140 lines
5.5 KiB
Diff
140 lines
5.5 KiB
Diff
From 1d62df2df0b1b0fcb559247c5c7042f5e673a38b Mon Sep 17 00:00:00 2001
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From: q66 <daniel@octaforge.org>
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Date: Sat, 18 Apr 2020 19:02:35 +0200
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Subject: [PATCH] Revert "[SV 54161] Fix second expansion of $* for paths"
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This reverts commit 86f2f8bcb5b4a03da8eb37e9a99c22d8fec4bfb2.
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This commit breaks secondary expansion in builds of aegisub at very least,
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revert to previous behavior for the time being while this is investigated.
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---
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src/implicit.c | 56 +++++++++---------------------
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tests/scripts/features/se_implicit | 8 -----
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2 files changed, 17 insertions(+), 47 deletions(-)
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diff --git a/src/implicit.c b/src/implicit.c
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index b281a17..4d0a01f 100644
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--- a/src/implicit.c
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+++ b/src/implicit.c
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@@ -221,9 +221,8 @@ pattern_search (struct file *file, int archive,
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struct patdeps *deplist = xmalloc (max_deps * sizeof (struct patdeps));
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struct patdeps *pat = deplist;
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- /* Names of possible dependencies are constructed in this buffer.
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- We may replace % by $(*F) for second expansion, increasing the length. */
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- char *depname = alloca (namelen + max_pattern_dep_length + 4);
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+ /* Names of possible dependencies are constructed in this buffer. */
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+ char *depname = alloca (namelen + max_pattern_dep_length);
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/* The start and length of the stem of FILENAME for the current rule. */
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const char *stem = 0;
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@@ -479,10 +478,9 @@ pattern_search (struct file *file, int archive,
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}
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}
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- if (stemlen + (check_lastslash ? pathlen : 0) > GET_PATH_MAX)
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+ if (stemlen > GET_PATH_MAX)
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{
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- DBS (DB_IMPLICIT, (_("Stem too long: '%s%.*s'.\n"),
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- check_lastslash ? pathdir : "",
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+ DBS (DB_IMPLICIT, (_("Stem too long: '%.*s'.\n"),
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(int) stemlen, stem));
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continue;
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}
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@@ -490,19 +488,8 @@ pattern_search (struct file *file, int archive,
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DBS (DB_IMPLICIT, (_("Trying pattern rule with stem '%.*s'.\n"),
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(int) stemlen, stem));
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- if (!check_lastslash)
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- {
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- memcpy (stem_str, stem, stemlen);
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- stem_str[stemlen] = '\0';
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- }
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- else
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- {
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- /* We want to prepend the directory from
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- the original FILENAME onto the stem. */
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- memcpy (stem_str, filename, pathlen);
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- memcpy (stem_str + pathlen, stem, stemlen);
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- stem_str[pathlen + stemlen] = '\0';
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- }
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+ strncpy (stem_str, stem, stemlen);
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+ stem_str[stemlen] = '\0';
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/* If there are no prerequisites, then this rule matches. */
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if (rule->deps == 0)
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@@ -553,7 +540,7 @@ pattern_search (struct file *file, int archive,
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}
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memcpy (o, nptr, p - nptr);
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o += p - nptr;
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- memcpy (o, stem, stemlen);
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+ memcpy (o, stem_str, stemlen);
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o += stemlen;
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strcpy (o, p + 1);
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}
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@@ -605,10 +592,10 @@ pattern_search (struct file *file, int archive,
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again. This is not good if you have certain characters
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in your stem (like $).
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- Instead, we will replace % with $* or $(*F) and allow the
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- second expansion to take care of it for us. This way
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- (since $* and $(*F) are simple variables) there won't be
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- additional re-expansion of the stem. */
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+ Instead, we will replace % with $* and allow the second
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+ expansion to take care of it for us. This way (since $*
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+ is a simple variable) there won't be additional
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+ re-expansion of the stem. */
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p = lindex (nptr, nptr + len, '%');
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if (p == 0)
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@@ -619,22 +606,13 @@ pattern_search (struct file *file, int archive,
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else
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{
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size_t i = p - nptr;
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- char *o = depname;
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- memcpy (o, nptr, i);
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- o += i;
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+ memcpy (depname, nptr, i);
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+ memcpy (depname + i, "$*", 2);
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+ memcpy (depname + i + 2, p + 1, len - i - 1);
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+ depname[len + 2 - 1] = '\0';
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+
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if (check_lastslash)
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- {
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- add_dir = 1;
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- memcpy (o, "$(*F)", 5);
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- o += 5;
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- }
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- else
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- {
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- memcpy (o, "$*", 2);
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- o += 2;
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- }
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- memcpy (o, p + 1, len - i - 1);
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- o[len - i - 1] = '\0';
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+ add_dir = 1;
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}
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/* Set up for the next word. */
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diff --git a/tests/scripts/features/se_implicit b/tests/scripts/features/se_implicit
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index 866d1fb..a01b385 100644
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--- a/tests/scripts/features/se_implicit
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+++ b/tests/scripts/features/se_implicit
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@@ -254,13 +254,5 @@ foo: $$(info $$<)
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!,
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'', "bar\n#MAKE#: Nothing to be done for 'foo'.\n");
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-# SV 54161: Expand $$* properly when it contains a path
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-
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-run_make_test(q!
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-.SECONDEXPANSION:
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-%x: $$(info $$*); @echo '$*'
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-!,
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- 'q/ux', "q/u\nq/u\n");
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-
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# This tells the test driver that the perl test script executed properly.
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1;
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--
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2.26.1
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