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-rw-r--r--debian/patches/bash52-004.diff63
1 files changed, 63 insertions, 0 deletions
diff --git a/debian/patches/bash52-004.diff b/debian/patches/bash52-004.diff
new file mode 100644
index 0000000..4309e61
--- /dev/null
+++ b/debian/patches/bash52-004.diff
@@ -0,0 +1,63 @@
+ BASH PATCH REPORT
+ =================
+
+Bash-Release: 5.2
+Patch-ID: bash52-004
+
+Bug-Reported-by: Antoine <bug-bash@glitchimini.net>
+Bug-Reference-ID: <8bd59753-05ff-9b09-2337-2c7f52ded650@glitchimini.net>
+Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-bash/2022-10/msg00022.html
+
+Bug-Description:
+
+Bash needs to keep better track of nested brace expansions to avoid problems
+with quoting and POSIX semantics.
+
+--- a/patchlevel.h
++++ b/patchlevel.h
+@@ -25,6 +25,6 @@
+ regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh
+ looks for to find the patch level (for the sccs version string). */
+
+-#define PATCHLEVEL 3
++#define PATCHLEVEL 4
+
+ #endif /* _PATCHLEVEL_H_ */
+--- a/subst.c
++++ b/subst.c
+@@ -1798,6 +1798,9 @@ extract_heredoc_dolbrace_string (string,
+ return (result);
+ }
+
++#define PARAMEXPNEST_MAX 32 // for now
++static int dbstate[PARAMEXPNEST_MAX];
++
+ /* Extract a parameter expansion expression within ${ and } from STRING.
+ Obey the Posix.2 rules for finding the ending `}': count braces while
+ skipping over enclosed quoted strings and command substitutions.
+@@ -1828,6 +1831,8 @@ extract_dollar_brace_string (string, sin
+ if (quoted == Q_HERE_DOCUMENT && dolbrace_state == DOLBRACE_QUOTE && (flags & SX_NOALLOC) == 0)
+ return (extract_heredoc_dolbrace_string (string, sindex, quoted, flags));
+
++ dbstate[0] = dolbrace_state;
++
+ pass_character = 0;
+ nesting_level = 1;
+ slen = strlen (string + *sindex) + *sindex;
+@@ -1852,6 +1857,8 @@ extract_dollar_brace_string (string, sin
+
+ if (string[i] == '$' && string[i+1] == LBRACE)
+ {
++ if (nesting_level < PARAMEXPNEST_MAX)
++ dbstate[nesting_level] = dolbrace_state;
+ nesting_level++;
+ i += 2;
+ if (dolbrace_state == DOLBRACE_QUOTE || dolbrace_state == DOLBRACE_WORD)
+@@ -1864,6 +1871,7 @@ extract_dollar_brace_string (string, sin
+ nesting_level--;
+ if (nesting_level == 0)
+ break;
++ dolbrace_state = (nesting_level < PARAMEXPNEST_MAX) ? dbstate[nesting_level] : dbstate[0]; /* Guess using initial state */
+ i++;
+ continue;
+ }