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From c51b63758e95247e3c1e2f06e5f5bfb49849e66d Mon Sep 17 00:00:00 2001
From: Robert Yang <liezhi.yang@windriver.com>
Date: Tue, 22 Jan 2019 16:30:52 +0800
Subject: [PATCH] Fix Segmentation fault error when gcc -o /dev/null
Fixed:
$ export CCACHE_DEBUG=1
$ ccache gcc -c hello.c -o /dev/null
Segmentation fault (core dumped)
This is because failed to open /dev/null.foo (Permission denied), check file
stream before write to it can fix the problem.
Upstream-Status: Backport [https://github.com/ccache/ccache/commit/4d86e884d07ba1853a0c70507cc4d04107f57c29]
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---
src/ccache.c | 15 ++++++++++++---
src/util.c | 8 ++++++--
2 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/src/ccache.c b/src/ccache.c
index b4cdb86..8c227df 100644
--- a/src/ccache.c
+++ b/src/ccache.c
@@ -521,9 +521,13 @@ init_hash_debug(struct hash *hash, const char *obj_path, char type,
char *path = format("%s.ccache-input-%c", obj_path, type);
FILE *debug_binary_file = fopen(path, "wb");
- hash_enable_debug(hash, section_name, debug_binary_file, debug_text_file);
+ if (debug_binary_file) {
+ hash_enable_debug(hash, section_name, debug_binary_file, debug_text_file);
+ exitfn_add(fclose_exitfn, debug_binary_file);
+ } else {
+ cc_log("Failed to open %s: %s", path, strerror(errno));
+ }
free(path);
- exitfn_add(fclose_exitfn, debug_binary_file);
}
static enum guessed_compiler
@@ -3670,8 +3674,13 @@ ccache(int argc, char *argv[])
if (conf->debug) {
char *path = format("%s.ccache-input-text", output_obj);
debug_text_file = fopen(path, "w");
+ if (debug_text_file) {
+ exitfn_add(fclose_exitfn, debug_text_file);
+ }
+ else {
+ cc_log("Failed to open %s: %s", path, strerror(errno));
+ }
free(path);
- exitfn_add(fclose_exitfn, debug_text_file);
}
struct hash *common_hash = hash_init();
diff --git a/src/util.c b/src/util.c
index e442cc4..a49fb4c 100644
--- a/src/util.c
+++ b/src/util.c
@@ -219,8 +219,12 @@ void
cc_dump_log_buffer(const char *path)
{
FILE *file = fopen(path, "w");
- (void) fwrite(logbuffer, 1, logsize, file);
- fclose(file);
+ if (file) {
+ (void) fwrite(logbuffer, 1, logsize, file);
+ fclose(file);
+ } else {
+ cc_log("Failed to open %s: %s", path, strerror(errno));
+ }
}
// Something went badly wrong!
--
2.7.4
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