plan9port

commit e41871a7f002985778ff974832ca5b8bcabb2443
parent edbdfca9ae880879e0830f8eaf2a37abaeca4b54
Author: ssnf <ssnf@ssnf.xyz>
Date:   Thu, 31 Jul 2025 21:26:54 +0000

libvec: sysfatal on nil pointers

Diffstat:
M
src/libvec/Vecadd.c
 | 
4
++++
M
src/libvec/Vecdel.c
 | 
4
++++
M
src/libvec/Vecinit.c
 | 
6
++++++
M
src/libvec/Veczero.c
 | 
2
++

4 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/src/libvec/Vecadd.c b/src/libvec/Vecadd.c
@@ -7,6 +7,8 @@ Vecadd_(Type *p, ulong ms)
 {
 	Vector *v;
 
+	if (!p)
+		sysfatal("Vecadd: nil pointer");
 	Vecinsure_(p, ms, Vecsiz(*p) + 1);
 	v = Vec(*p);
 	if (v->init)
@@ -21,6 +23,8 @@ Vecinsure_(Type *p, ulong ms, ulong n)
 {
 	Vector *v;
 
+	if (!p)
+		sysfatal("Vecinsure: nil pointer");
 	v = Vec(*p);
 	if (v->size >= n)
 		return;
diff --git a/src/libvec/Vecdel.c b/src/libvec/Vecdel.c
@@ -8,9 +8,13 @@ Vecdel_(Type *p, ulong ms, ulong n)
 	Vector *v;
 	char *q;
 
+	if (!p)
+		sysfatal("Vecdel: nil pointer");
 	v = Vec(*p);
 	if (!v->n)
 		return;
+	if (n >= v->n)
+		sysfatal("Vecdel: out of bounds");
 	q = (char*)*p + n * ms;
 	if (v->close)
 		v->close(q);
diff --git a/src/libvec/Vecinit.c b/src/libvec/Vecinit.c
@@ -5,6 +5,8 @@
 Vector*
 Vec(Type p)
 {
+	if (!p)
+		sysfatal("Vec: nil pointer");
 	return (Vector*)p - 1;
 }
 
@@ -13,6 +15,8 @@ Vecinit_(Type *p, ulong ms, void (*init)(), void (*close)())
 {
 	Vector *v;
 
+	if (!p)
+		sysfatal("Vecinit: nil pointer");
 	v = malloc(sizeof(*v));
 	if (!v)
 		sysfatal("libvec vec.c:malloc(): %r");
@@ -28,6 +32,8 @@ Vecclose_(Type *p, ulong ms)
 {
 	Vector *v;
 
+	if (!p)
+		sysfatal("Vecclose: nil pointer");
 	v = Vec(*p);
 	if (v->close)
 		for (;v->n;)
diff --git a/src/libvec/Veczero.c b/src/libvec/Veczero.c
@@ -8,6 +8,8 @@ Veczero_(Type *p, ulong ms)
 {
 	Vector *v;
 
+	if (!p)
+		sysfatal("Veczero: nil pointer");
 	v = Vec(*p);
 	if (v->close != NULL)
 		for (;v->n;)