libsheepy

commit d87a7c2c90bfc67eae0cdd59614dbdca99b04200
parent d1da7a37b447c6730ca95e18aaf78e9a0bdbd110
Author: Remy Noulin <loader2x@gmail.com>
Date:   Fri,  4 Apr 2025 21:32:39 +0200

fix issue when duplicating btt buffers with len 0, the alloc size was 0 and when alloc is 0, it means readonly buffer. Alloc size is 4 when len is 0

release/libsheepy.h   | 2 +-
release/libsheepyBt.c | 6 +++---
release/libsheepyBt.h | 2 ++
src/libsheepy.h       | 2 +-
src/libsheepyBt.c     | 6 +++---
src/libsheepyBt.h     | 2 ++
6 files changed, 12 insertions(+), 8 deletions(-)

Diffstat:
M
release/libsheepy.h
 | 
2
+-
M
release/libsheepyBt.c
 | 
6
+++---
M
release/libsheepyBt.h
 | 
2
++
M
src/libsheepy.h
 | 
2
+-
M
src/libsheepyBt.c
 | 
6
+++---
M
src/libsheepyBt.h
 | 
2
++

6 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/release/libsheepy.h b/release/libsheepy.h
@@ -98,7 +98,7 @@
 
 // version accoring to the version package: Release.Major.minor.patch
 // https://noulin.net/version/file/README.md.html
-#define LIBSHEEPY_VERSION "2.2.18"
+#define LIBSHEEPY_VERSION "2.2.18.1"
 
 #ifndef SH_PREFIX
 #define SH_PREFIX(NAME) NAME
diff --git a/release/libsheepyBt.c b/release/libsheepyBt.c
@@ -47,7 +47,7 @@ btt initB(void *buf, u32 len, bool allocated) {
  */
 btt newB(u32 allocateSize) {
   btt r    = {.len = 0};
-  r.b     = malloc(allocateSize);
+  r.b     = malloc(allocateSize ? allocateSize : 4/*allocate 4 bytes when len is 0*/);
   if (!r.b) ret emptybt;
   r.alloc = allocateSize;
   ret r;
@@ -58,7 +58,7 @@ btt newB(u32 allocateSize) {
  */
 btt *allocNewB(u32 allocateSize) {
   btt *r = malloc(sizeof(*r));
-  *r    = newB(allocateSize);
+  *r    = newB(allocateSize ? allocateSize : 4/*allocate 4 bytes when len is 0*/);
   ret r;
 }
 
@@ -140,7 +140,7 @@ btt *allocPB(const btt *b) {
 btt copyB(const btt b) {
   btt r    = b;
   r.b     = malloc(b.len);
-  r.alloc = b.len;
+  r.alloc = b.len ? b.len : 4 /*allocate 4 bytes when len is 0*/;
   memcpy(r.b, b.b, b.len);
   ret r;
 }
diff --git a/release/libsheepyBt.h b/release/libsheepyBt.h
@@ -24,6 +24,8 @@
  *   u32 alloc;
  * } btt;
  * ```
+ * when b is on the heap (even len 0), alloc is above 0
+ *
  * The btt structure is managed by the *B functions.
  * The *B (not b*B) functions don't modify the first btt parameter.
  * The functions named b*B modify the first bbt pointer parameter and return a btt pointer.
diff --git a/src/libsheepy.h b/src/libsheepy.h
@@ -98,7 +98,7 @@
 
 // version accoring to the version package: Release.Major.minor.patch
 // https://noulin.net/version/file/README.md.html
-#define LIBSHEEPY_VERSION "2.2.18"
+#define LIBSHEEPY_VERSION "2.2.18.1"
 
 #ifndef SH_PREFIX
 #define SH_PREFIX(NAME) NAME
diff --git a/src/libsheepyBt.c b/src/libsheepyBt.c
@@ -47,7 +47,7 @@ btt initB(void *buf, u32 len, bool allocated) {
  */
 btt newB(u32 allocateSize) {
   btt r    = {.len = 0};
-  r.b     = malloc(allocateSize);
+  r.b     = malloc(allocateSize ? allocateSize : 4/*allocate 4 bytes when len is 0*/);
   if (!r.b) ret emptybt;
   r.alloc = allocateSize;
   ret r;
@@ -58,7 +58,7 @@ btt newB(u32 allocateSize) {
  */
 btt *allocNewB(u32 allocateSize) {
   btt *r = malloc(sizeof(*r));
-  *r    = newB(allocateSize);
+  *r    = newB(allocateSize ? allocateSize : 4/*allocate 4 bytes when len is 0*/);
   ret r;
 }
 
@@ -140,7 +140,7 @@ btt *allocPB(const btt *b) {
 btt copyB(const btt b) {
   btt r    = b;
   r.b     = malloc(b.len);
-  r.alloc = b.len;
+  r.alloc = b.len ? b.len : 4 /*allocate 4 bytes when len is 0*/;
   memcpy(r.b, b.b, b.len);
   ret r;
 }
diff --git a/src/libsheepyBt.h b/src/libsheepyBt.h
@@ -24,6 +24,8 @@
  *   u32 alloc;
  * } btt;
  * ```
+ * when b is on the heap (even len 0), alloc is above 0
+ *
  * The btt structure is managed by the *B functions.
  * The *B (not b*B) functions don't modify the first btt parameter.
  * The functions named b*B modify the first bbt pointer parameter and return a btt pointer.