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reallocarray: check for ptrdiff_t overflow

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* doc/glibc-functions/reallocarray.texi (reallocarray):
Mention ptrdiff_t overflow.
* lib/reallocarray.c (reallocarray): Reindent as per usual GNU.
* lib/stdlib.in.h (reallocarray): Allow reallocarray to be replaced.
* m4/reallocarray.m4 (gl_FUNC_REALLOCARRAY):
Check for ptrdiff_t overflow.
* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Set up REPLACE_REALLOCARRAY.
* modules/reallocarray (Files): Add malloc.m4.
(configure.ac): Also test REPLACE_REALLOCARRAY.
* modules/reallocarray-tests (Depends-on): Add stdint.
* modules/stdlib (stdlib.h): Substitute REPLACE_REALLOCARRAY.
* tests/test-reallocarray.c: Include stdint.h.
(main): Check for ptrdiff_t overflow.
This commit is contained in:
Paul Eggert
2021-04-24 10:45:45 -07:00
parent e25cfaa3b5
commit a7477abe29
10 changed files with 69 additions and 25 deletions
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3
modules/reallocarray
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@@ -3,6 +3,7 @@ reallocarray function that is glibc compatible.
Files:
lib/reallocarray.c
m4/malloc.m4
m4/reallocarray.m4
Depends-on:
@@ -13,7 +14,7 @@ stdlib
configure.ac:
gl_FUNC_REALLOCARRAY
if test $HAVE_REALLOCARRAY = 0; then
if test $HAVE_REALLOCARRAY = 0 || test $REPLACE_REALLOCARRAY = 1; then
AC_LIBOBJ([reallocarray])
gl_PREREQ_REALLOCARRAY
fi