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authorRob Landley <rob@landley.net>2015-10-29 01:30:58 -0500
committerRob Landley <rob@landley.net>2015-10-29 01:30:58 -0500
commit8132ad2f4ec9b463ed954a302e9e490b549b106a (patch)
tree66f7647b93f7245c8ad9f4dc03d298a4444f45d6 /toys
parentda646636382e5830650e725592d10cec587081f7 (diff)
downloadtoybox-8132ad2f4ec9b463ed954a302e9e490b549b106a.tar.gz
Fix sed bug reported by Isabella Parakiss, where sed -e "/x/c\" -e "y" added
an extra newline because the test for whether we have an existing string to append a newline to was checking if struct step had data appended to it, and the /x/ regex is data appended to it. Change test to check for null terminator at ->arg1 offset.
Diffstat (limited to 'toys')
-rw-r--r--toys/posix/sed.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/toys/posix/sed.c b/toys/posix/sed.c
index 20975320..9d377cdb 100644
--- a/toys/posix/sed.c
+++ b/toys/posix/sed.c
@@ -260,7 +260,7 @@ static char *extend_string(char **old, char *new, int oldlen, int newlen)
}
// An empty regex repeats the previous one
-void *get_regex(void *trump, int offset)
+static void *get_regex(void *trump, int offset)
{
if (!offset) {
if (!TT.lastregex) error_exit("no previous regex");
@@ -669,6 +669,7 @@ static void do_lines(int fd, char *name, void (*call)(char **pline, long len))
if (fd) fclose(fp);
}
+// Callback called on each input file
static void do_sed(int fd, char *name)
{
int i = toys.optflags & FLAG_i;
@@ -677,7 +678,7 @@ static void do_sed(int fd, char *name)
if (i) {
struct step *primal;
- if (!fd && *name=='-') {
+ if (!fd && !strcmp(name, "-")) {
error_msg("-i on stdin");
return;
}
@@ -970,7 +971,7 @@ resume_a:
// pointers so realloc() moving stuff doesn't break things. Ok to write
// \n over NUL terminator because call to extend_string() adds it back.
if (!corwin->arg1) corwin->arg1 = reg - (char*)corwin;
- else if ((corwin+1) != (void *)reg) *(reg++) = '\n';
+ else if (*(corwin->arg1+(char *)corwin)) *(reg++) = '\n';
reg = extend_string((void *)&corwin, line, reg - (char *)corwin, end);
// Recopy data to remove escape sequences and handle line continuation.