return 0;
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+}
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