[LTP] [PATCH 2/3] Add some checks for malloc() returning NULL

[Tomas Dzik]

Current code in directory testcases/misc/math/float/ does not check
if malloc() returns NULL. Because it was contributing factor to observed
core dump I am adding these checks to make debugging failures easier.

Signed-off-by: Tomas Dzik <tdzik@redhat.com>
---
 testcases/misc/math/float/exp_log/genexp_log.c | 3 +++
 testcases/misc/math/float/iperb/geniperb.c     | 2 ++
 testcases/misc/math/float/power/genpower.c     | 3 +++
 testcases/misc/math/float/trigo/gentrigo.c     | 3 +++
 4 files changed, 11 insertions(+)

diff --git a/testcases/misc/math/float/exp_log/genexp_log.c b/testcases/misc/math/float/exp_log/genexp_log.c
index 7f26945ec..e02d0d344 100644
--- a/testcases/misc/math/float/exp_log/genexp_log.c
+++ b/testcases/misc/math/float/exp_log/genexp_log.c
@@ -30,6 +30,7 @@
 #include 	<stdlib.h>
 #include 	<string.h>
 #include 	<errno.h>
+#include	<err.h>
 #include        <limits.h>
 #include        <unistd.h>
 #include        <fcntl.h>
@@ -76,6 +77,8 @@ int main(int argc, char *argv[])
 	bin_path = argv[1];
 
 	funct = malloc(strlen(bin_path) + MAX_FNAME_LEN);
+	if (funct == NULL)
+		err(1, "malloc failed");
 	sprintf(funct, "%s/genexp", bin_path);
 	child = create_file(funct, 0);
 	waitpid(child, NULL, 0);
diff --git a/testcases/misc/math/float/iperb/geniperb.c b/testcases/misc/math/float/iperb/geniperb.c
index f7bf55c84..98a6a380a 100644
--- a/testcases/misc/math/float/iperb/geniperb.c
+++ b/testcases/misc/math/float/iperb/geniperb.c
@@ -78,6 +78,8 @@ int main(int argc, char *argv[])
 	bin_path = argv[1];
 
 	funct = malloc(strlen(bin_path) + MAX_FNAME_LEN);
+	if (funct == NULL)
+		err(1, "malloc failed");
 	sprintf(funct, "%s/gencosh", bin_path);
 	child = create_file(funct, 0);
 	waitpid(child, NULL, 0);
diff --git a/testcases/misc/math/float/power/genpower.c b/testcases/misc/math/float/power/genpower.c
index 44f7af934..8a8f753a7 100644
--- a/testcases/misc/math/float/power/genpower.c
+++ b/testcases/misc/math/float/power/genpower.c
@@ -34,6 +34,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <err.h>
 #include <sys/signal.h>
 #include <math.h>
 
@@ -76,6 +77,8 @@ int main(int argc, char *argv[])
 	bin_path = argv[1];
 
 	funct = malloc(strlen(bin_path) + MAX_FNAME_LEN);
+	if (funct == NULL)
+		err(1, "malloc failed");
 	sprintf(funct, "%s/genceil", bin_path);
 	child = create_file(funct, 0);
 	waitpid(child, NULL, 0);
diff --git a/testcases/misc/math/float/trigo/gentrigo.c b/testcases/misc/math/float/trigo/gentrigo.c
index 5f7e0cbc7..4908d0435 100644
--- a/testcases/misc/math/float/trigo/gentrigo.c
+++ b/testcases/misc/math/float/trigo/gentrigo.c
@@ -34,6 +34,7 @@
 #include        <unistd.h>
 #include        <fcntl.h>
 #include        <errno.h>
+#include	<err.h>
 #include        <sys/signal.h>
 #include        <math.h>
 
@@ -77,6 +78,8 @@ int main(int argc, char *argv[])
 	bin_path = argv[1];
 
 	funct = malloc(strlen(bin_path) + MAX_FNAME_LEN);
+	if (funct == NULL)
+		err(1, "malloc failed");
 	sprintf(funct, "%s/gencos", bin_path);
 	child = create_file(funct, 0);
 	waitpid(child, NULL, 0);
-- 
2.55.0