From 00add29283170ea81e0e6631a33a38975fd898ea Mon Sep 17 00:00:00 2001
From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
Date: Mon, 9 Jul 2018 17:39:57 -0500
Subject: user/libexecinfo: pull in, overhaul entirely, add check

---
 user/libexecinfo/10-execinfo.patch | 64 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 user/libexecinfo/10-execinfo.patch

(limited to 'user/libexecinfo/10-execinfo.patch')

diff --git a/user/libexecinfo/10-execinfo.patch b/user/libexecinfo/10-execinfo.patch
new file mode 100644
index 000000000..97bd8cd5d
--- /dev/null
+++ b/user/libexecinfo/10-execinfo.patch
@@ -0,0 +1,64 @@
+--- a/execinfo.c
++++ b/execinfo.c
+@@ -69,7 +69,8 @@
+ char **
+ backtrace_symbols(void *const *buffer, int size)
+ {
+-    int i, clen, alen, offset;
++    size_t clen, alen;
++    int i, offset;
+     char **rval;
+     char *cp;
+     Dl_info info;
+@@ -78,7 +79,6 @@
+     rval = malloc(clen);
+     if (rval == NULL)
+         return NULL;
+-    (char **)cp = &(rval[size]);
+     for (i = 0; i < size; i++) {
+         if (dladdr(buffer[i], &info) != 0) {
+             if (info.dli_sname == NULL)
+@@ -92,14 +92,14 @@
+                    2 +                      /* " <" */
+                    strlen(info.dli_sname) + /* "function" */
+                    1 +                      /* "+" */
+-                   D10(offset) +            /* "offset */
++                   10 +                     /* "offset */
+                    5 +                      /* "> at " */
+                    strlen(info.dli_fname) + /* "filename" */
+                    1;                       /* "\0" */
+             rval = realloc_safe(rval, clen + alen);
+             if (rval == NULL)
+                 return NULL;
+-            snprintf(cp, alen, "%p <%s+%d> at %s",
++            snprintf((char *) rval + clen, alen, "%p <%s+%d> at %s",
+               buffer[i], info.dli_sname, offset, info.dli_fname);
+         } else {
+             alen = 2 +                      /* "0x" */
+@@ -108,12 +108,15 @@
+             rval = realloc_safe(rval, clen + alen);
+             if (rval == NULL)
+                 return NULL;
+-            snprintf(cp, alen, "%p", buffer[i]);
++            snprintf((char *) rval + clen, alen, "%p", buffer[i]);
+         }
+-        rval[i] = cp;
+-        cp += alen;
++        rval[i] = (char *) clen;
++        clen += alen;
+     }
+ 
++    for (i = 0; i < size; i++)
++        rval[i] += (long) rval;
++
+     return rval;
+ }
+ 
+@@ -155,6 +158,6 @@
+                 return;
+             snprintf(buf, len, "%p\n", buffer[i]);
+         }
+-        write(fd, buf, len - 1);
++        write(fd, buf, strlen(buf));
+     }
+ }
-- 
cgit v1.2.3-60-g2f50