Hi,
A quick and easy way would be to instrument getenv(), unsetenv() and
setenv(), which would trigger an error. Something like this (but you
will have to put in a few "extern called_getenv; called_getenv = 0;",
since already a simple git-init fails because of setup_path()):
-- snipsnap --
[PATCH] Instrument getenv(), setenv(), unsetenv() and putenv()
... for finding places where a pointer obtained by getenv() could
be invalidated later.
---
environment.c | 1 +
git-compat-util.h | 31 +++++++++++++++++++++++++++++++
2 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/environment.c b/environment.c
index ce75e98..027340e 100644
--- a/environment.c
+++ b/environment.c
@@ -9,6 +9,7 @@
*/
#include "cache.h"
+int called_setenv, called_getenv;
char git_default_email[MAX_GITNAME];
char git_default_name[MAX_GITNAME];
int trust_executable_bit = 1;
diff --git a/git-compat-util.h b/git-compat-util.h
index 79eb10e..a41469b 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -427,4 +427,35 @@ static inline int strtol_i(char const *s, int base, int *result)
return 0;
}
+extern int called_setenv, called_getenv;
+static inline char *test_getenv(const char *name)
+{
+ if (!called_setenv)
+ warning ("called test_getenv %s", name);
+ called_getenv = 1;
+ return getenv(name);
+}
+static inline int test_setenv(const char *name, const char *value, int overwrite)
+{
+ if (!called_setenv && called_getenv)
+ die ("getenv was called before setenv(%s, %s, %d)",
+ name, value, overwrite);
+ return setenv(name, value, overwrite);
+}
+static inline int test_unsetenv(const char *name)
+{
+ if (!called_setenv && called_getenv)
+ die ("getenv was called before unsetenv(%s)", name);
+ return unsetenv(name);
+}
+static inline int test_putenv(char *string)
+{
+ if (!called_setenv && called_getenv)
+ die ("getenv was called before putenv(%s)", string);
+ return putenv(string);
+}
+#define getenv test_getenv
+#define ...
